RE: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

It's worth it Mike... super well made out of best parts.

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

$100 a piece. That's just enough for raw materials per piece (boards and
all new components from digikey).

On Mon, Dec 30, 2019, 10:34 AM Michail Wilson  wrote:

> I am considering getting one.
>
>
>
> What is the price you’re selling them at?
>
>
>
> Michail Wilson
>
> 206-920-6312
>
>
>
> *From:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] *On
> Behalf Of *Kevin A.
> *Sent:* Sunday, December 29, 2019 11:45 PM
> *To:* neonixie-l
> *Subject:* Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
>
>
>
> Gentlemen,
>
>
>
> It's been a while; since organizing the lab I have 3 power supplies left
> from my original production run. I've decided to sell them at material
> cost. If you need lots of high voltage you can check it out here:
> https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/
>
>
>
> On Thu, Nov 28, 2019, 9:29 PM Bill Notfaded  wrote:
>
> I also highly recommend the Hoefer Scientific DC Power Supply PS500XT.  I
> bought a second one they sit nicely next to each other.  I also was
> thinking like you that this power supply would be great for a long array of
> B-7971 smartsockets... 8, 10, 12. It's nice to use one power supply instead
> of a bunch of Taylor ones.
>
> Bill
>
> --
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RE: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Michail Wilson]

I am considering getting one.

 

What is the price you’re selling them at?

 

Michail Wilson

206-920-6312

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Kevin A.
Sent: Sunday, December 29, 2019 11:45 PM
To: neonixie-l
Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

 

Gentlemen, 

 

It's been a while; since organizing the lab I have 3 power supplies left from 
my original production run. I've decided to sell them at material cost. If you 
need lots of high voltage you can check it out here:  
https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/

 

On Thu, Nov 28, 2019, 9:29 PM Bill Notfaded  wrote:

I also highly recommend the Hoefer Scientific DC Power Supply PS500XT.  I 
bought a second one they sit nicely next to each other.  I also was thinking 
like you that this power supply would be great for a long array of B-7971 
smartsockets... 8, 10, 12. It's nice to use one power supply instead of a bunch 
of Taylor ones.

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Gentlemen,

It's been a while; since organizing the lab I have 3 power supplies left
from my original production run. I've decided to sell them at material
cost. If you need lots of high voltage you can check it out here:
https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/

On Thu, Nov 28, 2019, 9:29 PM Bill Notfaded  wrote:

> I also highly recommend the Hoefer Scientific DC Power Supply PS500XT.  I
> bought a second one they sit nicely next to each other.  I also was
> thinking like you that this power supply would be great for a long array of
> B-7971 smartsockets... 8, 10, 12. It's nice to use one power supply instead
> of a bunch of Taylor ones.
>
> Bill
>
> --
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> .
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

I also highly recommend the Hoefer Scientific DC Power Supply PS500XT.  I 
bought a second one they sit nicely next to each other.  I also was thinking 
like you that this power supply would be great for a long array of B-7971 
smartsockets... 8, 10, 12. It's nice to use one power supply instead of a bunch 
of Taylor ones.

Bill

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

I know I should really do that, even if I don't use it that much it would 
add a certain weight to my project photo shots!
In this case it would have saved me several hours of frustration - worth it 
for that alone.
I shall source one from either the bay or AliExpress or similar. If you 
have any recommendations or products to avoid I'd be keen to know.

On Thursday, 28 November 2019 12:37:43 UTC, Paul Andrews wrote:
>
> Richard, I strongly recommend you get yourself a bench power supply. That 
> would show you the current being drawn by your devices. They are around $60 
> on eBay.
>
> I also recommend one of these bad boys for producing HV for your bench: 
> Hoefer Scientific DC Power Supply PS500XT
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Paul Andrews]

Richard, I strongly recommend you get yourself a bench power supply. That would 
show you the current being drawn by your devices. They are around $60 on eBay.

I also recommend one of these bad boys for producing HV for your bench: Hoefer 
Scientific DC Power Supply PS500XT

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Thrilled to hear that you got the setup running proper! I'm sure this
experience will prove useful for future projects.

Enjoy!

On Wed, Nov 27, 2019 at 4:05 PM Richard Scales 
wrote:

> I have just spent a couple of hours with a colleague going through the
> issues that I was experiencing with the HV Supply. There was the data
> corruption and more recently - once I had added the last four out of 10
> tubes, the HV would start and then instantly go 'off' only to come back on
> some 10 seconds (or more) later.
>
> The data corruption issue was exactly as foretold - ground returns. I
> added a ground return for the data signal from the micros which had an
> immediate effect, no corruption. I will almost certainly add another for
> the 170V ground return for completeness.
>
> The other issue, after much scratching of heads, was resolved when some
> rough calculations took place, causing me to check the 12V power adapter
> that I had been using - 12V 1000ma - Doh!
>
> I moved to using a spare output on a much larger 12V supply that I am
> using to drive multiple clocks and immediate success was obtained there too.
>
> So, now I have the proper supply, connected to a proper supply and it's
> all lovely.
>
> Thank you Kevin and everyone else who provided pointers. I have learnt a
> lot during this process, hopefully I will remember some of it when I get to
> use the second of the two HV supplies!
>
> Top marks, excellent product, excellent support, thanks again.
>
> Richard
>
>
> On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>>
>> Just wanted to share a nixie related project I've been working on for a
>> few weeks now. I've got the boards ordered for my latest revision. Looking
>> for any feedback and to see if this interests anyone.
>>
>>
>> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>>
>> Since I got into nixies, I've found that good high voltage power supplies
>> are a major asset to any successful design. Instead of relying on Chinese
>> eBay stuff or other unsustainable sources, I wanted to build my own using
>> the latest in boost controllers and high power semiconductors in addition
>> to using the highest quality, brand name components in the actual
>> construction the supply. It's not a design built down to the lowest cost
>> but one built for silent, reliable, and continuous low-ripple operation at
>> rated power.
>>
>> This will be made open source once I've matured it to a reasonable
>> degree. I hope that the latest revision will prove satisfactory.
>>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

garbage in = garbage out

One of the best things I learned in chemistry also applies to electrical
circuits and in computer science!

I'm glad you figured it out.  That's one place I would have started but it
was a great learning experience and we all like to help out.  I'm sure I
could have done something similar... sometimes it's hard to see the forest
for the trees!

Also I still I'm tripping out this was on mailbag on EEVBlog!!!

Bill

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

I have just spent a couple of hours with a colleague going through the 
issues that I was experiencing with the HV Supply. There was the data 
corruption and more recently - once I had added the last four out of 10 
tubes, the HV would start and then instantly go 'off' only to come back on 
some 10 seconds (or more) later.

The data corruption issue was exactly as foretold - ground returns. I added 
a ground return for the data signal from the micros which had an immediate 
effect, no corruption. I will almost certainly add another for the 170V 
ground return for completeness.

The other issue, after much scratching of heads, was resolved when some 
rough calculations took place, causing me to check the 12V power adapter 
that I had been using - 12V 1000ma - Doh!

I moved to using a spare output on a much larger 12V supply that I am using 
to drive multiple clocks and immediate success was obtained there too.

So, now I have the proper supply, connected to a proper supply and it's all 
lovely.

Thank you Kevin and everyone else who provided pointers. I have learnt a 
lot during this process, hopefully I will remember some of it when I get to 
use the second of the two HV supplies!

Top marks, excellent product, excellent support, thanks again.

Richard


On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>
> Just wanted to share a nixie related project I've been working on for a 
> few weeks now. I've got the boards ordered for my latest revision. Looking 
> for any feedback and to see if this interests anyone. 
>
>
> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>
> Since I got into nixies, I've found that good high voltage power supplies 
> are a major asset to any successful design. Instead of relying on Chinese 
> eBay stuff or other unsustainable sources, I wanted to build my own using 
> the latest in boost controllers and high power semiconductors in addition 
> to using the highest quality, brand name components in the actual 
> construction the supply. It's not a design built down to the lowest cost 
> but one built for silent, reliable, and continuous low-ripple operation at 
> rated power. 
>
> This will be made open source once I've matured it to a reasonable degree. 
> I hope that the latest revision will prove satisfactory. 
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

I suggest to try tying the enable to ground so as to ensure that there is
no interference or unknown phenomenon along the enable which would cause
the HV to stop.

The HV will have to be connected to system ground to complete the circuit.
My thought is that by connecting the ground on the output side of the power
supply as close to the HV input as possible, this will provide a return
path of least resistance and keep switching noise along the HV current path
from trying to propagate through signal lines.

On Mon, Nov 25, 2019, 1:59 AM Richard Scales  wrote:

> That sounds promising, I note that in your suggested diagram you have also
> connected the HV enable to the same ground - was that in order to first
> resolve the glitches before moving on to using the HV control (which has
> worked fine thus far)?
> I can connect the HV output ground to the Smart Socket Array Ground, which
> is the same point as the 5V supply ground and Data signal ground - is that
> right?
> I am treading on uncertain ground here (absolutely no pun intended) -
> where rules of which I am unaware are coming in to play!
>
>
> On Sun, Nov 24, 2019 at 6:35 PM Kevin A. 
> wrote:
>
>> Richard,
>>
>> Looking at your schematic again, I realized that the High Voltage return
>> path was right along your signal ground from the SmartSockets. This is a
>> big red flag as far as grounding issues.
>>
>> I highlighted in purple the HV return path on your original schematic to
>> illustrate this. There is no doubt in my mind that this will cause problems
>> such as glitching in the smartsockets.
>>
>> Please try the wiring I have illustrated in the new schematic, also
>> attached.
>>
>> --
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>> 
>> .
>>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[gregebert]

If you have a digital scope, here are a few things to try:

1. In your controller, add a few lines of code to wiggle a spare I/O pin 
when the controller gets reset. Then use this to trigger your scope; if 
noise is causing your controller to restart, your scope will catch it. I've 
done this, and similar, on other designs to trigger my logic analyzer or 
dump a text-message to stdout.
2. If #1 above is what is happening, use a second scope channel to monitor 
potential aggressor signals, such as the power supply. It will be clear 
from the captured trace if a power glitch caused, or was the result-of, a 
restart.
3. If #1 is not happening, trigger your scope when the HV supply drops, for 
example negative-edge trigger at 130 volts. Then use the other channel(s) 
to probe power supplies, or signals to the smart-socket.


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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

That sounds promising, I note that in your suggested diagram you have also
connected the HV enable to the same ground - was that in order to first
resolve the glitches before moving on to using the HV control (which has
worked fine thus far)?
I can connect the HV output ground to the Smart Socket Array Ground, which
is the same point as the 5V supply ground and Data signal ground - is that
right?
I am treading on uncertain ground here (absolutely no pun intended) -
where rules of which I am unaware are coming in to play!


On Sun, Nov 24, 2019 at 6:35 PM Kevin A. 
wrote:

> Richard,
>
> Looking at your schematic again, I realized that the High Voltage return
> path was right along your signal ground from the SmartSockets. This is a
> big red flag as far as grounding issues.
>
> I highlighted in purple the HV return path on your original schematic to
> illustrate this. There is no doubt in my mind that this will cause problems
> such as glitching in the smartsockets.
>
> Please try the wiring I have illustrated in the new schematic, also
> attached.
>
> --
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Thers is certainly some usual interference between the power supply and the
driving electronics. For the time being, I would recommend leaving the
enable terminal unconnected from the controller. You can also tie a jumper
between the enable and ground terminal blocks to ensure that it is being
pulled down.

I start each power supply under a 200 milliamp load on the High Voltage
output and let it run for 4 hours without interruption, at 12 volts input.
It is impossible that the high voltage load is causing the power supply to
cut out and go into restart.

I'll need to really exhaust all the possibilities I can think of and get
back to you. Some consultation from my colleagues is in order too.

On Sun, Nov 24, 2019, 10:15 AM Richard Scales 
wrote:

> A quick lack of progress update - Having beefed up all cables I was still
> experiencing the corruption issue.
>
> In an effort to make some progress I decided to put that issue to one side
> and add the remaining 4 tubes to make the 10 tube display complete - I
> could then work on the display code a little - knowing (hoping) that the
> corruption issue might get resolved on day.
>
> I added the last 4 tubes and noticed that, on power up the HV supply would
> shut down (neon goes off) and then after what seemed an eternity (though
> most probably about 20 seconds) it would come back on. This was evidenced
> by the neon going off then on as well as the displays (most but not all of
> them) would light up.
>
> I measured the current being delivered at this point and it fluctuated
> between 12 and 18mA depending on the data being displayed.
>
> Crazy I thought. My expectations were that the HV supply would be up to
> delivering much more than that without difficulty.
>
> In a last minute desperate attempt to make some progress, I removed the HV
> supply and put the NCH6100HV back in its place.
>
> The thing powered up, all digits displayed, the clock runs and displays
> all required data and there was no corruption of data.
>
> Something about using your HV supply is causing something somewhere to
> misbehave.
>
> I have now run the clock on the NCH6100HV for an hour and all continues to
> work well. Yes, it gets a little warm but, if left alone, the HV is
> disabled unless there is any PIR action.
>
> In isolation, the supply appears to be fine. I have been running the thing
> from a 1.5A 12V plug top adapter.
>
> My issues only seem to have started since using the new HV supplies, where
> could I look next?
>
>
>
>
>
>
> On Saturday, 23 November 2019 06:10:09 UTC, Kevin A. wrote:
>>
>> Glad to hear you're making progress. Interesting that moving the HV psu
>> away before did not make a difference, but in the new position it did.
>> Something must have changed with your electrical connections as well which
>> resulted in that improvement.
>>
>> Grounding is crucial to signal integrity no matter the circuit. Keeping
>> the ground path as short as possible with large, low impedance connections
>> should definitely improve the situation.
>>
>> On Sat, Nov 23, 2019, 12:38 AM Richard Scales 
>> wrote:
>>
>>> I put the 7805 in place but it made no difference whatsoever. I decided
>>> to change the position of things so that the HV supply was at the 'other
>>> end' of the clock and the CPU's were at the end where the signal goes to
>>> the Smart Sockets. There seemed to be some improvement, at one point i
>>> thought it was completely fixed though staring at the thing periodically I
>>> could see that it was not not totally 'fixed'. Reading your comment about
>>> ground wires I will beef-up the 0v and 5v connections to the logic boards
>>> as they are indeed skinny at the moment.
>>>
>>> On Wednesday, 20 November 2019 16:59:26 UTC, Kevin A. wrote:

 Does it seem like the degree of glitching has been reduced, is the
 same, or worse with those 2 changes?

 An LM7805 could support your 5 volt rail depending on how you implement
 it. The higher the input voltage, the hotter it gets. If you can adjust
 your buck module to 8 volts, then put the 7805 after the buck module and
 see if that works. If your buck module will not go up to 8 volts, you could
 try using the 7805 directly from 12 to 5 volts if you're not pulling more
 than around 0.75 amps (power dissipation (heat) is increased because of the
 greater drop from 12 to 5 as opposed to 8 to 5).

 If that doesn't solve the problem then improving grounding is the next
 way to go. Ground paths ideally are short and use larger conductors. Having
 long, narrow ground wires strewn about may certainly be contributing to
 glitches from noise and undesirable ground loops.

 On Wed, Nov 20, 2019, 11:35 AM Richard Scales 
 wrote:

> I tried the first two suggestions and thought (initially) that all was
> good but upon watching in detail it would seem that it is the same.
>
> I have a L78M05 to hand - is that going to do the job?
>

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

A quick lack of progress update - Having beefed up all cables I was still 
experiencing the corruption issue.

In an effort to make some progress I decided to put that issue to one side 
and add the remaining 4 tubes to make the 10 tube display complete - I 
could then work on the display code a little - knowing (hoping) that the 
corruption issue might get resolved on day.

I added the last 4 tubes and noticed that, on power up the HV supply would 
shut down (neon goes off) and then after what seemed an eternity (though 
most probably about 20 seconds) it would come back on. This was evidenced 
by the neon going off then on as well as the displays (most but not all of 
them) would light up.

I measured the current being delivered at this point and it fluctuated 
between 12 and 18mA depending on the data being displayed.

Crazy I thought. My expectations were that the HV supply would be up to 
delivering much more than that without difficulty.

In a last minute desperate attempt to make some progress, I removed the HV 
supply and put the NCH6100HV back in its place.

The thing powered up, all digits displayed, the clock runs and displays all 
required data and there was no corruption of data.

Something about using your HV supply is causing something somewhere to 
misbehave. 

I have now run the clock on the NCH6100HV for an hour and all continues to 
work well. Yes, it gets a little warm but, if left alone, the HV is 
disabled unless there is any PIR action.

In isolation, the supply appears to be fine. I have been running the thing 
from a 1.5A 12V plug top adapter.

My issues only seem to have started since using the new HV supplies, where 
could I look next?






On Saturday, 23 November 2019 06:10:09 UTC, Kevin A. wrote:
>
> Glad to hear you're making progress. Interesting that moving the HV psu 
> away before did not make a difference, but in the new position it did. 
> Something must have changed with your electrical connections as well which 
> resulted in that improvement.   
>
> Grounding is crucial to signal integrity no matter the circuit. Keeping 
> the ground path as short as possible with large, low impedance connections 
> should definitely improve the situation. 
>
> On Sat, Nov 23, 2019, 12:38 AM Richard Scales  > wrote:
>
>> I put the 7805 in place but it made no difference whatsoever. I decided 
>> to change the position of things so that the HV supply was at the 'other 
>> end' of the clock and the CPU's were at the end where the signal goes to 
>> the Smart Sockets. There seemed to be some improvement, at one point i 
>> thought it was completely fixed though staring at the thing periodically I 
>> could see that it was not not totally 'fixed'. Reading your comment about 
>> ground wires I will beef-up the 0v and 5v connections to the logic boards 
>> as they are indeed skinny at the moment.
>>
>> On Wednesday, 20 November 2019 16:59:26 UTC, Kevin A. wrote:
>>>
>>> Does it seem like the degree of glitching has been reduced, is the same, 
>>> or worse with those 2 changes? 
>>>
>>> An LM7805 could support your 5 volt rail depending on how you implement 
>>> it. The higher the input voltage, the hotter it gets. If you can adjust 
>>> your buck module to 8 volts, then put the 7805 after the buck module and 
>>> see if that works. If your buck module will not go up to 8 volts, you could 
>>> try using the 7805 directly from 12 to 5 volts if you're not pulling more 
>>> than around 0.75 amps (power dissipation (heat) is increased because of the 
>>> greater drop from 12 to 5 as opposed to 8 to 5). 
>>>
>>> If that doesn't solve the problem then improving grounding is the next 
>>> way to go. Ground paths ideally are short and use larger conductors. Having 
>>> long, narrow ground wires strewn about may certainly be contributing to 
>>> glitches from noise and undesirable ground loops. 
>>>
>>> On Wed, Nov 20, 2019, 11:35 AM Richard Scales  
>>> wrote:
>>>
 I tried the first two suggestions and thought (initially) that all was 
 good but upon watching in detail it would seem that it is the same.

 I have a L78M05 to hand - is that going to do the job?

 Otherwise I can get something like this 
 https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ 
 very 
 quickly.



 On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:
>
> Here would be my first 2 suggestions in changes to your circuit:
>
> #1: I would definitely place the ground from my logic circuits 
> straight to the main power ground, instead of routing it though the 5V 
> buck 
> module. The buck converter is also a switching power supply and this 
> could 
> very well be coupling noise through the rest of your circuit, especially 
> if 
> it is the only ground path for the logic.
>
> #2: If #1 does not fully alleviate the problem, I would try placing an 
> electrolytic cap of between 100-470uF on 

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Paul Andrews]

Hmmm. Try changing the orientation of the HV board. Like either parallel to the 
chassis or perpendicular to it. I’m think magnetic flux lines. Transformer 
orientation is a big consideration in tube amplifiers.

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[H. Carl Ott]

Hi Richard,
 Could you go into some detail on how your "HV control" signal operates?

carl

Henry Carl Ott   N2RVQhcarl...@gmail.com


On Sat, Nov 23, 2019 at 1:10 AM Kevin A. 
wrote:

> Glad to hear you're making progress. Interesting that moving the HV psu
> away before did not make a difference, but in the new position it did.
> Something must have changed with your electrical connections as well which
> resulted in that improvement.
>
> Grounding is crucial to signal integrity no matter the circuit. Keeping
> the ground path as short as possible with large, low impedance connections
> should definitely improve the situation.
>
> On Sat, Nov 23, 2019, 12:38 AM Richard Scales 
> wrote:
>
>> I put the 7805 in place but it made no difference whatsoever. I decided
>> to change the position of things so that the HV supply was at the 'other
>> end' of the clock and the CPU's were at the end where the signal goes to
>> the Smart Sockets. There seemed to be some improvement, at one point i
>> thought it was completely fixed though staring at the thing periodically I
>> could see that it was not not totally 'fixed'. Reading your comment about
>> ground wires I will beef-up the 0v and 5v connections to the logic boards
>> as they are indeed skinny at the moment.
>>
>> On Wednesday, 20 November 2019 16:59:26 UTC, Kevin A. wrote:
>>>
>>> Does it seem like the degree of glitching has been reduced, is the same,
>>> or worse with those 2 changes?
>>>
>>> An LM7805 could support your 5 volt rail depending on how you implement
>>> it. The higher the input voltage, the hotter it gets. If you can adjust
>>> your buck module to 8 volts, then put the 7805 after the buck module and
>>> see if that works. If your buck module will not go up to 8 volts, you could
>>> try using the 7805 directly from 12 to 5 volts if you're not pulling more
>>> than around 0.75 amps (power dissipation (heat) is increased because of the
>>> greater drop from 12 to 5 as opposed to 8 to 5).
>>>
>>> If that doesn't solve the problem then improving grounding is the next
>>> way to go. Ground paths ideally are short and use larger conductors. Having
>>> long, narrow ground wires strewn about may certainly be contributing to
>>> glitches from noise and undesirable ground loops.
>>>
>>> On Wed, Nov 20, 2019, 11:35 AM Richard Scales 
>>> wrote:
>>>
 I tried the first two suggestions and thought (initially) that all was
 good but upon watching in detail it would seem that it is the same.

 I have a L78M05 to hand - is that going to do the job?

 Otherwise I can get something like this
 https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ very
 quickly.



 On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:
>
> Here would be my first 2 suggestions in changes to your circuit:
>
> #1: I would definitely place the ground from my logic circuits
> straight to the main power ground, instead of routing it though the 5V 
> buck
> module. The buck converter is also a switching power supply and this could
> very well be coupling noise through the rest of your circuit, especially 
> if
> it is the only ground path for the logic.
>
> #2: If #1 does not fully alleviate the problem, I would try placing an
> electrolytic cap of between 100-470uF on the 5 volt rail close to the 
> logic
> circuits. This could help decouple the logic from any noise entering
> through the 5V rail.
>
> Finally, if the above two do not solve the problem, I would use a
> linear regulator after the 5V module to provide a clean 5 volts to your
> logic circuits. It looks like the 5V module has a trim pot on it, so I
> would increase the voltage to 6 or 7, and then use a 5 volt LDO (low
> dropout regulator) to provide the final 5 volts. This certainly will
> alleviate a large amount of noise on this line that you might not even be
> able to observe on your scope, unless you zoom in quite a bit on the
> vertical (voltage) scale (so that you're looking at hundreds or even tens
> of millivolts per division).
>
 --
 You received this message because you are subscribed to the Google
 Groups "neonixie-l" group.
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 an email to neoni...@googlegroups.com.
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 .

>>> --
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>> "neonixie-l" group.
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>> email to 

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Glad to hear you're making progress. Interesting that moving the HV psu
away before did not make a difference, but in the new position it did.
Something must have changed with your electrical connections as well which
resulted in that improvement.

Grounding is crucial to signal integrity no matter the circuit. Keeping the
ground path as short as possible with large, low impedance connections
should definitely improve the situation.

On Sat, Nov 23, 2019, 12:38 AM Richard Scales 
wrote:

> I put the 7805 in place but it made no difference whatsoever. I decided to
> change the position of things so that the HV supply was at the 'other end'
> of the clock and the CPU's were at the end where the signal goes to the
> Smart Sockets. There seemed to be some improvement, at one point i thought
> it was completely fixed though staring at the thing periodically I could
> see that it was not not totally 'fixed'. Reading your comment about ground
> wires I will beef-up the 0v and 5v connections to the logic boards as they
> are indeed skinny at the moment.
>
> On Wednesday, 20 November 2019 16:59:26 UTC, Kevin A. wrote:
>>
>> Does it seem like the degree of glitching has been reduced, is the same,
>> or worse with those 2 changes?
>>
>> An LM7805 could support your 5 volt rail depending on how you implement
>> it. The higher the input voltage, the hotter it gets. If you can adjust
>> your buck module to 8 volts, then put the 7805 after the buck module and
>> see if that works. If your buck module will not go up to 8 volts, you could
>> try using the 7805 directly from 12 to 5 volts if you're not pulling more
>> than around 0.75 amps (power dissipation (heat) is increased because of the
>> greater drop from 12 to 5 as opposed to 8 to 5).
>>
>> If that doesn't solve the problem then improving grounding is the next
>> way to go. Ground paths ideally are short and use larger conductors. Having
>> long, narrow ground wires strewn about may certainly be contributing to
>> glitches from noise and undesirable ground loops.
>>
>> On Wed, Nov 20, 2019, 11:35 AM Richard Scales 
>> wrote:
>>
>>> I tried the first two suggestions and thought (initially) that all was
>>> good but upon watching in detail it would seem that it is the same.
>>>
>>> I have a L78M05 to hand - is that going to do the job?
>>>
>>> Otherwise I can get something like this
>>> https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ very
>>> quickly.
>>>
>>>
>>>
>>> On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:

 Here would be my first 2 suggestions in changes to your circuit:

 #1: I would definitely place the ground from my logic circuits straight
 to the main power ground, instead of routing it though the 5V buck module.
 The buck converter is also a switching power supply and this could very
 well be coupling noise through the rest of your circuit, especially if it
 is the only ground path for the logic.

 #2: If #1 does not fully alleviate the problem, I would try placing an
 electrolytic cap of between 100-470uF on the 5 volt rail close to the logic
 circuits. This could help decouple the logic from any noise entering
 through the 5V rail.

 Finally, if the above two do not solve the problem, I would use a
 linear regulator after the 5V module to provide a clean 5 volts to your
 logic circuits. It looks like the 5V module has a trim pot on it, so I
 would increase the voltage to 6 or 7, and then use a 5 volt LDO (low
 dropout regulator) to provide the final 5 volts. This certainly will
 alleviate a large amount of noise on this line that you might not even be
 able to observe on your scope, unless you zoom in quite a bit on the
 vertical (voltage) scale (so that you're looking at hundreds or even tens
 of millivolts per division).

>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to neoni...@googlegroups.com.
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>>> https://groups.google.com/d/msgid/neonixie-l/7e183735-7ca9-4287-8cc8-51e22a65d43f%40googlegroups.com
>>> 
>>> .
>>>
>> --
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

I put the 7805 in place but it made no difference whatsoever. I decided to 
change the position of things so that the HV supply was at the 'other end' 
of the clock and the CPU's were at the end where the signal goes to the 
Smart Sockets. There seemed to be some improvement, at one point i thought 
it was completely fixed though staring at the thing periodically I could 
see that it was not not totally 'fixed'. Reading your comment about ground 
wires I will beef-up the 0v and 5v connections to the logic boards as they 
are indeed skinny at the moment.

On Wednesday, 20 November 2019 16:59:26 UTC, Kevin A. wrote:
>
> Does it seem like the degree of glitching has been reduced, is the same, 
> or worse with those 2 changes? 
>
> An LM7805 could support your 5 volt rail depending on how you implement 
> it. The higher the input voltage, the hotter it gets. If you can adjust 
> your buck module to 8 volts, then put the 7805 after the buck module and 
> see if that works. If your buck module will not go up to 8 volts, you could 
> try using the 7805 directly from 12 to 5 volts if you're not pulling more 
> than around 0.75 amps (power dissipation (heat) is increased because of the 
> greater drop from 12 to 5 as opposed to 8 to 5). 
>
> If that doesn't solve the problem then improving grounding is the next way 
> to go. Ground paths ideally are short and use larger conductors. Having 
> long, narrow ground wires strewn about may certainly be contributing to 
> glitches from noise and undesirable ground loops. 
>
> On Wed, Nov 20, 2019, 11:35 AM Richard Scales  > wrote:
>
>> I tried the first two suggestions and thought (initially) that all was 
>> good but upon watching in detail it would seem that it is the same.
>>
>> I have a L78M05 to hand - is that going to do the job?
>>
>> Otherwise I can get something like this 
>> https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ very 
>> quickly.
>>
>>
>>
>> On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:
>>>
>>> Here would be my first 2 suggestions in changes to your circuit:
>>>
>>> #1: I would definitely place the ground from my logic circuits straight 
>>> to the main power ground, instead of routing it though the 5V buck module. 
>>> The buck converter is also a switching power supply and this could very 
>>> well be coupling noise through the rest of your circuit, especially if it 
>>> is the only ground path for the logic.
>>>
>>> #2: If #1 does not fully alleviate the problem, I would try placing an 
>>> electrolytic cap of between 100-470uF on the 5 volt rail close to the logic 
>>> circuits. This could help decouple the logic from any noise entering 
>>> through the 5V rail.
>>>
>>> Finally, if the above two do not solve the problem, I would use a linear 
>>> regulator after the 5V module to provide a clean 5 volts to your logic 
>>> circuits. It looks like the 5V module has a trim pot on it, so I would 
>>> increase the voltage to 6 or 7, and then use a 5 volt LDO (low dropout 
>>> regulator) to provide the final 5 volts. This certainly will alleviate a 
>>> large amount of noise on this line that you might not even be able to 
>>> observe on your scope, unless you zoom in quite a bit on the vertical 
>>> (voltage) scale (so that you're looking at hundreds or even tens of 
>>> millivolts per division). 
>>>
>> -- 
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>> "neonixie-l" group.
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>> email to neoni...@googlegroups.com .
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>> https://groups.google.com/d/msgid/neonixie-l/7e183735-7ca9-4287-8cc8-51e22a65d43f%40googlegroups.com
>>  
>> 
>> .
>>
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[GastonP]

Ugh... it seems you have become a TEA (test equipment addict). It's 
difficult if not impossible to get out of that place. If I weren't in a 
constant state of squalor (due to that addiction) my house would look like 
a lab.
My wife uses other words to describe it :D

On Wednesday, November 20, 2019 at 11:28:32 PM UTC, Bill Notfaded wrote:
>
> Wow Kevin that's awesome that you sent it to Dave and he put it up on the 
> mailbag!  I love EEVBlog and spend a lot of time there.  I like trying to 
> converse with the voltnuts in the metrology forum even though some of those 
> guys are way out of my league.  They're nice still and tolerate me.  Now in 
> addition to Nixie tubes I've also got a vintage test gear habit!  I've even 
> merged my addictions and have a collection of Nixie counters, voltmeters, 
> and misc Nixie tube display devices made for things like X and Y in 
> machining and more!  My most recent test gear addiction has me fixing up a 
> Fluke 343A voltage reference and a set of L1 L2 GPS stations and I'm going 
> to mount the antenna on back yard roof I think.  I got the big L1 L2 survey 
> type antenna.  I figure if you want your volts stable and accurate gotta 
> have accurate time too right?  Voltnuttery X timenuttery!  I think I want a 
> rubidium oscilator now too... it's a lifestyle I guess??? 
>
> Best Regards,
>
> Bill
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Wow Kevin that's awesome that you sent it to Dave and he put it up on the
mailbag!  I love EEVBlog and spend a lot of time there.  I like trying to
converse with the voltnuts in the metrology forum even though some of those
guys are way out of my league.  They're nice still and tolerate me.  Now in
addition to Nixie tubes I've also got a vintage test gear habit!  I've even
merged my addictions and have a collection of Nixie counters, voltmeters,
and misc Nixie tube display devices made for things like X and Y in
machining and more!  My most recent test gear addiction has me fixing up a
Fluke 343A voltage reference and a set of L1 L2 GPS stations and I'm going
to mount the antenna on back yard roof I think.  I got the big L1 L2 survey
type antenna.  I figure if you want your volts stable and accurate gotta
have accurate time too right?  Voltnuttery X timenuttery!  I think I want a
rubidium oscilator now too... it's a lifestyle I guess???

Best Regards,

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[gregebert]

There are drop-in replacements for the 'old-school' linear voltage 
regulators, and they use high-frequency switching to minimize the component 
sizes.
Recom Power makes several of these, and I've used them on several projects 
with no problems.

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Thank you Mahdi! I highly recommend trying a hand at switched mode power
supply design; it will teach you a lot!

On Wed, Nov 20, 2019, 12:09 PM Mahdi Al Husseini 
wrote:

> Tremendous respect Michael. I am currently redesigning a boost converter
> using a LM3478. It’s a surprisingly involved process, especially if not
> well acquainted with power circuitry. I’ve found that, between refinement
> of component values and board layout design, it’s very much an art and
> science. Really liked the write up. Keep up the good work.
>
> On Wed, Nov 20, 2019 at 10:35 AM Richard Scales 
> wrote:
>
>> I tried the first two suggestions and thought (initially) that all was
>> good but upon watching in detail it would seem that it is the same.
>>
>> I have a L78M05 to hand - is that going to do the job?
>>
>> Otherwise I can get something like this
>> https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ very
>> quickly.
>>
>>
>>
>> On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:
>>>
>>> Here would be my first 2 suggestions in changes to your circuit:
>>>
>>> #1: I would definitely place the ground from my logic circuits straight
>>> to the main power ground, instead of routing it though the 5V buck module.
>>> The buck converter is also a switching power supply and this could very
>>> well be coupling noise through the rest of your circuit, especially if it
>>> is the only ground path for the logic.
>>>
>>> #2: If #1 does not fully alleviate the problem, I would try placing an
>>> electrolytic cap of between 100-470uF on the 5 volt rail close to the logic
>>> circuits. This could help decouple the logic from any noise entering
>>> through the 5V rail.
>>>
>>> Finally, if the above two do not solve the problem, I would use a linear
>>> regulator after the 5V module to provide a clean 5 volts to your logic
>>> circuits. It looks like the 5V module has a trim pot on it, so I would
>>> increase the voltage to 6 or 7, and then use a 5 volt LDO (low dropout
>>> regulator) to provide the final 5 volts. This certainly will alleviate a
>>> large amount of noise on this line that you might not even be able to
>>> observe on your scope, unless you zoom in quite a bit on the vertical
>>> (voltage) scale (so that you're looking at hundreds or even tens of
>>> millivolts per division).
>>>
>> --
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Mahdi Al Husseini]

I said Michael, meant Kevin*, sorry!

On Wed, Nov 20, 2019 at 10:59 AM Kevin A. 
wrote:

> Does it seem like the degree of glitching has been reduced, is the same,
> or worse with those 2 changes?
>
> An LM7805 could support your 5 volt rail depending on how you implement
> it. The higher the input voltage, the hotter it gets. If you can adjust
> your buck module to 8 volts, then put the 7805 after the buck module and
> see if that works. If your buck module will not go up to 8 volts, you could
> try using the 7805 directly from 12 to 5 volts if you're not pulling more
> than around 0.75 amps (power dissipation (heat) is increased because of the
> greater drop from 12 to 5 as opposed to 8 to 5).
>
> If that doesn't solve the problem then improving grounding is the next way
> to go. Ground paths ideally are short and use larger conductors. Having
> long, narrow ground wires strewn about may certainly be contributing to
> glitches from noise and undesirable ground loops.
>
> On Wed, Nov 20, 2019, 11:35 AM Richard Scales 
> wrote:
>
>> I tried the first two suggestions and thought (initially) that all was
>> good but upon watching in detail it would seem that it is the same.
>>
>> I have a L78M05 to hand - is that going to do the job?
>>
>> Otherwise I can get something like this
>> https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ very
>> quickly.
>>
>>
>>
>> On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:
>>>
>>> Here would be my first 2 suggestions in changes to your circuit:
>>>
>>> #1: I would definitely place the ground from my logic circuits straight
>>> to the main power ground, instead of routing it though the 5V buck module.
>>> The buck converter is also a switching power supply and this could very
>>> well be coupling noise through the rest of your circuit, especially if it
>>> is the only ground path for the logic.
>>>
>>> #2: If #1 does not fully alleviate the problem, I would try placing an
>>> electrolytic cap of between 100-470uF on the 5 volt rail close to the logic
>>> circuits. This could help decouple the logic from any noise entering
>>> through the 5V rail.
>>>
>>> Finally, if the above two do not solve the problem, I would use a linear
>>> regulator after the 5V module to provide a clean 5 volts to your logic
>>> circuits. It looks like the 5V module has a trim pot on it, so I would
>>> increase the voltage to 6 or 7, and then use a 5 volt LDO (low dropout
>>> regulator) to provide the final 5 volts. This certainly will alleviate a
>>> large amount of noise on this line that you might not even be able to
>>> observe on your scope, unless you zoom in quite a bit on the vertical
>>> (voltage) scale (so that you're looking at hundreds or even tens of
>>> millivolts per division).
>>>
>> --
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>> 
>> .
>>
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Mahdi Al Husseini]

Tremendous respect Michael. I am currently redesigning a boost converter
using a LM3478. It’s a surprisingly involved process, especially if not
well acquainted with power circuitry. I’ve found that, between refinement
of component values and board layout design, it’s very much an art and
science. Really liked the write up. Keep up the good work.

On Wed, Nov 20, 2019 at 10:35 AM Richard Scales 
wrote:

> I tried the first two suggestions and thought (initially) that all was
> good but upon watching in detail it would seem that it is the same.
>
> I have a L78M05 to hand - is that going to do the job?
>
> Otherwise I can get something like this
> https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ very
> quickly.
>
>
>
> On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:
>>
>> Here would be my first 2 suggestions in changes to your circuit:
>>
>> #1: I would definitely place the ground from my logic circuits straight
>> to the main power ground, instead of routing it though the 5V buck module.
>> The buck converter is also a switching power supply and this could very
>> well be coupling noise through the rest of your circuit, especially if it
>> is the only ground path for the logic.
>>
>> #2: If #1 does not fully alleviate the problem, I would try placing an
>> electrolytic cap of between 100-470uF on the 5 volt rail close to the logic
>> circuits. This could help decouple the logic from any noise entering
>> through the 5V rail.
>>
>> Finally, if the above two do not solve the problem, I would use a linear
>> regulator after the 5V module to provide a clean 5 volts to your logic
>> circuits. It looks like the 5V module has a trim pot on it, so I would
>> increase the voltage to 6 or 7, and then use a 5 volt LDO (low dropout
>> regulator) to provide the final 5 volts. This certainly will alleviate a
>> large amount of noise on this line that you might not even be able to
>> observe on your scope, unless you zoom in quite a bit on the vertical
>> (voltage) scale (so that you're looking at hundreds or even tens of
>> millivolts per division).
>>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

I tried the first two suggestions and thought (initially) that all was good 
but upon watching in detail it would seem that it is the same.

I have a L78M05 to hand - is that going to do the job?

Otherwise I can get something like this 
https://uk.rs-online.com/web/p/low-dropout-voltage-regulators/1246447/ very 
quickly.



On Wednesday, 20 November 2019 15:33:20 UTC, Kevin A. wrote:
>
> Here would be my first 2 suggestions in changes to your circuit:
>
> #1: I would definitely place the ground from my logic circuits straight to 
> the main power ground, instead of routing it though the 5V buck module. The 
> buck converter is also a switching power supply and this could very well be 
> coupling noise through the rest of your circuit, especially if it is the 
> only ground path for the logic.
>
> #2: If #1 does not fully alleviate the problem, I would try placing an 
> electrolytic cap of between 100-470uF on the 5 volt rail close to the logic 
> circuits. This could help decouple the logic from any noise entering 
> through the 5V rail.
>
> Finally, if the above two do not solve the problem, I would use a linear 
> regulator after the 5V module to provide a clean 5 volts to your logic 
> circuits. It looks like the 5V module has a trim pot on it, so I would 
> increase the voltage to 6 or 7, and then use a 5 volt LDO (low dropout 
> regulator) to provide the final 5 volts. This certainly will alleviate a 
> large amount of noise on this line that you might not even be able to 
> observe on your scope, unless you zoom in quite a bit on the vertical 
> (voltage) scale (so that you're looking at hundreds or even tens of 
> millivolts per division). 
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Also, not sure if you guys watch David Jones from EEVBlog, but I sent him 
one of these to critique and share his thoughts on what I made. You can 
watch it on youtube here: https://youtu.be/pt2CgSphN58?t=2255

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Here would be my first 2 suggestions in changes to your circuit:

#1: I would definitely place the ground from my logic circuits straight to 
the main power ground, instead of routing it though the 5V buck module. The 
buck converter is also a switching power supply and this could very well be 
coupling noise through the rest of your circuit, especially if it is the 
only ground path for the logic.

#2: If #1 does not fully alleviate the problem, I would try placing an 
electrolytic cap of between 100-470uF on the 5 volt rail close to the logic 
circuits. This could help decouple the logic from any noise entering 
through the 5V rail.

Finally, if the above two do not solve the problem, I would use a linear 
regulator after the 5V module to provide a clean 5 volts to your logic 
circuits. It looks like the 5V module has a trim pot on it, so I would 
increase the voltage to 6 or 7, and then use a 5 volt LDO (low dropout 
regulator) to provide the final 5 volts. This certainly will alleviate a 
large amount of noise on this line that you might not even be able to 
observe on your scope, unless you zoom in quite a bit on the vertical 
(voltage) scale (so that you're looking at hundreds or even tens of 
millivolts per division). 

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Hello, I was using a digital scope - I'll go and check settings. I also 
have analog scopes to hand so can do a comparison.

The Data line I speak of is the TX serial data out of an Arduino nano which 
is connected to the serial data input on the smart sockets - no need for 
clock. Yes, I believe it to be in spec - it's between 0V and 5V.

Richard


On Wednesday, 20 November 2019 08:57:53 UTC, GastonP wrote:
>
> Hi Richard,
>What's the bandwidth of your scope? Is it a digital or an analog one? 
> Did you check to not have bandwidth limit enabled when looking for noise in 
> the lines?  
> It could easily be that the scope is not up to snuff for the task of 
> hunting for glitches.
> Also, did you check whether the voltage in the data line (only one and no 
> clock? Wierd...) is within specs?
>
> Gaston
>
> On Wednesday, November 20, 2019 at 5:51:18 AM UTC, Richard Scales wrote:
>>
>> OK, here we go..
>>
>> 
>>
> I left it all running yesterday and the corruption was there on and off - 
>> mostly on! All the time the HV and 5V 'looked' clean (according to my 
>> scope) though there were clearly issues. It could perhaps be down to 
>> something non related though when I switch the HV supply for the NCH module 
>> - running only 6 tubes, order is restored (with the same wiring).
>>
>>
>> All pointers gleefully received!
>>
>>
>>
>>
>>
>>
>>
>>
>>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[GastonP]

Hi Richard,
   What's the bandwidth of your scope? Is it a digital or an analog one? 
Did you check to not have bandwidth limit enabled when looking for noise in 
the lines?  
It could easily be that the scope is not up to snuff for the task of 
hunting for glitches.
Also, did you check whether the voltage in the data line (only one and no 
clock? Wierd...) is within specs?

Gaston

On Wednesday, November 20, 2019 at 5:51:18 AM UTC, Richard Scales wrote:
>
> OK, here we go..
>
> 
>
I left it all running yesterday and the corruption was there on and off - 
> mostly on! All the time the HV and 5V 'looked' clean (according to my 
> scope) though there were clearly issues. It could perhaps be down to 
> something non related though when I switch the HV supply for the NCH module 
> - running only 6 tubes, order is restored (with the same wiring).
>
>
> All pointers gleefully received!
>
>
>
>
>
>
>
>
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Richard; If you could provide a few images of your setup and the wiring
specifically, that would be very helpful. I'm not sure how your grounds are
routed, but using several switching power supplies without adequate
grounding could cause that switching noise to couple through other parts of
your circuit.

Another problem I see is using the $2 buck converter to directly power the
logic. It provides little in the way of filtering and low noise output; it
would be perfect for preregulating 12 volts to 8-6, but then using a linear
regulator for a low noise 5 volt rail, which should alleviate power related
glitches occurring with the your control logic.

On Tue, Nov 19, 2019, 1:47 PM Bill van Dijk  wrote:

> Richard,
>
>
>
> Adding caps is not likely to improve things since your ripple current will
> increase, and only serve to make things hotter. If you suspect the caps
> (very possible) just replace them with the same value.
>
>
>
> Bill
>
>
>
> *From:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] *On
> Behalf Of *Richard Scales
> *Sent:* Tuesday, November 19, 2019 12:51 AM
> *To:* neonixie-l 
> *Subject:* Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
>
>
>
> Hello,
>
>
>
> I scoped the 5V and it all looked just fine, I am using the same 12V Buck
> converter that I have used everywhere else - I will try adding caps next.
>
>
>
> The 12V supply is capable of delivering much more than the required
> current and it is also driving a 6 digit B-7971 device at the same time
>
>
>
> I removed the HV enable/disable line - no difference.
>
>
>
> I will report back once I have added some capacitors.
>
>
>
>
>
> On Monday, 18 November 2019 12:00:16 UTC, Kevin A. wrote:
>
> Richard,
>
>
>
> The phenomena you describe seems to be quite interesting, and after
> thinking though the possibilities I have several ideas for you to try:
>
>
>
> The 2 most likely scenarios I can come up with would be:
>
>
>
> - Switching noise entering from the enable pin to the microcontroller. Try
> leaving the enable pin unconnected, and the power supply will stay on. If
> you find that this alleviates the problem, you can use an optocoupler to
> drive this pin and keep it galvanically isolated from your microcontroller.
>
>
>
> Or:
>
>
>
> - Noise or large voltage ripple present on the 5V rail. I'm not sure which
> 12 volt power supply you are using to drive the whole system, but the
> introduction of a large switching power supply could be taxing your 12 volt
> source and/or introducing unexpected noise. If you have a scope, see if you
> can probe the 12 volt line and the 5 volt line with the NCH device
> installed, and then with the new power supply installed. If you see a lot
> of noise or higher ripple with one versus the other, try to smooth things
> out with some general purpose 220 or 470uF electrolytic caps placed close
> to your circuits across power lines.
>
>
>
> I would also recommend using a linear regulator for powering logic such as
> your micro and the smartsocket controllers. You can pre-regulate 12 volts
> down to 8-6 volts, then use a high quality LDO (low dropout regulator) to
> provide clean power to your logic circuits. Switching power supplies can be
> very noisy and cause glitches just by output ripple present in normal
> operation.
>
>
>
> My suspicion is that the larger switching currents of the big supply may
> be inducing some noise on the low voltage side of your circuits, and seeing
> as the 5 volts is running directly off of a switching supply this noise is
> making it's way to the logic and causing glitches. You already tried moving
> the power supply away from the smart sockets and observed the same
> glitches, so I cannot imagine EMI/RFI emitted from the device itself is the
> issue.
>
>
>
> Of course, let me know what your findings are. We will solve this!
>
>
>
> On Mon, Nov 18, 2019, 1:48 AM Richard Scales 
> wrote:
>
> Just got to my desk after working away and have looked at the PSU's.
>
>
>
> First test - connect to 12V and set the output to 170V   all good.
>
>
>
> My clock build has ten ZM1350 smart sockets - though only using six at the
> moment - it has been running reliably for 1 month or so using one of the
> NCH6100HV power supplies to generate the 170V.
>
>
>
> I removed the NCH device, mounted the new supply, connected GND and 12V on
> one side, then the 170V Output and the output control on the other side and
> fired the thing up - all looked good.
>
>
>
> I have now had it running for almost an hour now and I am seeing some odd
> behaviour on the smart sockets in 

RE: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill van Dijk]

Richard,

 

Adding caps is not likely to improve things since your ripple current will 
increase, and only serve to make things hotter. If you suspect the caps (very 
possible) just replace them with the same value.

 

Bill

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Richard Scales
Sent: Tuesday, November 19, 2019 12:51 AM
To: neonixie-l 
Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

 

Hello,

 

I scoped the 5V and it all looked just fine, I am using the same 12V Buck 
converter that I have used everywhere else - I will try adding caps next.

 

The 12V supply is capable of delivering much more than the required current and 
it is also driving a 6 digit B-7971 device at the same time

 

I removed the HV enable/disable line - no difference.

 

I will report back once I have added some capacitors.

 



On Monday, 18 November 2019 12:00:16 UTC, Kevin A. wrote:

Richard,

 

The phenomena you describe seems to be quite interesting, and after thinking 
though the possibilities I have several ideas for you to try:

 

The 2 most likely scenarios I can come up with would be:

 

- Switching noise entering from the enable pin to the microcontroller. Try 
leaving the enable pin unconnected, and the power supply will stay on. If you 
find that this alleviates the problem, you can use an optocoupler to drive this 
pin and keep it galvanically isolated from your microcontroller. 

 

Or:

 

- Noise or large voltage ripple present on the 5V rail. I'm not sure which 12 
volt power supply you are using to drive the whole system, but the introduction 
of a large switching power supply could be taxing your 12 volt source and/or 
introducing unexpected noise. If you have a scope, see if you can probe the 12 
volt line and the 5 volt line with the NCH device installed, and then with the 
new power supply installed. If you see a lot of noise or higher ripple with one 
versus the other, try to smooth things out with some general purpose 220 or 
470uF electrolytic caps placed close to your circuits across power lines.

 

I would also recommend using a linear regulator for powering logic such as your 
micro and the smartsocket controllers. You can pre-regulate 12 volts down to 
8-6 volts, then use a high quality LDO (low dropout regulator) to provide clean 
power to your logic circuits. Switching power supplies can be very noisy and 
cause glitches just by output ripple present in normal operation. 

 

My suspicion is that the larger switching currents of the big supply may be 
inducing some noise on the low voltage side of your circuits, and seeing as the 
5 volts is running directly off of a switching supply this noise is making it's 
way to the logic and causing glitches. You already tried moving the power 
supply away from the smart sockets and observed the same glitches, so I cannot 
imagine EMI/RFI emitted from the device itself is the issue. 

 

Of course, let me know what your findings are. We will solve this! 

 

On Mon, Nov 18, 2019, 1:48 AM Richard Scales  > wrote:

Just got to my desk after working away and have looked at the PSU's.

 

First test - connect to 12V and set the output to 170V   all good.

 

My clock build has ten ZM1350 smart sockets - though only using six at the 
moment - it has been running reliably for 1 month or so using one of the 
NCH6100HV power supplies to generate the 170V.

 

I removed the NCH device, mounted the new supply, connected GND and 12V on one 
side, then the 170V Output and the output control on the other side and fired 
the thing up - all looked good.

 

I have now had it running for almost an hour now and I am seeing some odd 
behaviour on the smart sockets in as much as occasionally some characters are 
corrupted or the seconds misses a single change (ie, displays 1 then 3,4) other 
characters display garbage and some transition effects change.

 

I have checked all voltages on the Smart Sockets and right now - the 5V is at 
4.995V and the 170V is at 169.9V so I would expect that to be OK for the logic 
and the display.

 

The display blanking (processor disabling of the 170V output) is working 
perfectly - I am just getting corruption.

 

I have NOT connected GND on the output side as it appears to be the same 
connection as GND on the input side.

 

I have a small BUCk converter generating the 5V for the logic and that line 
appears to be clean.

 

I have mounted the new HV supply on one side of a perspex panel on 15mm 
standoffs, the smart sockets are on the other side of the panel with the same 
15mm standoffs.

 

Is there any risk that some form of RFI is causing the issue that I am seeing?

 

I removed the PSU from its mount and moved it away from the smart sockets - 
around 20cm and the symptoms remained.

 

If I put the NCH6100HV back in the circuit then order is restored.

 

Could you suggest where I should be looking next?

 

 

 

 



On Tuesday, 12 November 2019 19

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

gt;
>>
>>
>>
>>
>>
>> On Tuesday, 12 November 2019 19:16:05 UTC, Kevin A. wrote:
>>>
>>> Glad to hear it finally arrived! Looking forward to your feedback and 
>>> seeing it in action on the ZM1350 project. 
>>>
>>> On Tue, Nov 12, 2019, 1:46 PM Richard Scales  
>>> wrote:
>>>
>>>> Hello!
>>>>
>>>> After nearly a month after ordering - I am informed that the eagle has 
>>>> landed! (I am informed by Parcelforce in the UK that it is a busy time of 
>>>> year!). I am working away all week but my wife sent me stage by stage 
>>>> pictures of the package being unwrapped!
>>>>
>>>> moved the I am back Monday and will get it in to play on my ZM1350 
>> development setup - Thank you for all your help. I look forward to 
>> reporting on progress.
>>
>>>
>>>>
>>>> On Monday, 4 November 2019 15:42:35 UTC, Kevin A. wrote:
>>>>>
>>>>> So now the true reason for the delay reveals itself! Again, sorry for 
>>>>> that; a customs check just seems to be the luck of the draw. 
>>>>>
>>>>> On Mon, Nov 4, 2019, 10:11 AM Richard Scales  
>>>>> wrote:
>>>>>
>>>>>> Hello, yes, I just got the same notifications and now  Parcelforce in 
>>>>>> the UK seem to be accepting ownership!
>>>>>> My friend in HK is very pleased with his and has been sending me 
>>>>>> pictures of it all afternoon which has been fairly depressing - until 
>>>>>> now!
>>>>>> Lets see how long it takes Parcelforce to work out how much to fleece 
>>>>>> me for import charges!
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>>>>>>>
>>>>>>> Richard,
>>>>>>>
>>>>>>> Good news, looks like there was a new scan today. Package should be 
>>>>>>> on it's way! 
>>>>>>>
>>>>>>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales  
>>>>>>> wrote:
>>>>>>>
>>>>>>>> All understood, thank you for your help.
>>>>>>>>
>>>>>>>> Sent from my Huawei phone
>>>>>>>>
>>>>>>>>
>>>>>>>>  Original Message 
>>>>>>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power 
>>>>>>>> supply
>>>>>>>> From: "Kevin A." 
>>>>>>>> To: neonixie-l 
>>>>>>>> CC: 
>>>>>>>>
>>>>>>>> Richard,
>>>>>>>>
>>>>>>>> Just letting you know that I also reached out to parcelforce in the 
>>>>>>>> UK and submitted an inquiry with them as well. If none of the requests 
>>>>>>>> I've 
>>>>>>>> submitted turns up a result in one week's time (by November 8th, 
>>>>>>>> 2019), 
>>>>>>>> I'll be sending you a new package via. DHL.
>>>>>>>>
>>>>>>>> Thank you for your patience, 
>>>>>>>> Kevin
>>>>>>>>
>>>>>>>> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales <
>>>>>>>> ric...@scalesweb.co.uk> wrote:
>>>>>>>>
>>>>>>>> I got my friend in Hongkong to place an order from the second batch 
>>>>>>>> and his have just arrived in HK, I suspect he might be seeing his 
>>>>>>>> before I 
>>>>>>>> see mine!
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>>>>>>>
>>>>>>>> After a lengthy phone conversation with USPS representatives, they 
>>>>>>>> submitted an internal request for an update on the package. Hopefully 
>>>>>>>> it is 
>>>>>>>> still in transit to you, and maybe forewent some local scans in the 
>>>>>>>> UK. I 
>>>>>>>> shipped another unit to Australia the same week and the trac

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

ay, 4 November 2019 15:42:35 UTC, Kevin A. wrote:
>>>>
>>>> So now the true reason for the delay reveals itself! Again, sorry for
>>>> that; a customs check just seems to be the luck of the draw.
>>>>
>>>> On Mon, Nov 4, 2019, 10:11 AM Richard Scales 
>>>> wrote:
>>>>
>>>>> Hello, yes, I just got the same notifications and now  Parcelforce in
>>>>> the UK seem to be accepting ownership!
>>>>> My friend in HK is very pleased with his and has been sending me
>>>>> pictures of it all afternoon which has been fairly depressing - until now!
>>>>> Lets see how long it takes Parcelforce to work out how much to fleece
>>>>> me for import charges!
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>>>>>>
>>>>>> Richard,
>>>>>>
>>>>>> Good news, looks like there was a new scan today. Package should be
>>>>>> on it's way!
>>>>>>
>>>>>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales 
>>>>>> wrote:
>>>>>>
>>>>>>> All understood, thank you for your help.
>>>>>>>
>>>>>>> Sent from my Huawei phone
>>>>>>>
>>>>>>>
>>>>>>>  Original Message 
>>>>>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power
>>>>>>> supply
>>>>>>> From: "Kevin A."
>>>>>>> To: neonixie-l
>>>>>>> CC:
>>>>>>>
>>>>>>> Richard,
>>>>>>>
>>>>>>> Just letting you know that I also reached out to parcelforce in the
>>>>>>> UK and submitted an inquiry with them as well. If none of the requests 
>>>>>>> I've
>>>>>>> submitted turns up a result in one week's time (by November 8th, 2019),
>>>>>>> I'll be sending you a new package via. DHL.
>>>>>>>
>>>>>>> Thank you for your patience,
>>>>>>> Kevin
>>>>>>>
>>>>>>> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales <
>>>>>>> ric...@scalesweb.co.uk> wrote:
>>>>>>>
>>>>>>> I got my friend in Hongkong to place an order from the second batch
>>>>>>> and his have just arrived in HK, I suspect he might be seeing his 
>>>>>>> before I
>>>>>>> see mine!
>>>>>>>
>>>>>>>
>>>>>>> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>>>>>>
>>>>>>> After a lengthy phone conversation with USPS representatives, they
>>>>>>> submitted an internal request for an update on the package. Hopefully 
>>>>>>> it is
>>>>>>> still in transit to you, and maybe forewent some local scans in the UK. 
>>>>>>> I
>>>>>>> shipped another unit to Australia the same week and the tracking history
>>>>>>> looks similarly sparse, with the package arriving just today.
>>>>>>>
>>>>>>> Of course, I'll keep you posted. Thanks.
>>>>>>>
>>>>>>> On Wed, Oct 30, 2019, 7:32 PM Kevin A. <
>>>>>>> ka...@scarletmail.rutgers.edu> wrote:
>>>>>>>
>>>>>>> I see that on my end as well. I do not send packages to the UK
>>>>>>> often, so I can't comment on whether this is normal or not. I did just
>>>>>>> submit a formal search request for this package through the USPS website
>>>>>>> and I'm calling USPS now. As it is after business hours, if I cannot 
>>>>>>> reach
>>>>>>> anyone tonight I'll place another call tomorrow early in the day.
>>>>>>>
>>>>>>> I'll keep you posted with any updates. Worst case, if it is
>>>>>>> determined to be completely lost I can recover the insured value and 
>>>>>>> send
>>>>>>> you another package (with a different carrier).
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Kevin
>>>>>>>
>

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Have you tried hooking it up to a scope?

Bill

On Sun, Nov 17, 2019, 11:48 PM Richard Scales 
wrote:

> Just got to my desk after working away and have looked at the PSU's.
>
> First test - connect to 12V and set the output to 170V   all good.
>
> My clock build has ten ZM1350 smart sockets - though only using six at the
> moment - it has been running reliably for 1 month or so using one of the
> NCH6100HV power supplies to generate the 170V.
>
> I removed the NCH device, mounted the new supply, connected GND and 12V on
> one side, then the 170V Output and the output control on the other side and
> fired the thing up - all looked good.
>
> I have now had it running for almost an hour now and I am seeing some odd
> behaviour on the smart sockets in as much as occasionally some characters
> are corrupted or the seconds misses a single change (ie, displays 1 then
> 3,4) other characters display garbage and some transition effects change.
>
> I have checked all voltages on the Smart Sockets and right now - the 5V is
> at 4.995V and the 170V is at 169.9V so I would expect that to be OK for the
> logic and the display.
>
> The display blanking (processor disabling of the 170V output) is working
> perfectly - I am just getting corruption.
>
> I have NOT connected GND on the output side as it appears to be the same
> connection as GND on the input side.
>
> I have a small BUCk converter generating the 5V for the logic and that
> line appears to be clean.
>
> I have mounted the new HV supply on one side of a perspex panel on 15mm
> standoffs, the smart sockets are on the other side of the panel with the
> same 15mm standoffs.
>
> Is there any risk that some form of RFI is causing the issue that I am
> seeing?
>
> I removed the PSU from its mount and moved it away from the smart sockets
> - around 20cm and the symptoms remained.
>
> If I put the NCH6100HV back in the circuit then order is restored.
>
> Could you suggest where I should be looking next?
>
>
>
>
>
>
> On Tuesday, 12 November 2019 19:16:05 UTC, Kevin A. wrote:
>>
>> Glad to hear it finally arrived! Looking forward to your feedback and
>> seeing it in action on the ZM1350 project.
>>
>> On Tue, Nov 12, 2019, 1:46 PM Richard Scales 
>> wrote:
>>
>>> Hello!
>>>
>>> After nearly a month after ordering - I am informed that the eagle has
>>> landed! (I am informed by Parcelforce in the UK that it is a busy time of
>>> year!). I am working away all week but my wife sent me stage by stage
>>> pictures of the package being unwrapped!
>>>
>>> moved the I am back Monday and will get it in to play on my ZM1350
> development setup - Thank you for all your help. I look forward to
> reporting on progress.
>
>>
>>>
>>> On Monday, 4 November 2019 15:42:35 UTC, Kevin A. wrote:
>>>>
>>>> So now the true reason for the delay reveals itself! Again, sorry for
>>>> that; a customs check just seems to be the luck of the draw.
>>>>
>>>> On Mon, Nov 4, 2019, 10:11 AM Richard Scales 
>>>> wrote:
>>>>
>>>>> Hello, yes, I just got the same notifications and now  Parcelforce in
>>>>> the UK seem to be accepting ownership!
>>>>> My friend in HK is very pleased with his and has been sending me
>>>>> pictures of it all afternoon which has been fairly depressing - until now!
>>>>> Lets see how long it takes Parcelforce to work out how much to fleece
>>>>> me for import charges!
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>>>>>>
>>>>>> Richard,
>>>>>>
>>>>>> Good news, looks like there was a new scan today. Package should be
>>>>>> on it's way!
>>>>>>
>>>>>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales 
>>>>>> wrote:
>>>>>>
>>>>>>> All understood, thank you for your help.
>>>>>>>
>>>>>>> Sent from my Huawei phone
>>>>>>>
>>>>>>>
>>>>>>>  Original Message 
>>>>>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power
>>>>>>> supply
>>>>>>> From: "Kevin A."
>>>>>>> To: neonixie-l
>>>>>>> CC:
>>>>>>>
>>>>>>> Richard,
>>>>>>

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Just got to my desk after working away and have looked at the PSU's.

First test - connect to 12V and set the output to 170V   all good.

My clock build has ten ZM1350 smart sockets - though only using six at the 
moment - it has been running reliably for 1 month or so using one of the 
NCH6100HV power supplies to generate the 170V.

I removed the NCH device, mounted the new supply, connected GND and 12V on 
one side, then the 170V Output and the output control on the other side and 
fired the thing up - all looked good.

I have now had it running for almost an hour now and I am seeing some odd 
behaviour on the smart sockets in as much as occasionally some characters 
are corrupted or the seconds misses a single change (ie, displays 1 then 
3,4) other characters display garbage and some transition effects change.

I have checked all voltages on the Smart Sockets and right now - the 5V is 
at 4.995V and the 170V is at 169.9V so I would expect that to be OK for the 
logic and the display.

The display blanking (processor disabling of the 170V output) is working 
perfectly - I am just getting corruption.

I have NOT connected GND on the output side as it appears to be the same 
connection as GND on the input side.

I have a small BUCk converter generating the 5V for the logic and that line 
appears to be clean.

I have mounted the new HV supply on one side of a perspex panel on 15mm 
standoffs, the smart sockets are on the other side of the panel with the 
same 15mm standoffs.

Is there any risk that some form of RFI is causing the issue that I am 
seeing?

I removed the PSU from its mount and moved it away from the smart sockets - 
around 20cm and the symptoms remained.

If I put the NCH6100HV back in the circuit then order is restored.

Could you suggest where I should be looking next?






On Tuesday, 12 November 2019 19:16:05 UTC, Kevin A. wrote:
>
> Glad to hear it finally arrived! Looking forward to your feedback and 
> seeing it in action on the ZM1350 project. 
>
> On Tue, Nov 12, 2019, 1:46 PM Richard Scales  
> wrote:
>
>> Hello!
>>
>> After nearly a month after ordering - I am informed that the eagle has 
>> landed! (I am informed by Parcelforce in the UK that it is a busy time of 
>> year!). I am working away all week but my wife sent me stage by stage 
>> pictures of the package being unwrapped!
>>
>> moved the I am back Monday and will get it in to play on my ZM1350 
development setup - Thank you for all your help. I look forward to 
reporting on progress.

>
>>
>> On Monday, 4 November 2019 15:42:35 UTC, Kevin A. wrote:
>>>
>>> So now the true reason for the delay reveals itself! Again, sorry for 
>>> that; a customs check just seems to be the luck of the draw. 
>>>
>>> On Mon, Nov 4, 2019, 10:11 AM Richard Scales  
>>> wrote:
>>>
>>>> Hello, yes, I just got the same notifications and now  Parcelforce in 
>>>> the UK seem to be accepting ownership!
>>>> My friend in HK is very pleased with his and has been sending me 
>>>> pictures of it all afternoon which has been fairly depressing - until now!
>>>> Lets see how long it takes Parcelforce to work out how much to fleece 
>>>> me for import charges!
>>>>
>>>>
>>>>
>>>>
>>>> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>>>>>
>>>>> Richard,
>>>>>
>>>>> Good news, looks like there was a new scan today. Package should be on 
>>>>> it's way! 
>>>>>
>>>>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales  
>>>>> wrote:
>>>>>
>>>>>> All understood, thank you for your help.
>>>>>>
>>>>>> Sent from my Huawei phone
>>>>>>
>>>>>>
>>>>>>  Original Message 
>>>>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
>>>>>> From: "Kevin A." 
>>>>>> To: neonixie-l 
>>>>>> CC: 
>>>>>>
>>>>>> Richard,
>>>>>>
>>>>>> Just letting you know that I also reached out to parcelforce in the 
>>>>>> UK and submitted an inquiry with them as well. If none of the requests 
>>>>>> I've 
>>>>>> submitted turns up a result in one week's time (by November 8th, 2019), 
>>>>>> I'll be sending you a new package via. DHL.
>>>>>>
>>>>>> Thank you for your patience, 
>>>>>> Kevin
>>>>>>
>>>>>> On Thu, Oct 31, 2019 at 

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Glad to hear it finally arrived! Looking forward to your feedback and
seeing it in action on the ZM1350 project.

On Tue, Nov 12, 2019, 1:46 PM Richard Scales 
wrote:

> Hello!
>
> After nearly a month after ordering - I am informed that the eagle has
> landed! (I am informed by Parcelforce in the UK that it is a busy time of
> year!). I am working away all week but my wife sent me stage by stage
> pictures of the package being unwrapped!
>
> I am back Monday and will get it in to play on my ZM1350 development setup
> - Thank you for all your help. I look forward to reporting on progress.
>
>
> On Monday, 4 November 2019 15:42:35 UTC, Kevin A. wrote:
>>
>> So now the true reason for the delay reveals itself! Again, sorry for
>> that; a customs check just seems to be the luck of the draw.
>>
>> On Mon, Nov 4, 2019, 10:11 AM Richard Scales 
>> wrote:
>>
>>> Hello, yes, I just got the same notifications and now  Parcelforce in
>>> the UK seem to be accepting ownership!
>>> My friend in HK is very pleased with his and has been sending me
>>> pictures of it all afternoon which has been fairly depressing - until now!
>>> Lets see how long it takes Parcelforce to work out how much to fleece me
>>> for import charges!
>>>
>>>
>>>
>>>
>>> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>>>>
>>>> Richard,
>>>>
>>>> Good news, looks like there was a new scan today. Package should be on
>>>> it's way!
>>>>
>>>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales  wrote:
>>>>
>>>>> All understood, thank you for your help.
>>>>>
>>>>> Sent from my Huawei phone
>>>>>
>>>>>
>>>>>  Original Message 
>>>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
>>>>> From: "Kevin A."
>>>>> To: neonixie-l
>>>>> CC:
>>>>>
>>>>> Richard,
>>>>>
>>>>> Just letting you know that I also reached out to parcelforce in the UK
>>>>> and submitted an inquiry with them as well. If none of the requests I've
>>>>> submitted turns up a result in one week's time (by November 8th, 2019),
>>>>> I'll be sending you a new package via. DHL.
>>>>>
>>>>> Thank you for your patience,
>>>>> Kevin
>>>>>
>>>>> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales 
>>>>> wrote:
>>>>>
>>>>> I got my friend in Hongkong to place an order from the second batch
>>>>> and his have just arrived in HK, I suspect he might be seeing his before I
>>>>> see mine!
>>>>>
>>>>>
>>>>> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>>>>
>>>>> After a lengthy phone conversation with USPS representatives, they
>>>>> submitted an internal request for an update on the package. Hopefully it 
>>>>> is
>>>>> still in transit to you, and maybe forewent some local scans in the UK. I
>>>>> shipped another unit to Australia the same week and the tracking history
>>>>> looks similarly sparse, with the package arriving just today.
>>>>>
>>>>> Of course, I'll keep you posted. Thanks.
>>>>>
>>>>> On Wed, Oct 30, 2019, 7:32 PM Kevin A. 
>>>>> wrote:
>>>>>
>>>>> I see that on my end as well. I do not send packages to the UK often,
>>>>> so I can't comment on whether this is normal or not. I did just submit a
>>>>> formal search request for this package through the USPS website and I'm
>>>>> calling USPS now. As it is after business hours, if I cannot reach anyone
>>>>> tonight I'll place another call tomorrow early in the day.
>>>>>
>>>>> I'll keep you posted with any updates. Worst case, if it is determined
>>>>> to be completely lost I can recover the insured value and send you another
>>>>> package (with a different carrier).
>>>>>
>>>>> Thanks,
>>>>> Kevin
>>>>>
>>>>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales 
>>>>> wrote:
>>>>>
>>>>> Thank you. Oddly USPS has it as having left London Heathrow on the
>>>>> 24th, no updates since. The UK handler Parcel fo

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Hello!

After nearly a month after ordering - I am informed that the eagle has 
landed! (I am informed by Parcelforce in the UK that it is a busy time of 
year!). I am working away all week but my wife sent me stage by stage 
pictures of the package being unwrapped!

I am back Monday and will get it in to play on my ZM1350 development setup 
- Thank you for all your help. I look forward to reporting on progress.


On Monday, 4 November 2019 15:42:35 UTC, Kevin A. wrote:
>
> So now the true reason for the delay reveals itself! Again, sorry for 
> that; a customs check just seems to be the luck of the draw. 
>
> On Mon, Nov 4, 2019, 10:11 AM Richard Scales  > wrote:
>
>> Hello, yes, I just got the same notifications and now  Parcelforce in the 
>> UK seem to be accepting ownership!
>> My friend in HK is very pleased with his and has been sending me pictures 
>> of it all afternoon which has been fairly depressing - until now!
>> Lets see how long it takes Parcelforce to work out how much to fleece me 
>> for import charges!
>>
>>
>>
>>
>> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>>>
>>> Richard,
>>>
>>> Good news, looks like there was a new scan today. Package should be on 
>>> it's way! 
>>>
>>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales  wrote:
>>>
>>>> All understood, thank you for your help.
>>>>
>>>> Sent from my Huawei phone
>>>>
>>>>
>>>>  Original Message 
>>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
>>>> From: "Kevin A." 
>>>> To: neonixie-l 
>>>> CC: 
>>>>
>>>> Richard,
>>>>
>>>> Just letting you know that I also reached out to parcelforce in the UK 
>>>> and submitted an inquiry with them as well. If none of the requests I've 
>>>> submitted turns up a result in one week's time (by November 8th, 2019), 
>>>> I'll be sending you a new package via. DHL.
>>>>
>>>> Thank you for your patience, 
>>>> Kevin
>>>>
>>>> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales  
>>>> wrote:
>>>>
>>>> I got my friend in Hongkong to place an order from the second batch and 
>>>> his have just arrived in HK, I suspect he might be seeing his before I see 
>>>> mine!
>>>>
>>>>
>>>> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>>>
>>>> After a lengthy phone conversation with USPS representatives, they 
>>>> submitted an internal request for an update on the package. Hopefully it 
>>>> is 
>>>> still in transit to you, and maybe forewent some local scans in the UK. I 
>>>> shipped another unit to Australia the same week and the tracking history 
>>>> looks similarly sparse, with the package arriving just today.
>>>>
>>>> Of course, I'll keep you posted. Thanks. 
>>>>
>>>> On Wed, Oct 30, 2019, 7:32 PM Kevin A.  
>>>> wrote:
>>>>
>>>> I see that on my end as well. I do not send packages to the UK often, 
>>>> so I can't comment on whether this is normal or not. I did just submit a 
>>>> formal search request for this package through the USPS website and I'm 
>>>> calling USPS now. As it is after business hours, if I cannot reach anyone 
>>>> tonight I'll place another call tomorrow early in the day. 
>>>>
>>>> I'll keep you posted with any updates. Worst case, if it is determined 
>>>> to be completely lost I can recover the insured value and send you another 
>>>> package (with a different carrier). 
>>>>
>>>> Thanks,
>>>> Kevin
>>>>
>>>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales  
>>>> wrote:
>>>>
>>>> Thank you. Oddly USPS has it as having left London Heathrow on the 
>>>> 24th, no updates since. The UK handler Parcel force confirmed that it has 
>>>> not been scanned into their network ☹️
>>>>
>>>> -- 
>>>> You received this message because you are subscribed to the Google 
>>>> Groups "neonixie-l" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send 
>>>> an email to neoni...@googlegroups.com.
>>>> To view this discussion on the web, visit 
>>>> https://groups.google.com/d/msgid/neonixie-l/17ed

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

So now the true reason for the delay reveals itself! Again, sorry for that;
a customs check just seems to be the luck of the draw.

On Mon, Nov 4, 2019, 10:11 AM Richard Scales 
wrote:

> Hello, yes, I just got the same notifications and now  Parcelforce in the
> UK seem to be accepting ownership!
> My friend in HK is very pleased with his and has been sending me pictures
> of it all afternoon which has been fairly depressing - until now!
> Lets see how long it takes Parcelforce to work out how much to fleece me
> for import charges!
>
>
>
>
> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>>
>> Richard,
>>
>> Good news, looks like there was a new scan today. Package should be on
>> it's way!
>>
>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales  wrote:
>>
>>> All understood, thank you for your help.
>>>
>>> Sent from my Huawei phone
>>>
>>>
>>>  Original Message 
>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
>>> From: "Kevin A."
>>> To: neonixie-l
>>> CC:
>>>
>>> Richard,
>>>
>>> Just letting you know that I also reached out to parcelforce in the UK
>>> and submitted an inquiry with them as well. If none of the requests I've
>>> submitted turns up a result in one week's time (by November 8th, 2019),
>>> I'll be sending you a new package via. DHL.
>>>
>>> Thank you for your patience,
>>> Kevin
>>>
>>> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales 
>>> wrote:
>>>
>>> I got my friend in Hongkong to place an order from the second batch and
>>> his have just arrived in HK, I suspect he might be seeing his before I see
>>> mine!
>>>
>>>
>>> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>>
>>> After a lengthy phone conversation with USPS representatives, they
>>> submitted an internal request for an update on the package. Hopefully it is
>>> still in transit to you, and maybe forewent some local scans in the UK. I
>>> shipped another unit to Australia the same week and the tracking history
>>> looks similarly sparse, with the package arriving just today.
>>>
>>> Of course, I'll keep you posted. Thanks.
>>>
>>> On Wed, Oct 30, 2019, 7:32 PM Kevin A. 
>>> wrote:
>>>
>>> I see that on my end as well. I do not send packages to the UK often, so
>>> I can't comment on whether this is normal or not. I did just submit a
>>> formal search request for this package through the USPS website and I'm
>>> calling USPS now. As it is after business hours, if I cannot reach anyone
>>> tonight I'll place another call tomorrow early in the day.
>>>
>>> I'll keep you posted with any updates. Worst case, if it is determined
>>> to be completely lost I can recover the insured value and send you another
>>> package (with a different carrier).
>>>
>>> Thanks,
>>> Kevin
>>>
>>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales 
>>> wrote:
>>>
>>> Thank you. Oddly USPS has it as having left London Heathrow on the 24th,
>>> no updates since. The UK handler Parcel force confirmed that it has not
>>> been scanned into their network ☹️
>>>
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to neoni...@googlegroups.com.
>>> To view this discussion on the web, visit
>>> https://groups.google.com/d/msgid/neonixie-l/17eda207-03b3-4ad0-b178-d187660e2b27%40googlegroups.com
>>> .
>>>
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to neoni...@googlegroups.com.
>>> To view this discussion on the web, visit
>>> https://groups.google.com/d/msgid/neonixie-l/87edb651-2e62-4207-821b-a1baebd4fe4e%40googlegroups.com
>>> <https://groups.google.com/d/msgid/neonixie-l/87edb651-2e62-4207-821b-a1baebd4fe4e%40googlegroups.com?utm_medium=email_source=footer>
>>> .
>>>
>>> --
>>> You received this message because you are subscribed to a topic in the
>>> Google Groups "neonixie-l" group.
>>> To unsubscribe from this topic, 

Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Hello, yes, I just got the same notifications and now  Parcelforce in the 
UK seem to be accepting ownership!
My friend in HK is very pleased with his and has been sending me pictures 
of it all afternoon which has been fairly depressing - until now!
Lets see how long it takes Parcelforce to work out how much to fleece me 
for import charges!




On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote:
>
> Richard,
>
> Good news, looks like there was a new scan today. Package should be on 
> it's way! 
>
> On Fri, Nov 1, 2019, 10:25 AM Richard Scales  > wrote:
>
>> All understood, thank you for your help.
>>
>> Sent from my Huawei phone
>>
>>
>> -------- Original Message ----
>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
>> From: "Kevin A." 
>> To: neonixie-l 
>> CC: 
>>
>> Richard,
>>
>> Just letting you know that I also reached out to parcelforce in the UK 
>> and submitted an inquiry with them as well. If none of the requests I've 
>> submitted turns up a result in one week's time (by November 8th, 2019), 
>> I'll be sending you a new package via. DHL.
>>
>> Thank you for your patience, 
>> Kevin
>>
>> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales > > wrote:
>>
>> I got my friend in Hongkong to place an order from the second batch and 
>> his have just arrived in HK, I suspect he might be seeing his before I see 
>> mine!
>>
>>
>> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>
>> After a lengthy phone conversation with USPS representatives, they 
>> submitted an internal request for an update on the package. Hopefully it is 
>> still in transit to you, and maybe forewent some local scans in the UK. I 
>> shipped another unit to Australia the same week and the tracking history 
>> looks similarly sparse, with the package arriving just today.
>>
>> Of course, I'll keep you posted. Thanks. 
>>
>> On Wed, Oct 30, 2019, 7:32 PM Kevin A.  
>> wrote:
>>
>> I see that on my end as well. I do not send packages to the UK often, so 
>> I can't comment on whether this is normal or not. I did just submit a 
>> formal search request for this package through the USPS website and I'm 
>> calling USPS now. As it is after business hours, if I cannot reach anyone 
>> tonight I'll place another call tomorrow early in the day. 
>>
>> I'll keep you posted with any updates. Worst case, if it is determined to 
>> be completely lost I can recover the insured value and send you another 
>> package (with a different carrier). 
>>
>> Thanks,
>> Kevin
>>
>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales  
>> wrote:
>>
>> Thank you. Oddly USPS has it as having left London Heathrow on the 24th, 
>> no updates since. The UK handler Parcel force confirmed that it has not 
>> been scanned into their network ☹️
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neoni...@googlegroups.com.
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/17eda207-03b3-4ad0-b178-d187660e2b27%40googlegroups.com
>> .
>>
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>> "neonixie-l" group.
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>>  
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Richard,

Good news, looks like there was a new scan today. Package should be on it's
way!

On Fri, Nov 1, 2019, 10:25 AM Richard Scales  wrote:

> All understood, thank you for your help.
>
> Sent from my Huawei phone
>
>
>  Original Message ----
> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supply
> From: "Kevin A."
> To: neonixie-l
> CC:
>
> Richard,
>
> Just letting you know that I also reached out to parcelforce in the UK and
> submitted an inquiry with them as well. If none of the requests I've
> submitted turns up a result in one week's time (by November 8th, 2019),
> I'll be sending you a new package via. DHL.
>
> Thank you for your patience,
> Kevin
>
> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales 
> wrote:
>
> I got my friend in Hongkong to place an order from the second batch and
> his have just arrived in HK, I suspect he might be seeing his before I see
> mine!
>
>
> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>
> After a lengthy phone conversation with USPS representatives, they
> submitted an internal request for an update on the package. Hopefully it is
> still in transit to you, and maybe forewent some local scans in the UK. I
> shipped another unit to Australia the same week and the tracking history
> looks similarly sparse, with the package arriving just today.
>
> Of course, I'll keep you posted. Thanks.
>
> On Wed, Oct 30, 2019, 7:32 PM Kevin A. 
> wrote:
>
> I see that on my end as well. I do not send packages to the UK often, so I
> can't comment on whether this is normal or not. I did just submit a formal
> search request for this package through the USPS website and I'm calling
> USPS now. As it is after business hours, if I cannot reach anyone tonight
> I'll place another call tomorrow early in the day.
>
> I'll keep you posted with any updates. Worst case, if it is determined to
> be completely lost I can recover the insured value and send you another
> package (with a different carrier).
>
> Thanks,
> Kevin
>
> On Wed, Oct 30, 2019, 7:13 PM Richard Scales 
> wrote:
>
> Thank you. Oddly USPS has it as having left London Heathrow on the 24th,
> no updates since. The UK handler Parcel force confirmed that it has not
> been scanned into their network ☹️
>
> --
> You received this message because you are subscribed to the Google Groups
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to neoni...@googlegroups.com.
> To view this discussion on the web, visit
> https://groups.google.com/d/msgid/neonixie-l/17eda207-03b3-4ad0-b178-d187660e2b27%40googlegroups.com
> .
>
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

All understood, thank you for your help.Sent from my Huawei phone Original Message Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supplyFrom: "Kevin A." To: neonixie-l CC: Richard,Just letting you know that I also reached out to parcelforce in the UK and submitted an inquiry with them as well. If none of the requests I've submitted turns up a result in one week's time (by November 8th, 2019), I'll be sending you a new package via. DHL.Thank you for your patience, KevinOn Thu, Oct 31, 2019 at 4:07 PM Richard Scales  wrote:I got my friend in Hongkong to place an order from the second batch and his have just arrived in HK, I suspect he might be seeing his before I see mine!On Thursday, 31 October 2019 00:36:44 UTC, Kevin A.  wrote:After a lengthy phone conversation with USPS representatives, they submitted an internal request for an update on the package. Hopefully it is still in transit to you, and maybe forewent some local scans in the UK. I shipped another unit to Australia the same week and the tracking history looks similarly sparse, with the package arriving just today.Of course, I'll keep you posted. Thanks. On Wed, Oct 30, 2019, 7:32 PM Kevin A.  wrote:I see that on my end as well. I do not send packages to the UK often, so I can't comment on whether this is normal or not. I did just submit a formal search request for this package through the USPS website and I'm calling USPS now. As it is after business hours, if I cannot reach anyone tonight I'll place another call tomorrow early in the day. I'll keep you posted with any updates. Worst case, if it is determined to be completely lost I can recover the insured value and send you another package (with a different carrier). Thanks,KevinOn Wed, Oct 30, 2019, 7:13 PM Richard Scales  wrote:Thank you. Oddly USPS has it as having left London Heathrow on the 24th, no updates since. The UK handler Parcel force confirmed that it has not been scanned into their network ☹️

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Richard,

Just letting you know that I also reached out to parcelforce in the UK and
submitted an inquiry with them as well. If none of the requests I've
submitted turns up a result in one week's time (by November 8th, 2019),
I'll be sending you a new package via. DHL.

Thank you for your patience,
Kevin

On Thu, Oct 31, 2019 at 4:07 PM Richard Scales 
wrote:

> I got my friend in Hongkong to place an order from the second batch and
> his have just arrived in HK, I suspect he might be seeing his before I see
> mine!
>
>
> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>
>> After a lengthy phone conversation with USPS representatives, they
>> submitted an internal request for an update on the package. Hopefully it is
>> still in transit to you, and maybe forewent some local scans in the UK. I
>> shipped another unit to Australia the same week and the tracking history
>> looks similarly sparse, with the package arriving just today.
>>
>> Of course, I'll keep you posted. Thanks.
>>
>> On Wed, Oct 30, 2019, 7:32 PM Kevin A. 
>> wrote:
>>
>>> I see that on my end as well. I do not send packages to the UK often, so
>>> I can't comment on whether this is normal or not. I did just submit a
>>> formal search request for this package through the USPS website and I'm
>>> calling USPS now. As it is after business hours, if I cannot reach anyone
>>> tonight I'll place another call tomorrow early in the day.
>>>
>>> I'll keep you posted with any updates. Worst case, if it is determined
>>> to be completely lost I can recover the insured value and send you another
>>> package (with a different carrier).
>>>
>>> Thanks,
>>> Kevin
>>>
>>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales 
>>> wrote:
>>>
 Thank you. Oddly USPS has it as having left London Heathrow on the
 24th, no updates since. The UK handler Parcel force confirmed that it has
 not been scanned into their network ☹️

 --
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 Groups "neonixie-l" group.
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 .

>>> --
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Hopefully all packages arrive safely to their respective owners! I'm
keeping a close eye on your tracking; you will recieve your order one way
or another.

On Thu, Oct 31, 2019, 4:07 PM Richard Scales 
wrote:

> I got my friend in Hongkong to place an order from the second batch and
> his have just arrived in HK, I suspect he might be seeing his before I see
> mine!
>
>
> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>>
>> After a lengthy phone conversation with USPS representatives, they
>> submitted an internal request for an update on the package. Hopefully it is
>> still in transit to you, and maybe forewent some local scans in the UK. I
>> shipped another unit to Australia the same week and the tracking history
>> looks similarly sparse, with the package arriving just today.
>>
>> Of course, I'll keep you posted. Thanks.
>>
>> On Wed, Oct 30, 2019, 7:32 PM Kevin A. 
>> wrote:
>>
>>> I see that on my end as well. I do not send packages to the UK often, so
>>> I can't comment on whether this is normal or not. I did just submit a
>>> formal search request for this package through the USPS website and I'm
>>> calling USPS now. As it is after business hours, if I cannot reach anyone
>>> tonight I'll place another call tomorrow early in the day.
>>>
>>> I'll keep you posted with any updates. Worst case, if it is determined
>>> to be completely lost I can recover the insured value and send you another
>>> package (with a different carrier).
>>>
>>> Thanks,
>>> Kevin
>>>
>>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales 
>>> wrote:
>>>
 Thank you. Oddly USPS has it as having left London Heathrow on the
 24th, no updates since. The UK handler Parcel force confirmed that it has
 not been scanned into their network ☹️

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 .

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

I got my friend in Hongkong to place an order from the second batch and his 
have just arrived in HK, I suspect he might be seeing his before I see mine!


On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote:
>
> After a lengthy phone conversation with USPS representatives, they 
> submitted an internal request for an update on the package. Hopefully it is 
> still in transit to you, and maybe forewent some local scans in the UK. I 
> shipped another unit to Australia the same week and the tracking history 
> looks similarly sparse, with the package arriving just today.
>
> Of course, I'll keep you posted. Thanks. 
>
> On Wed, Oct 30, 2019, 7:32 PM Kevin A.  > wrote:
>
>> I see that on my end as well. I do not send packages to the UK often, so 
>> I can't comment on whether this is normal or not. I did just submit a 
>> formal search request for this package through the USPS website and I'm 
>> calling USPS now. As it is after business hours, if I cannot reach anyone 
>> tonight I'll place another call tomorrow early in the day. 
>>
>> I'll keep you posted with any updates. Worst case, if it is determined to 
>> be completely lost I can recover the insured value and send you another 
>> package (with a different carrier). 
>>
>> Thanks,
>> Kevin
>>
>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales > > wrote:
>>
>>> Thank you. Oddly USPS has it as having left London Heathrow on the 24th, 
>>> no updates since. The UK handler Parcel force confirmed that it has not 
>>> been scanned into their network ☹️
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neoni...@googlegroups.com .
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/17eda207-03b3-4ad0-b178-d187660e2b27%40googlegroups.com
>>> .
>>>
>>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Much appreciated, thank you very much.Sent from my Huawei phone Original Message Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supplyFrom: "Kevin A." To: neonixie-l CC: After a lengthy phone conversation with USPS representatives, they submitted an internal request for an update on the package. Hopefully it is still in transit to you, and maybe forewent some local scans in the UK. I shipped another unit to Australia the same week and the tracking history looks similarly sparse, with the package arriving just today.Of course, I'll keep you posted. Thanks. On Wed, Oct 30, 2019, 7:32 PM Kevin A.  wrote:I see that on my end as well. I do not send packages to the UK often, so I can't comment on whether this is normal or not. I did just submit a formal search request for this package through the USPS website and I'm calling USPS now. As it is after business hours, if I cannot reach anyone tonight I'll place another call tomorrow early in the day. I'll keep you posted with any updates. Worst case, if it is determined to be completely lost I can recover the insured value and send you another package (with a different carrier). Thanks,KevinOn Wed, Oct 30, 2019, 7:13 PM Richard Scales  wrote:Thank you. Oddly USPS has it as having left London Heathrow on the 24th, no updates since. The UK handler Parcel force confirmed that it has not been scanned into their network ☹️

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

After a lengthy phone conversation with USPS representatives, they
submitted an internal request for an update on the package. Hopefully it is
still in transit to you, and maybe forewent some local scans in the UK. I
shipped another unit to Australia the same week and the tracking history
looks similarly sparse, with the package arriving just today.

Of course, I'll keep you posted. Thanks.

On Wed, Oct 30, 2019, 7:32 PM Kevin A. 
wrote:

> I see that on my end as well. I do not send packages to the UK often, so I
> can't comment on whether this is normal or not. I did just submit a formal
> search request for this package through the USPS website and I'm calling
> USPS now. As it is after business hours, if I cannot reach anyone tonight
> I'll place another call tomorrow early in the day.
>
> I'll keep you posted with any updates. Worst case, if it is determined to
> be completely lost I can recover the insured value and send you another
> package (with a different carrier).
>
> Thanks,
> Kevin
>
> On Wed, Oct 30, 2019, 7:13 PM Richard Scales 
> wrote:
>
>> Thank you. Oddly USPS has it as having left London Heathrow on the 24th,
>> no updates since. The UK handler Parcel force confirmed that it has not
>> been scanned into their network ☹️
>>
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>> .
>>
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

I see that on my end as well. I do not send packages to the UK often, so I
can't comment on whether this is normal or not. I did just submit a formal
search request for this package through the USPS website and I'm calling
USPS now. As it is after business hours, if I cannot reach anyone tonight
I'll place another call tomorrow early in the day.

I'll keep you posted with any updates. Worst case, if it is determined to
be completely lost I can recover the insured value and send you another
package (with a different carrier).

Thanks,
Kevin

On Wed, Oct 30, 2019, 7:13 PM Richard Scales 
wrote:

> Thank you. Oddly USPS has it as having left London Heathrow on the 24th,
> no updates since. The UK handler Parcel force confirmed that it has not
> been scanned into their network ☹️
>
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> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Thank you. Oddly USPS has it as having left London Heathrow on the 24th, no 
updates since. The UK handler Parcel force confirmed that it has not been 
scanned into their network ☹️

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

I've got mine!  Great stuff!  I had it last weekend.

Thanks,

Bill

On Wed, Oct 30, 2019, 3:43 PM Richard Scales 
wrote:

> USPS says package arrived UK six days ago, no update since and no package
> Would you be able to check from your end?
>
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> .
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Sorry about the delay; I'll follow up with USPS tomorrow.

On Wed, Oct 30, 2019, 6:43 PM Richard Scales 
wrote:

> USPS says package arrived UK six days ago, no update since and no package
> Would you be able to check from your end?
>
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> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

USPS says package arrived UK six days ago, no update since and no package 
Would you be able to check from your end?

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Gentlemen,

Looking forward to your feedback once you've had the chance to receive and 
check out your new units. Domestic orders have arrived; international 
orders are still on their way. 

I've gotten more demand than originally expected; next batch will be made 
this week and ready to go on Monday; 2 of 6 have already been accounted 
for, so there are 4 available units coming if anyone else is interested!

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Looks great Kevin!

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

I have some boards in stock for the initial orders which I am assembling;
I'll see if there are any left at the end of this batch (20 total; 5 of
which are already accounted for, with more requests on tindie).

On Thu, Oct 17, 2019, 2:15 PM 'Dave' via neonixie-l <
neonixie-l@googlegroups.com> wrote:

>
> Are you sharing your board designs as open source?
> Or will you sell bare PCBs??
>
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> 
> .
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[neonixie-l] Re: Homebrew high voltage nixie power supply

['Dave' via neonixie-l]

Are you sharing your board designs as open source?
Or will you sell bare PCBs??

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Good parts and lots of copper = good power!

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

It looks really cool with the coils that way too!  I know it's superficial but 
it does look good.

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

I thought it was a needed thing and you made it happen!  I really didn't prefer 
the idea a having to use multiple power supplies for one project... This solves 
the problem!  Thanks Kevin!

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Thank you!

The first 5 went quickly. I'll have these shipped by the weekend, and work
on getting more!

On Wed, Oct 16, 2019, 7:46 PM Bill Notfaded  wrote:

> Just bought mine Kevin!
>
> Bill
>
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Just bought mine Kevin!

Bill

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Got it! Thanks.

On Wed, Oct 16, 2019, 6:03 PM Richard Scales  wrote:

> Order placed!
>
> On Wed, 16 Oct 2019, 22:15 Kevin A., 
> wrote:
>
>> Recieved the order. Thanks!
>>
>> On Wed, Oct 16, 2019, 5:13 PM Jon Jackson  wrote:
>>
>>> Working now...
>>>
>>> On Wed, Oct 16, 2019 at 3:04 PM Jon Jackson  wrote:
>>>
 I live in the U.S.  I'm getting a Tindie error as shown in this
 screenshot:

 [image: image.png]

 Jon J.


 On Wed, Oct 16, 2019 at 1:35 PM Kevin A. 
 wrote:

> Design is up for sale on Tindie! I have enough parts to make 6 as of
> now. If there is a larger demand, I'm keen to buying more.
>
>
> https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/
>
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Order placed!

On Wed, 16 Oct 2019, 22:15 Kevin A.,  wrote:

> Recieved the order. Thanks!
>
> On Wed, Oct 16, 2019, 5:13 PM Jon Jackson  wrote:
>
>> Working now...
>>
>> On Wed, Oct 16, 2019 at 3:04 PM Jon Jackson  wrote:
>>
>>> I live in the U.S.  I'm getting a Tindie error as shown in this
>>> screenshot:
>>>
>>> [image: image.png]
>>>
>>> Jon J.
>>>
>>>
>>> On Wed, Oct 16, 2019 at 1:35 PM Kevin A. 
>>> wrote:
>>>
 Design is up for sale on Tindie! I have enough parts to make 6 as of
 now. If there is a larger demand, I'm keen to buying more.


 https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/

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 .

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Recieved the order. Thanks!

On Wed, Oct 16, 2019, 5:13 PM Jon Jackson  wrote:

> Working now...
>
> On Wed, Oct 16, 2019 at 3:04 PM Jon Jackson  wrote:
>
>> I live in the U.S.  I'm getting a Tindie error as shown in this
>> screenshot:
>>
>> [image: image.png]
>>
>> Jon J.
>>
>>
>> On Wed, Oct 16, 2019 at 1:35 PM Kevin A. 
>> wrote:
>>
>>> Design is up for sale on Tindie! I have enough parts to make 6 as of
>>> now. If there is a larger demand, I'm keen to buying more.
>>>
>>>
>>> https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/
>>>
>>> --
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>>> 
>>> .
>>>
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Jon Jackson]

Working now...

On Wed, Oct 16, 2019 at 3:04 PM Jon Jackson  wrote:

> I live in the U.S.  I'm getting a Tindie error as shown in this screenshot:
>
> [image: image.png]
>
> Jon J.
>
>
> On Wed, Oct 16, 2019 at 1:35 PM Kevin A. 
> wrote:
>
>> Design is up for sale on Tindie! I have enough parts to make 6 as of now.
>> If there is a larger demand, I'm keen to buying more.
>>
>>
>> https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/
>>
>> --
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>> 
>> .
>>
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Hi Jon,

Just fixed it. You should be all set!

Thanks,
Kevin


On Wed, Oct 16, 2019, 5:05 PM Jon Jackson  wrote:

> I live in the U.S.  I'm getting a Tindie error as shown in this screenshot:
>
> [image: image.png]
>
> Jon J.
>
>
> On Wed, Oct 16, 2019 at 1:35 PM Kevin A. 
> wrote:
>
>> Design is up for sale on Tindie! I have enough parts to make 6 as of now.
>> If there is a larger demand, I'm keen to buying more.
>>
>>
>> https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/
>>
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>> .
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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Jon Jackson]

I live in the U.S.  I'm getting a Tindie error as shown in this screenshot:

[image: image.png]

Jon J.


On Wed, Oct 16, 2019 at 1:35 PM Kevin A. 
wrote:

> Design is up for sale on Tindie! I have enough parts to make 6 as of now.
> If there is a larger demand, I'm keen to buying more.
>
>
> https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/
>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Design is up for sale on Tindie! I have enough parts to make 6 as of now.
If there is a larger demand, I'm keen to buying more.

https://www.tindie.com/products/nexus/40-watt-high-voltage-nixie-power-supply/

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Count me in Kevin... you put really nice parts into this too which I like!  
That's a decent amount of copper too!  It won't be cheap but nothing really 
good ever is.

Bill

On Monday, October 14, 2019 at 9:06:50 PM UTC-7, Kevin A. wrote:
>
> Update: new design fabricated and works! See: 
> https://neonkev.com/2019/10/15/success-201-boost-at-40-watts-without-a-transformer/
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Following this with eager anticipation - no pressure at all but I just 
designed the housing for my ZM1350 project built around your PSU. Seriously 
- no pressure at all - just let us know when we can place orders. 
Great work!


On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>
> Just wanted to share a nixie related project I've been working on for a 
> few weeks now. I've got the boards ordered for my latest revision. Looking 
> for any feedback and to see if this interests anyone. 
>
>
> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>
> Since I got into nixies, I've found that good high voltage power supplies 
> are a major asset to any successful design. Instead of relying on Chinese 
> eBay stuff or other unsustainable sources, I wanted to build my own using 
> the latest in boost controllers and high power semiconductors in addition 
> to using the highest quality, brand name components in the actual 
> construction the supply. It's not a design built down to the lowest cost 
> but one built for silent, reliable, and continuous low-ripple operation at 
> rated power. 
>
> This will be made open source once I've matured it to a reasonable degree. 
> I hope that the latest revision will prove satisfactory. 
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

That's awesome I like the website too really neat!

Bill

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Update: new design fabricated and works! See: 
https://neonkev.com/2019/10/15/success-201-boost-at-40-watts-without-a-transformer/

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Those images are great, I'll work to those dimensions remembering to allow 
for suitable standoffs etc. Please keep us posted regarding developments.


On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>
> Just wanted to share a nixie related project I've been working on for a 
> few weeks now. I've got the boards ordered for my latest revision. Looking 
> for any feedback and to see if this interests anyone. 
>
>
> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>
> Since I got into nixies, I've found that good high voltage power supplies 
> are a major asset to any successful design. Instead of relying on Chinese 
> eBay stuff or other unsustainable sources, I wanted to build my own using 
> the latest in boost controllers and high power semiconductors in addition 
> to using the highest quality, brand name components in the actual 
> construction the supply. It's not a design built down to the lowest cost 
> but one built for silent, reliable, and continuous low-ripple operation at 
> rated power. 
>
> This will be made open source once I've matured it to a reasonable degree. 
> I hope that the latest revision will prove satisfactory. 
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

The dimensions of the board are currently 3.81 x 2.20 inches. The tallest
components are 1.3" which are the inductors.

I will provide some 3D images with dimensions when I get home this evening.

On Tue, Oct 8, 2019, 11:48 AM Richard Scales 
wrote:

> Are you in any position to suggest maximum dimensions of a completed unit
> yet? No pressure whatsoever but I am just in the throws of designing a
> housing for a clock that has your power supply firmly in its sights and was
> wondering particularly what the maximum height of the constructed power
> supply might be?
> Kind regards
> Richard
>
>
>
> On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>>
>> Just wanted to share a nixie related project I've been working on for a
>> few weeks now. I've got the boards ordered for my latest revision. Looking
>> for any feedback and to see if this interests anyone.
>>
>>
>> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>>
>> Since I got into nixies, I've found that good high voltage power supplies
>> are a major asset to any successful design. Instead of relying on Chinese
>> eBay stuff or other unsustainable sources, I wanted to build my own using
>> the latest in boost controllers and high power semiconductors in addition
>> to using the highest quality, brand name components in the actual
>> construction the supply. It's not a design built down to the lowest cost
>> but one built for silent, reliable, and continuous low-ripple operation at
>> rated power.
>>
>> This will be made open source once I've matured it to a reasonable
>> degree. I hope that the latest revision will prove satisfactory.
>>
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> 
> .
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Are you in any position to suggest maximum dimensions of a completed unit 
yet? No pressure whatsoever but I am just in the throws of designing a 
housing for a clock that has your power supply firmly in its sights and was 
wondering particularly what the maximum height of the constructed power 
supply might be?
Kind regards
Richard



On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>
> Just wanted to share a nixie related project I've been working on for a 
> few weeks now. I've got the boards ordered for my latest revision. Looking 
> for any feedback and to see if this interests anyone. 
>
>
> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>
> Since I got into nixies, I've found that good high voltage power supplies 
> are a major asset to any successful design. Instead of relying on Chinese 
> eBay stuff or other unsustainable sources, I wanted to build my own using 
> the latest in boost controllers and high power semiconductors in addition 
> to using the highest quality, brand name components in the actual 
> construction the supply. It's not a design built down to the lowest cost 
> but one built for silent, reliable, and continuous low-ripple operation at 
> rated power. 
>
> This will be made open source once I've matured it to a reasonable degree. 
> I hope that the latest revision will prove satisfactory. 
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

I am properly excited by the work that you are doing and am looking forward 
to it's formal release.
I'll take a couple in the UK please - and if anyone else in the UK would 
like to combine shipping etc - PM me.
Keep up the good work.
RIchard



On Friday, 27 September 2019 22:50:31 UTC+1, Kevin A. wrote:
>
> I 
> 've
>  
> published another post covering changes and further refinement to the 
> design: 
> https://neonkev.com/2019/09/27/40-watt-boost-converter-running-into-physics/
>
> With another Digikey order on the way, hopefully my next tweaks will get 
> me down to 12 volts! If not, the design is still perfectly functional 
> as-is, and I expect to be releasing it before the end of the year. 
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Looks great Kevin... nice work!

Bill

On Fri, Sep 27, 2019, 2:50 PM Kevin A. 
wrote:

> I
> 've
> published another post covering changes and further refinement to the
> design:
> https://neonkev.com/2019/09/27/40-watt-boost-converter-running-into-physics/
>
> With another Digikey order on the way, hopefully my next tweaks will get
> me down to 12 volts! If not, the design is still perfectly functional
> as-is, and I expect to be releasing it before the end of the year.
>
> --
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> 
> .
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

I 
've
 
published another post covering changes and further refinement to the 
design: 
https://neonkev.com/2019/09/27/40-watt-boost-converter-running-into-physics/

With another Digikey order on the way, hopefully my next tweaks will get me 
down to 12 volts! If not, the design is still perfectly functional as-is, 
and I expect to be releasing it before the end of the year. 

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

12v or 24v are both good for me, as you say, 24v to 12v conversion (or whatever 
voltage you need for logic and associated circuits) is easily accomplished. I 
am looking forward the next installment!

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Either way like you said 24V could also be doable.  Great work!

On Sat, Sep 21, 2019, 11:59 PM Kevin A. 
wrote:

> Out of curiosity I'm going to try changing the switching frequency and
> increasing the inductance, with the aim of meeting my original goal of full
> output at 12 volts. Can't hurt to try.
>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Out of curiosity I'm going to try changing the switching frequency and
increasing the inductance, with the aim of meeting my original goal of full
output at 12 volts. Can't hurt to try.

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Sounds great!  I have some 18v supplies as well.

Bill

On Sat, Sep 21, 2019, 7:13 PM Kevin A. 
wrote:

> And to be clear, it does run at 12 volts as well. However, the controller
> will turn the HV off at around 110-130 milliamps as the inductor duty cycle
> approaches 100%.
>
> On Saturday, September 21, 2019 at 10:07:07 PM UTC-4, Kevin A. wrote:
>>
>> Update:
>>
>> A quick test shows that the 40 watt version works! It turns out, however,
>> that 12 volts in is a bit too low for this design at this power level. By
>> upping the input voltage to 24 volts (which is reasonable - there are
>> plenty of cheap 24 volt wall warts as well), the design functioned as
>> intended (all components within rated spec at 24 volts as well). Output
>> across a fixed 876 ohm load settled at 179 volt ~201 milliamps for a 24
>> volt 1.65 amp input, which translates to 91% efficiency. There really isn't
>> any practical benefit to running at 12 volts with double the input current.
>> Efficiency would drop and heat would increase throughout the circuit to
>> attain the same power.
>>
>> If any clocks or systems out there need a lower operating voltage and you
>> want to run off of one power input, I can add 24 volt breakouts for your
>> own DC-DC converter. A second option would be to build in a second switcher
>> to step the input 24 volts down to an adjustable voltage between 1.2V-24V.
>> This is fairly straightforward using a controller like the LM2576T-ADJ. It
>> will, however, increase size and cost (current size is 3.3 inches x 2.1
>> inches).
>>
>> I want to perform some thermal testing when I have access to my infrared
>> camera this week as well. I did some poking around to see what was warm
>> after the supply was turned off. As expected, the transistor and diode did
>> produce some heat, but they were only warm to touch. My 100 watt load
>> resistor, however, was getting pretty warm!
>>
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> 
> .
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

And to be clear, it does run at 12 volts as well. However, the controller 
will turn the HV off at around 110-130 milliamps as the inductor duty cycle 
approaches 100%. 

On Saturday, September 21, 2019 at 10:07:07 PM UTC-4, Kevin A. wrote:
>
> Update:
>
> A quick test shows that the 40 watt version works! It turns out, however, 
> that 12 volts in is a bit too low for this design at this power level. By 
> upping the input voltage to 24 volts (which is reasonable - there are 
> plenty of cheap 24 volt wall warts as well), the design functioned as 
> intended (all components within rated spec at 24 volts as well). Output 
> across a fixed 876 ohm load settled at 179 volt ~201 milliamps for a 24 
> volt 1.65 amp input, which translates to 91% efficiency. There really isn't 
> any practical benefit to running at 12 volts with double the input current. 
> Efficiency would drop and heat would increase throughout the circuit to 
> attain the same power. 
>
> If any clocks or systems out there need a lower operating voltage and you 
> want to run off of one power input, I can add 24 volt breakouts for your 
> own DC-DC converter. A second option would be to build in a second switcher 
> to step the input 24 volts down to an adjustable voltage between 1.2V-24V. 
> This is fairly straightforward using a controller like the LM2576T-ADJ. It 
> will, however, increase size and cost (current size is 3.3 inches x 2.1 
> inches). 
>
> I want to perform some thermal testing when I have access to my infrared 
> camera this week as well. I did some poking around to see what was warm 
> after the supply was turned off. As expected, the transistor and diode did 
> produce some heat, but they were only warm to touch. My 100 watt load 
> resistor, however, was getting pretty warm!
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Hello and thank you for your speedy response, that all sounds perfect then. Please keep me posted on developments, I shall follow this thread.Kind regardsRichardSent from my Huawei phone Original Message Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power supplyFrom: "Kevin A." To: neonixie-l CC: Hi Richard,Thanks for the interest. Yes, there is a logic controlled enable/disable which can switch the high voltage output on and off. In normal operation, there is an internal pull-down on this pin in the controller IC to keep the output on. If this pin is pulled above 1.2 volts, it will signal the controller to turn the output off. The maximum voltage permitted on this pin is 10 volts. I will include a terminal block for easy access to this feature.The difference between 170 and 180 volts should not require an additional resistor on R31. Looking at the smartsocket cathode resistor values for each segment, they are the same as those used in the mod-six 7971 clock, which operates without issue with 180 volts at the anode. The ~6% increase in power dissipated between 170v and 180v is minor and will not noticeably affect the longevity of the tubes or driving electronics. I've never sent a package overseas, but I could certainly try! Hopefully customs doesn't panick at the sight of mysterious circuit boards. Thank you,KevinOn Sun, Sep 8, 2019, 11:43 PM Richard Scales  wrote:Please could you add me to the list of interested parties. I have some projects based on B-7971 and ZM1350 and would really appreciate it if i could use power supplies that were within spec for what I want to do.These projects include 6, 8 and 10 tube variations.Please could you confirm whether or not you include a logic driven enable/disable (I did see EN1 on the picture of the PCB on your project site). Also, am I right in thinking that to drive smart-sockets from 180V as opposed to 170V there needs to be a change in the value of the common anode resistor R31 (from a link to some resistance that deals with the slight increase in supply voltage)?I am in the UK - I hope that isn't a show stopper!Kind regardsRichardOn Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A.  wrote:Just wanted to share a nixie related project I've been working on for a few weeks now. I've got the boards ordered for my latest revision. Looking for any feedback and to see if this interests anyone. https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/Since I got into nixies, I've found that good high voltage power supplies are a major asset to any successful design. Instead of relying on Chinese eBay stuff or other unsustainable sources, I wanted to build my own using the latest in boost controllers and high power semiconductors in addition to using the highest quality, brand name components in the actual construction the supply. It's not a design built down to the lowest cost but one built for silent, reliable, and continuous low-ripple operation at rated power. This will be made open source once I've matured it to a reasonable degree. I hope that the latest revision will prove satisfactory. 



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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Jon D.]

Kevin,

Please add me to the list of those interested as well.  I, too, have some 
B-7971 and ZM1350 Smartsocket projects in mind with 6-10 tubes each.

Jon J.

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Hi Richard,

Thanks for the interest. Yes, there is a logic controlled enable/disable
which can switch the high voltage output on and off. In normal operation,
there is an internal pull-down on this pin in the controller IC to keep the
output on. If this pin is pulled above 1.2 volts, it will signal the
controller to turn the output off. The maximum voltage permitted on this
pin is 10 volts. I will include a terminal block for easy access to this
feature.

The difference between 170 and 180 volts should not require an additional
resistor on R31. Looking at the smartsocket cathode resistor values for
each segment, they are the same as those used in the mod-six 7971 clock,
which operates without issue with 180 volts at the anode. The ~6% increase
in power dissipated between 170v and 180v is minor and will not noticeably
affect the longevity of the tubes or driving electronics.

I've never sent a package overseas, but I could certainly try! Hopefully
customs doesn't panick at the sight of mysterious circuit boards.

Thank you,
Kevin

On Sun, Sep 8, 2019, 11:43 PM Richard Scales 
wrote:

> Please could you add me to the list of interested parties. I have some
> projects based on B-7971 and ZM1350 and would really appreciate it if i
> could use power supplies that were within spec for what I want to do.
>
> These projects include 6, 8 and 10 tube variations.
>
> Please could you confirm whether or not you include a logic driven
> enable/disable (I did see EN1 on the picture of the PCB on your project
> site). Also, am I right in thinking that to drive smart-sockets from 180V
> as opposed to 170V there needs to be a change in the value of the common
> anode resistor R31 (from a link to some resistance that deals with the
> slight increase in supply voltage)?
>
> I am in the UK - I hope that isn't a show stopper!
>
> Kind regards
>
> Richard
>
>
>
> On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>>
>> Just wanted to share a nixie related project I've been working on for a
>> few weeks now. I've got the boards ordered for my latest revision. Looking
>> for any feedback and to see if this interests anyone.
>>
>>
>> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>>
>> Since I got into nixies, I've found that good high voltage power supplies
>> are a major asset to any successful design. Instead of relying on Chinese
>> eBay stuff or other unsustainable sources, I wanted to build my own using
>> the latest in boost controllers and high power semiconductors in addition
>> to using the highest quality, brand name components in the actual
>> construction the supply. It's not a design built down to the lowest cost
>> but one built for silent, reliable, and continuous low-ripple operation at
>> rated power.
>>
>> This will be made open source once I've matured it to a reasonable
>> degree. I hope that the latest revision will prove satisfactory.
>>
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> 
> .
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Richard Scales]

Please could you add me to the list of interested parties. I have some 
projects based on B-7971 and ZM1350 and would really appreciate it if i 
could use power supplies that were within spec for what I want to do.

These projects include 6, 8 and 10 tube variations.

Please could you confirm whether or not you include a logic driven 
enable/disable (I did see EN1 on the picture of the PCB on your project 
site). Also, am I right in thinking that to drive smart-sockets from 180V 
as opposed to 170V there needs to be a change in the value of the common 
anode resistor R31 (from a link to some resistance that deals with the 
slight increase in supply voltage)?

I am in the UK - I hope that isn't a show stopper!

Kind regards

Richard



On Sunday, 18 August 2019 06:18:20 UTC+1, Kevin A. wrote:
>
> Just wanted to share a nixie related project I've been working on for a 
> few weeks now. I've got the boards ordered for my latest revision. Looking 
> for any feedback and to see if this interests anyone. 
>
>
> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>
> Since I got into nixies, I've found that good high voltage power supplies 
> are a major asset to any successful design. Instead of relying on Chinese 
> eBay stuff or other unsustainable sources, I wanted to build my own using 
> the latest in boost controllers and high power semiconductors in addition 
> to using the highest quality, brand name components in the actual 
> construction the supply. It's not a design built down to the lowest cost 
> but one built for silent, reliable, and continuous low-ripple operation at 
> rated power. 
>
> This will be made open source once I've matured it to a reasonable degree. 
> I hope that the latest revision will prove satisfactory. 
>

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Thanks Neil. I'm working on getting this new transistor design up and 
running within the next two weeks. For my own sake, I can make the 20 watt 
and 40 watt versions use the same topology (since the major differences are 
limited to the transistor and input protection fuse). Current limiting for 
the specific application can also be adjusted by changing the current sense 
resistor, as the TPS40211 is a current mode controller. Stay tuned! 

On Saturday, September 7, 2019 at 4:28:52 AM UTC-4, Neil wrote:
>
> Very impressive write up Kevin. Like Bill, the first thing that came to 
> mind was “can I get one?”. I’ve started the resurrection of an unfinished 8 
> x ZM1350 SmartSocket project and had just done the power supply calculation 
> and realised I needed 8x roughly 14mA = 112mA for all segments on. I don’t 
> plan on that happening much if ever but am going to use two Taylor 
> supplies. This should mean I can cover that worst case, while having loads 
> of margin and hopefully cool running for normal operation. I look forward 
> to following your progress with the 20w supply and if you do eventually 
> have any for sale I may be interested.

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[gregebert]

Budget about 4 watts per tube (b7971); 160 volts at 25mA is slightly above 
the max recommended current per the datasheet.
Also be aware that you will need to deal with the generated heat from these 
tubes, if they are in a fully-enclosed case. Vent holes on the top and 
bottom should suffice; convection will handle it from there.

They actually do get slightly warm after a few minutes of use, but not at 
all hot like vacuum tubes such as radio/TV/stereo.

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Kevin-

I know just the place to get the 12V power supply supplies.  I regularly
buy 3A for most things so I have usually more than enough power.  The same
seller I buy from has a 5A as well.  I've found the price is good for US
distributer.  He markets them as 5050 LED strip power supplies.  I've never
had a problem with them and they're cheaper than anywhere else I've found
and he ships usually the day I order them.
They come in these sizes all 12V:

1A/12W
2A/24W
3A/36W
5A/60W
6A/72W
8A/96W
10A/120W
15A/180W
20A/240W
25A/300W
30A/360W
40A/480W
50A/600W

He gives me quantity discounts too.

Best Regards,

Bill
On Fri, Sep 6, 2019, 7:33 PM Kevin A.  wrote:

> Here's what I was thinking. Major difference from the 20 watt version is
> the main switching MOSFET, which is over twice as beefy. The inductor I
> used on the 20 watt was overkill so this should take better advantage of
> it. Size is the same as before; practice makes perfect!
>
> You'll also need a 5 amp 12 volt adapter to get the kind of juice you're
> looking for out of this thing!
>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Take your time.  No rush at all.  I've got 10 projects going and more on
the way.  I love this stuff.  It helps keep me sane from other real work
work.

Bill

On Fri, Sep 6, 2019, 2:16 PM Kevin A.  wrote:

> Let me see what I can do. I have some ideas about how a 40 watt version
> would be possible without too many tweaks. I'll take a stab at that if
> you're not in a rush.
>
> On Fri, Sep 6, 2019, 4:22 PM Bill Notfaded  wrote:
>
>> So maybe two of your supplies then for 10 smartsockets?  That's better
>> than possibly 5 Taylor... at least that's how I see it!
>>
>> Bill
>>
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>> 
>> .
>>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Kevin A.]

Let me see what I can do. I have some ideas about how a 40 watt version
would be possible without too many tweaks. I'll take a stab at that if
you're not in a rush.

On Fri, Sep 6, 2019, 4:22 PM Bill Notfaded  wrote:

> So maybe two of your supplies then for 10 smartsockets?  That's better
> than possibly 5 Taylor... at least that's how I see it!
>
> Bill
>
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> 
> .
>

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Re: [neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

So maybe two of your supplies then for 10 smartsockets?  That's better than 
possibly 5 Taylor... at least that's how I see it!

Bill

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

I might like one of you big 20 Watt versions to drive my longer B-7971 
smartsocket array... as it is now it's requires multiple Taylor supplies.  
For safety I've not been eager to drive more than 2 or 3 tubes per Taylor 
supply.  If you add up powering all the segments from the datasheet it 
looks like many people exceed the specs or just assume they won't light all 
the segments on all the tubes at once?  So this means using 4 or 5 Taylor 
power supplies for a longer smartsocket array.

Regards,

Bill

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[neonixie-l] Re: Homebrew high voltage nixie power supply

[Bill Notfaded]

Looks good Kevin... 10 WATTS is some juice!

Bill

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