date:20200624

Re: [neonixie-l] What is this HV gadget?

2020-06-24 Thread Ice cruncher

With a single probe. My best guess just an oudin coil

Used often times on argon, krypton and HeNe lasers. If tube lights up it is 
still gas intact otherwise it’s open to air

 But that is a guess



Sent from my iPad

>> On Jun 24, 2020, at 4:32 PM, Mac Doktor  wrote:
> https://www.ebay.com/itm/184339010355
> 
> 
> It looks like it was designed for some other purpose and may be available for 
> less elsewhere.
> 
> 
> Terry Bowman, KA4HJH
> "The Mac Doctor”
> 
> "Never install version point-zero of anything"
> 
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Re: [neonixie-l] Re: What is this HV gadget?

2020-06-24 Thread Mac Doktor


> On Jun 24, 2020, at 4:48 PM, Dekatron42  wrote:
> 
> I think it is called "high frequency neon tester", google it and you'll se 
> some similar items.

Bingo. It's a bit shabbier than the much more expensive handheld Tesla coil we 
used in neon school but the price is hard to beat. Ordered.


Terry Bowman, KA4HJH
"The Mac Doctor”

"Never install version point-zero of anything"

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[neonixie-l] Re: What is this HV gadget?

2020-06-24 Thread gregebert

I assume it's high-voltage+high-frequency intended to ionize gas in a tube 
being tested for leaks.
More convenient than lugging your plasma globe around at swap meets, etc.

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[neonixie-l] Re: What is this HV gadget?

2020-06-24 Thread Dekatron42

I think it is called "high frequency neon tester", google it and you'll se 
some similar items.

/Martin

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[neonixie-l] What is this HV gadget?

2020-06-24 Thread Mac Doktor

https://www.ebay.com/itm/184339010355 


It looks like it was designed for some other purpose and may be available for 
less elsewhere.


Terry Bowman, KA4HJH
"The Mac Doctor”

"Never install version point-zero of anything"

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread MrThe50sanchez .

I really appreciate your time for helping me with this,

Going to start making change's, learning, and I will tell you I im doing.

Thanks a lot 落

El mié., 24 jun. 2020 a las 18:39, Kevin A. ()
escribió:

> lets start with problems with the low voltage part of your board. your
> input power and ground are running through long, skinny traces. this is not
> good... you want to minimize the L and R in these parts of the board.
>
> Start with making the bottom layer of the board one big ground plane. Just
> make sure to add a keepout zone below the transformer. See the example in
> the picture below from my design. This should make sure every circuit that
> is connect to ground has a low impedance path which will help minimize
> ground problems.
>
> Next I would suggest paying special attention to your power traces.
> Especially the low voltage/high current path. Try to "visualize" where the
> current is going, and how much current is actually flowing through
> different parts of the board. I tried to illustrate the low voltage
> currents on the top copper layer in yellow, and the high voltage in blue.
>
> Remember than in a switching power supply, these currents are being turned
> on and off rapidly. The strong magnetic fields associated with this can
> interfere with your feedback circuitry and other small signals on the
> board. Try to keep the small signals away from the transformer and the
> large power traces.
>
> And remember... the copper is essentially "free". Circuit boards typically
> made by etching copper away... so you're paying for it any which way. Use
> as much of it as possible!
>
> Lets see what you come up with.
>
> On Wed, Jun 24, 2020 at 12:14 PM Kevin A. 
> wrote:
>
>> I've also been designing some nixie flyback power supplies lately. I will
>> do a full writeup on my website of the project when the project is
>> complete.
>>
>> I recommend these tools because I have experience with them and they
>> work!
>>
>> On Tue, Jun 23, 2020 at 4:22 PM MrThe50sanchez 
>> wrote:
>>
>>>
>>> Hello Again, hope everyone is good!
>>>
>>> I was trying to make a DC-DC booster converter using the LT1308B/A
>>> device, I made a PCB for it, doing the same as the datasheet of this device
>>> says, but  I don´t get the High Votage, and that`s
>>> why im here asking for help, I tried a lot of things put don`t know what
>>> it can be.
>>>
>>> This is the schematic I use  (This one is from the datasheet) :
>>>
>>>
>>> The PCB I made is the same as this schematic and using the same
>>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>>>
>>> *Any Ideas of what I can do to find what is going wrong?*
>>>
>>> *I have LBI and LB0 from the LT1308 Device not connected to anything.
>>> */SHDN pin is connected to Vin, Positive Voltage to It works.
>>> *Because I want 180V output voltage I have resistor from FB R1 = 47K and
>>> R2 = 300 Ohm to get 1,21V Feedback.
>>> *The capacitors Im using (10nF 250v) are not electrolitic, they are
>>> normal ones.
>>>
>>>
>>> Thankss Guys!
>>>
>>> --
>>> You received this message because you are subscribed to the Google
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>>> 
>>> .
>>>
>> --
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> 
> .
>

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread MrThe50sanchez .

This is Crazy, I want to learn how to build this things.

Let's read a lot!!


El mié., 24 jun. 2020 a las 18:15, Kevin A. ()
escribió:

> I've also been designing some nixie flyback power supplies lately. I will
> do a full writeup on my website of the project when the project is
> complete.
>
> I recommend these tools because I have experience with them and they work!
>
> On Tue, Jun 23, 2020 at 4:22 PM MrThe50sanchez 
> wrote:
>
>>
>> Hello Again, hope everyone is good!
>>
>> I was trying to make a DC-DC booster converter using the LT1308B/A
>> device, I made a PCB for it, doing the same as the datasheet of this device
>> says, but  I don´t get the High Votage, and that`s
>> why im here asking for help, I tried a lot of things put don`t know what
>> it can be.
>>
>> This is the schematic I use  (This one is from the datasheet) :
>>
>>
>> The PCB I made is the same as this schematic and using the same
>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>>
>> *Any Ideas of what I can do to find what is going wrong?*
>>
>> *I have LBI and LB0 from the LT1308 Device not connected to anything.
>> */SHDN pin is connected to Vin, Positive Voltage to It works.
>> *Because I want 180V output voltage I have resistor from FB R1 = 47K and
>> R2 = 300 Ohm to get 1,21V Feedback.
>> *The capacitors Im using (10nF 250v) are not electrolitic, they are
>> normal ones.
>>
>>
>> Thankss Guys!
>>
>> --
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>> "neonixie-l" group.
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>> email to neonixie-l+unsubscr...@googlegroups.com.
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>> https://groups.google.com/d/msgid/neonixie-l/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com
>> 
>> .
>>
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> 
> .
>

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread MrThe50sanchez .

Oh F**CK yes,

I made that mistake because I putted in the wrong direction the
transformer, That`s a silly mistake.

Thanks!

El mié., 24 jun. 2020 a las 15:13, Paul Andrews () escribió:

> Also, if the datasheet shows transformer pin 6 connected to ground and pin
> 4 connected to the output. You have these swapped.
>
> On Wednesday, June 24, 2020 at 9:08:46 AM UTC-4, Paul Andrews wrote:
>>
>> Where is D4 in your circuit? It should be between the transformer pin
>> connected to SW and the transformer pin connected to ground.
>>
>> On Wednesday, June 24, 2020 at 9:06:07 AM UTC-4, MrThe50sanchez wrote:
>>>
>>> Hello !
>>>
>>> Yes, I used the components that the Datasheet says, I got it from here:
>>>
>>>
>>> The thing is, that a Triple Voltage Circuit uses electrolitic
>>> capacitors, this is not the same configuration as a voltage triple circuit,
>>> but, Can It be that the capacitors I added are not electrolitic? I just
>>> putted normal ones (SMD 10nF 250V).
>>>
>>> Thanks a Lot!
>>>
>>>
>>>
>>>
>>>
>>> El miércoles, 24 de junio de 2020, 14:49:49 (UTC+2), Paul Andrews
>>> escribió:

 Read the layout recommendations in the LT1308A datasheet. You will need
 to adapt it to this configuration.

 What is the voltage rating of the 47k resistor? What are the voltage
 ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What
 is the saturation current of the transformer?

 On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
>
> Hello! Thanks for the response!
>
> I add here again the PCB layers that Im using.
>
>
> El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:
>>
>> What does your layout look like? Show us a picture of the pcb with
>> the layers visible.
>>
>> Just the layout of the board can make or break a DC-DC converter with
>> all of the high current transients and control signals.
>>
>> On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez 
>> wrote:
>>
>>>
>>> Hello Again, hope everyone is good!
>>>
>>> I was trying to make a DC-DC booster converter using the LT1308B/A
>>> device, I made a PCB for it, doing the same as the datasheet of this 
>>> device
>>> says, but  I don´t get the High Votage, and that`s
>>> why im here asking for help, I tried a lot of things put don`t know
>>> what it can be.
>>>
>>> This is the schematic I use  (This one is from the datasheet) :
>>>
>>>
>>> The PCB I made is the same as this schematic and using the same
>>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>>>
>>> *Any Ideas of what I can do to find what is going wrong?*
>>>
>>> *I have LBI and LB0 from the LT1308 Device not connected to anything.
>>> */SHDN pin is connected to Vin, Positive Voltage to It works.
>>> *Because I want 180V output voltage I have resistor from FB R1 = 47K
>>> and R2 = 300 Ohm to get 1,21V Feedback.
>>> *The capacitors Im using (10nF 250v) are not electrolitic, they are
>>> normal ones.
>>>
>>>
>>> Thankss Guys!
>>>
>>> --
>>> 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/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com
>>> 
>>> .
>>>
>> --
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> .
>

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread MrThe50sanchez .

Thanks a Lot!

the main reason of this is learning always, love electronics, so I will
take a really good look to the link you attached.

Let´s see If I find a way to change the design to it works.

Thanks a lot I will tell you How is going on


El mié., 24 jun. 2020 a las 15:04, Kevin A. ()
escribió:

> So if you really want to make this project work, then it's probably best
> you start with a fresh layout. The PCB layout that you started with needs a
> lot of work.
>
> Believe me, I made the same mistakes when I first started designing high
> voltage power supplies. Take a look this article I wrote which describes
> how I learned about and designed a high voltage boost converter:
> https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/
>
> Your design is a flyback converter, but a lot of the same pcb design still
> applies. I'll also find some of the articles I read which really helped
> with my design.
>
> Once we have a good layout, then we can work on picking the right values
> for the feedback resistors and choosing all the other components. There is
> a bit of a learning curve but be patient, read carefully and learn, and you
> will make a working design soon enough!
>
> On Wed, Jun 24, 2020, 8:49 AM Paul Andrews  wrote:
>
>> Read the layout recommendations in the LT1308A datasheet. You will need
>> to adapt it to this configuration.
>>
>> What is the voltage rating of the 47k resistor? What are the voltage
>> ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What
>> is the saturation current of the transformer?
>>
>> On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
>>>
>>> Hello! Thanks for the response!
>>>
>>> I add here again the PCB layers that Im using.
>>>
>>>
>>> El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:

 What does your layout look like? Show us a picture of the pcb with the
 layers visible.

 Just the layout of the board can make or break a DC-DC converter with
 all of the high current transients and control signals.

 On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez 
 wrote:

>
> Hello Again, hope everyone is good!
>
> I was trying to make a DC-DC booster converter using the LT1308B/A
> device, I made a PCB for it, doing the same as the datasheet of this 
> device
> says, but  I don´t get the High Votage, and that`s
> why im here asking for help, I tried a lot of things put don`t know
> what it can be.
>
> This is the schematic I use  (This one is from the datasheet) :
>
>
> The PCB I made is the same as this schematic and using the same
> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>
> *Any Ideas of what I can do to find what is going wrong?*
>
> *I have LBI and LB0 from the LT1308 Device not connected to anything.
> */SHDN pin is connected to Vin, Positive Voltage to It works.
> *Because I want 180V output voltage I have resistor from FB R1 = 47K
> and R2 = 300 Ohm to get 1,21V Feedback.
> *The capacitors Im using (10nF 250v) are not electrolitic, they are
> normal ones.
>
>
> Thankss Guys!
>
> --
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> 
> .
>
 --
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>>
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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread 'Ian Vine' via neonixie-l

Nice. Be good to see these
CheersIan
On Wednesday, 24 June 2020, 17:44:48 BST, Kevin A.
wrote:

I've also been designing some nixie flyback power supplies lately. I will do a
full writeup on my website of the project when the project is complete.
I recommend these tools because I have experience with them and they work!
On Tue, Jun 23, 2020 at 4:22 PM MrThe50sanchez wrote:

Hello Again, hope everyone is good!

I was trying to make a DC-DC booster converter using the LT1308B/A device, I
made a PCB for it, doing the same as the datasheet of this device says, but I
don´t get the High Votage, and that`s
why im here asking for help, I tried a lot of things put don`t know what it can
be.

This is the schematic I use (This one is from the datasheet) :

The PCB I made is the same as this schematic and using the same components, Im
using a rechargable battery CR2 800mAh 3.0V Li-on.
Any Ideas of what I can do to find what is going wrong?
*I have LBI and LB0 from the LT1308 Device not connected to anything.*/SHDN pin
is connected to Vin, Positive Voltage to It works.
*Because I want 180V output voltage I have resistor from FB R1 = 47K and R2 =
300 Ohm to get 1,21V Feedback.
*The capacitors Im using (10nF 250v) are not electrolitic, they are normal
ones.

Thankss Guys!

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread Kevin A.

sanchez,

have a look at these articles by rohm semiconductor on DC-DC converter
layout: https://techweb.rohm.com/knowledge/dcdc/dcdc_pwm/dcdc_pwm03/2734

this is quite a handy guide on how to optimize the layout of your board.

since you are also using an LT part, I would also highly recommend using
LTspice (free design and simulation software from LT) to model the LT1308A
on your computer and do simulations with different resistors, capacitors,
transformers, etc...

https://www.analog.com/en/products/lt1308a.html#product-documentation

if you use these design tools you can save yourself a lot of
troubleshooting and frustration

On Wed, Jun 24, 2020 at 9:06 AM MrThe50sanchez 
wrote:

> Hello !
>
> Yes, I used the components that the Datasheet says, I got it from here:
>
>
> The thing is, that a Triple Voltage Circuit uses electrolitic capacitors,
> this is not the same configuration as a voltage triple circuit, but, Can It
> be that the capacitors I added are not electrolitic? I just
> putted normal ones (SMD 10nF 250V).
>
> Thanks a Lot!
>
>
>
>
>
> El miércoles, 24 de junio de 2020, 14:49:49 (UTC+2), Paul Andrews escribió:
>>
>> Read the layout recommendations in the LT1308A datasheet. You will need
>> to adapt it to this configuration.
>>
>> What is the voltage rating of the 47k resistor? What are the voltage
>> ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What
>> is the saturation current of the transformer?
>>
>> On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
>>>
>>> Hello! Thanks for the response!
>>>
>>> I add here again the PCB layers that Im using.
>>>
>>>
>>> El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:

 What does your layout look like? Show us a picture of the pcb with the
 layers visible.

 Just the layout of the board can make or break a DC-DC converter with
 all of the high current transients and control signals.

 On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez 
 wrote:

>
> Hello Again, hope everyone is good!
>
> I was trying to make a DC-DC booster converter using the LT1308B/A
> device, I made a PCB for it, doing the same as the datasheet of this 
> device
> says, but  I don´t get the High Votage, and that`s
> why im here asking for help, I tried a lot of things put don`t know
> what it can be.
>
> This is the schematic I use  (This one is from the datasheet) :
>
>
> The PCB I made is the same as this schematic and using the same
> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>
> *Any Ideas of what I can do to find what is going wrong?*
>
> *I have LBI and LB0 from the LT1308 Device not connected to anything.
> */SHDN pin is connected to Vin, Positive Voltage to It works.
> *Because I want 180V output voltage I have resistor from FB R1 = 47K
> and R2 = 300 Ohm to get 1,21V Feedback.
> *The capacitors Im using (10nF 250v) are not electrolitic, they are
> normal ones.
>
>
> Thankss Guys!
>
> --
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> 
> .
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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread 'Ian Vine' via neonixie-l

"Yes! I would try that, the thing is that if I put those values, Ill get 350V
1,2mA as the datasheet says.
That´s why I made this calculations :
If I want to get a Vout of 180V for supply a Nixie tube, I need to put a R1
=47K and R2 = 300. that`s Why I putted those!
"
You need to look at the current in the FB loop. The datasheet values give a
feedback current around 35uA, so for 170v and FB i of 35uA, you're looking at
something around 5M for R1
CheersIan
On Wednesday, 24 June 2020, 14:13:15 BST, Paul Andrews
wrote:

Also, if the datasheet shows transformer pin 6 connected to ground and pin 4
connected to the output. You have these swapped.

On Wednesday, June 24, 2020 at 9:08:46 AM UTC-4, Paul Andrews wrote:
Where is D4 in your circuit? It should be between the transformer pin connected
to SW and the transformer pin connected to ground.

On Wednesday, June 24, 2020 at 9:06:07 AM UTC-4, MrThe50sanchez wrote:
Hello !

Yes, I used the components that the Datasheet says, I got it from here:

The thing is, that a Triple Voltage Circuit uses electrolitic capacitors, this
is not the same configuration as a voltage triple circuit, but, Can It be that
the capacitors I added are not electrolitic? I just
putted normal ones (SMD 10nF 250V).
Thanks a Lot!

El miércoles, 24 de junio de 2020, 14:49:49 (UTC+2), Paul Andrews escribió:
Read the layout recommendations in the LT1308A datasheet. You will need to
adapt it to this configuration.
What is the voltage rating of the 47k resistor? What are the voltage ratings of
the 10nF capacitors? What is the voltage rating of BAV21W? What is the
saturation current of the transformer?

On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
Hello! Thanks for the response!

I add here again the PCB layers that Im using.

El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:
What does your layout look like? Show us a picture of the pcb with the layers
visible.
Just the layout of the board can make or break a DC-DC converter with all of
the high current transients and control signals.
On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez wrote:

Hello Again, hope everyone is good!

This is the schematic I use (This one is from the datasheet) :

Thankss Guys!

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread Paul Andrews

Also, if the datasheet shows transformer pin 6 connected to ground and pin 
4 connected to the output. You have these swapped.

On Wednesday, June 24, 2020 at 9:08:46 AM UTC-4, Paul Andrews wrote:
>
> Where is D4 in your circuit? It should be between the transformer pin 
> connected to SW and the transformer pin connected to ground. 
>
> On Wednesday, June 24, 2020 at 9:06:07 AM UTC-4, MrThe50sanchez wrote:
>>
>> Hello ! 
>>
>> Yes, I used the components that the Datasheet says, I got it from here: 
>>
>>
>> The thing is, that a Triple Voltage Circuit uses electrolitic capacitors, 
>> this is not the same configuration as a voltage triple circuit, but, Can It 
>> be that the capacitors I added are not electrolitic? I just 
>> putted normal ones (SMD 10nF 250V).
>>
>> Thanks a Lot! 
>>
>>
>>
>>
>>
>> El miércoles, 24 de junio de 2020, 14:49:49 (UTC+2), Paul Andrews 
>> escribió:
>>>
>>> Read the layout recommendations in the LT1308A datasheet. You will need 
>>> to adapt it to this configuration.
>>>
>>> What is the voltage rating of the 47k resistor? What are the voltage 
>>> ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What 
>>> is the saturation current of the transformer?
>>>
>>> On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:

 Hello! Thanks for the response! 

 I add here again the PCB layers that Im using. 


 El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:
>
> What does your layout look like? Show us a picture of the pcb with the 
> layers visible. 
>
> Just the layout of the board can make or break a DC-DC converter with 
> all of the high current transients and control signals.
>
> On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez  
> wrote:
>
>>
>> Hello Again, hope everyone is good! 
>>
>> I was trying to make a DC-DC booster converter using the LT1308B/A 
>> device, I made a PCB for it, doing the same as the datasheet of this 
>> device 
>> says, but  I don´t get the High Votage, and that`s 
>> why im here asking for help, I tried a lot of things put don`t know 
>> what it can be. 
>>
>> This is the schematic I use  (This one is from the datasheet) :
>>
>>
>> The PCB I made is the same as this schematic and using the same 
>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>>
>> *Any Ideas of what I can do to find what is going wrong?*
>>
>> *I have LBI and LB0 from the LT1308 Device not connected to anything.
>> */SHDN pin is connected to Vin, Positive Voltage to It works. 
>> *Because I want 180V output voltage I have resistor from FB R1 = 47K 
>> and R2 = 300 Ohm to get 1,21V Feedback. 
>> *The capacitors Im using (10nF 250v) are not electrolitic, they are 
>> normal ones. 
>>
>>
>> Thankss Guys! 
>>
>> -- 
>> 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/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com
>>  
>> 
>> .
>>
>

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread Paul Andrews

Where is D4 in your circuit? It should be between the transformer pin 
connected to SW and the transformer pin connected to ground. 

On Wednesday, June 24, 2020 at 9:06:07 AM UTC-4, MrThe50sanchez wrote:
>
> Hello ! 
>
> Yes, I used the components that the Datasheet says, I got it from here: 
>
>
> The thing is, that a Triple Voltage Circuit uses electrolitic capacitors, 
> this is not the same configuration as a voltage triple circuit, but, Can It 
> be that the capacitors I added are not electrolitic? I just 
> putted normal ones (SMD 10nF 250V).
>
> Thanks a Lot! 
>
>
>
>
>
> El miércoles, 24 de junio de 2020, 14:49:49 (UTC+2), Paul Andrews escribió:
>>
>> Read the layout recommendations in the LT1308A datasheet. You will need 
>> to adapt it to this configuration.
>>
>> What is the voltage rating of the 47k resistor? What are the voltage 
>> ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What 
>> is the saturation current of the transformer?
>>
>> On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
>>>
>>> Hello! Thanks for the response! 
>>>
>>> I add here again the PCB layers that Im using. 
>>>
>>>
>>> El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:

 What does your layout look like? Show us a picture of the pcb with the 
 layers visible. 

 Just the layout of the board can make or break a DC-DC converter with 
 all of the high current transients and control signals.

 On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez  
 wrote:

>
> Hello Again, hope everyone is good! 
>
> I was trying to make a DC-DC booster converter using the LT1308B/A 
> device, I made a PCB for it, doing the same as the datasheet of this 
> device 
> says, but  I don´t get the High Votage, and that`s 
> why im here asking for help, I tried a lot of things put don`t know 
> what it can be. 
>
> This is the schematic I use  (This one is from the datasheet) :
>
>
> The PCB I made is the same as this schematic and using the same 
> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>
> *Any Ideas of what I can do to find what is going wrong?*
>
> *I have LBI and LB0 from the LT1308 Device not connected to anything.
> */SHDN pin is connected to Vin, Positive Voltage to It works. 
> *Because I want 180V output voltage I have resistor from FB R1 = 47K 
> and R2 = 300 Ohm to get 1,21V Feedback. 
> *The capacitors Im using (10nF 250v) are not electrolitic, they are 
> normal ones. 
>
>
> Thankss Guys! 
>
> -- 
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> Groups "neonixie-l" group.
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> an email to neoni...@googlegroups.com.
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>  
> 
> .
>


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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread MrThe50sanchez

Hello ! 

Yes, I used the components that the Datasheet says, I got it from here: 

The thing is, that a Triple Voltage Circuit uses electrolitic capacitors, 
this is not the same configuration as a voltage triple circuit, but, Can It 
be that the capacitors I added are not electrolitic? I just 
putted normal ones (SMD 10nF 250V).

Thanks a Lot! 

El miércoles, 24 de junio de 2020, 14:49:49 (UTC+2), Paul Andrews escribió:
>
> Read the layout recommendations in the LT1308A datasheet. You will need to 
> adapt it to this configuration.
>
> What is the voltage rating of the 47k resistor? What are the voltage 
> ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What 
> is the saturation current of the transformer?
>
> On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
>>
>> Hello! Thanks for the response! 
>>
>> I add here again the PCB layers that Im using. 
>>
>>
>> El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:
>>>
>>> What does your layout look like? Show us a picture of the pcb with the 
>>> layers visible. 
>>>
>>> Just the layout of the board can make or break a DC-DC converter with 
>>> all of the high current transients and control signals.
>>>
>>> On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez  
>>> wrote:
>>>

 Hello Again, hope everyone is good! 

 I was trying to make a DC-DC booster converter using the LT1308B/A 
 device, I made a PCB for it, doing the same as the datasheet of this 
 device 
 says, but  I don´t get the High Votage, and that`s 
 why im here asking for help, I tried a lot of things put don`t know 
 what it can be. 

 This is the schematic I use  (This one is from the datasheet) :

 The PCB I made is the same as this schematic and using the same 
 components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*

 *Any Ideas of what I can do to find what is going wrong?*

 *I have LBI and LB0 from the LT1308 Device not connected to anything.
 */SHDN pin is connected to Vin, Positive Voltage to It works. 
 *Because I want 180V output voltage I have resistor from FB R1 = 47K 
 and R2 = 300 Ohm to get 1,21V Feedback. 
 *The capacitors Im using (10nF 250v) are not electrolitic, they are 
 normal ones. 

 Thankss Guys! 

 -- 
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 .

>>>

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread Kevin A.

So if you really want to make this project work, then it's probably best
you start with a fresh layout. The PCB layout that you started with needs a
lot of work.

Believe me, I made the same mistakes when I first started designing high
voltage power supplies. Take a look this article I wrote which describes
how I learned about and designed a high voltage boost converter:
https://neonkev.com/2019/08/18/project-20-watt-high-voltage-boost-converter/

Your design is a flyback converter, but a lot of the same pcb design still
applies. I'll also find some of the articles I read which really helped
with my design.

Once we have a good layout, then we can work on picking the right values
for the feedback resistors and choosing all the other components. There is
a bit of a learning curve but be patient, read carefully and learn, and you
will make a working design soon enough!

On Wed, Jun 24, 2020, 8:49 AM Paul Andrews  wrote:

> Read the layout recommendations in the LT1308A datasheet. You will need to
> adapt it to this configuration.
>
> What is the voltage rating of the 47k resistor? What are the voltage
> ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What
> is the saturation current of the transformer?
>
> On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
>>
>> Hello! Thanks for the response!
>>
>> I add here again the PCB layers that Im using.
>>
>>
>> El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:
>>>
>>> What does your layout look like? Show us a picture of the pcb with the
>>> layers visible.
>>>
>>> Just the layout of the board can make or break a DC-DC converter with
>>> all of the high current transients and control signals.
>>>
>>> On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez 
>>> wrote:
>>>

 Hello Again, hope everyone is good!

 I was trying to make a DC-DC booster converter using the LT1308B/A
 device, I made a PCB for it, doing the same as the datasheet of this device
 says, but  I don´t get the High Votage, and that`s
 why im here asking for help, I tried a lot of things put don`t know
 what it can be.

 This is the schematic I use  (This one is from the datasheet) :

 The PCB I made is the same as this schematic and using the same
 components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*

 *Any Ideas of what I can do to find what is going wrong?*

 *I have LBI and LB0 from the LT1308 Device not connected to anything.
 */SHDN pin is connected to Vin, Positive Voltage to It works.
 *Because I want 180V output voltage I have resistor from FB R1 = 47K
 and R2 = 300 Ohm to get 1,21V Feedback.
 *The capacitors Im using (10nF 250v) are not electrolitic, they are
 normal ones.

 Thankss Guys!

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 .

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> 
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Re: [neonixie-l] Re: HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread MrThe50sanchez

Hello! 

Yes!  I would try that, the thing is that if I put those values, Ill get 
350V 1,2mA as the datasheet says.

That´s why I made this calculations :

If I want to get a Vout of 180V for supply a Nixie tube, I need to put a R1 
=47K and R2 = 300. that`s Why I putted those! 

thanks a lot!

El miércoles, 24 de junio de 2020, 14:43:35 (UTC+2), iavine escribió:
>
> "I have resistor from FB R1 = 47K and R2 = 300 Ohm to get 1,21V Feedback."
>
> The FB resistors in the datasheet are 10M and 34.8K. Just thinking you 
> might want to use similar values. Rough calculation your FB divider will 
> draw more current than the device can supply. I might be wrong but worth 
> looking at.
>
> Cheers
> Ian
> On Wednesday, 24 June 2020, 11:45:17 BST, MrThe50sanchez <
> the50s...@gmail.com > wrote: 
>
>
> Hello, Thanks for your answer. 
>
> ·Is sad but I dont have and Scope to watch what is going on with the SW 
> pin from te LT1308 device. 
>
> ·My battery voltage when I connect it is 3.0V and the readings in the Vin 
> and SW are 3.0V. I add you a pic from the battery Im using and also the 
> schematic of the PCB. 
> Is the LB1 and LB0 floating like that? Im from Spain and have searched and 
> Understand that floating is leaving it not connect to anything, just like 
> that. 
>
>
>
> El martes, 23 de junio de 2020, 23:26:00 (UTC+2), gregebert escribió:
>
> First thing is to get a scope and start looking around.
>
> 1. You should see the SW pin pulsating. If not, what's happening on the 
> SHDN and FB pins ?
> 2. What is your battery voltage reading when connected and disconnected ? 
> Are you sure it's 3.0V ? All of the Li-ion batteries I've used are "3.7V", 
> which really means 3.6 to 4.2V depending upon the sate-of-charge and 
> load-current.
>
> The VC and FB pins are sensitive to noise. Make sure LBI is floating.
>
> -- 
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> "neonixie-l" group.
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>
> https://groups.google.com/d/msgid/neonixie-l/58ab40d4-a6fb-4dad-be13-48f925764fa2o%40googlegroups.com
>  
> 
> .
>

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread Paul Andrews

Read the layout recommendations in the LT1308A datasheet. You will need to 
adapt it to this configuration.

What is the voltage rating of the 47k resistor? What are the voltage 
ratings of the 10nF capacitors? What is the voltage rating of BAV21W? What 
is the saturation current of the transformer?

On Wednesday, June 24, 2020 at 6:46:01 AM UTC-4, MrThe50sanchez wrote:
>
> Hello! Thanks for the response! 
>
> I add here again the PCB layers that Im using. 
>
>
> El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:
>>
>> What does your layout look like? Show us a picture of the pcb with the 
>> layers visible. 
>>
>> Just the layout of the board can make or break a DC-DC converter with all 
>> of the high current transients and control signals.
>>
>> On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez  wrote:
>>
>>>
>>> Hello Again, hope everyone is good! 
>>>
>>> I was trying to make a DC-DC booster converter using the LT1308B/A 
>>> device, I made a PCB for it, doing the same as the datasheet of this device 
>>> says, but  I don´t get the High Votage, and that`s 
>>> why im here asking for help, I tried a lot of things put don`t know what 
>>> it can be. 
>>>
>>> This is the schematic I use  (This one is from the datasheet) :
>>>
>>>
>>> The PCB I made is the same as this schematic and using the same 
>>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>>>
>>> *Any Ideas of what I can do to find what is going wrong?*
>>>
>>> *I have LBI and LB0 from the LT1308 Device not connected to anything.
>>> */SHDN pin is connected to Vin, Positive Voltage to It works. 
>>> *Because I want 180V output voltage I have resistor from FB R1 = 47K and 
>>> R2 = 300 Ohm to get 1,21V Feedback. 
>>> *The capacitors Im using (10nF 250v) are not electrolitic, they are 
>>> normal ones. 
>>>
>>>
>>> Thankss Guys! 
>>>
>>> -- 
>>> 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/7d2fbb96-d88c-4341-b89a-2ab723f403dao%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>

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Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

2020-06-24 Thread MrThe50sanchez

Hello! Thanks for the response! 

I add here again the PCB layers that Im using. 


El martes, 23 de junio de 2020, 23:40:06 (UTC+2), Kevin A. escribió:
>
> What does your layout look like? Show us a picture of the pcb with the 
> layers visible. 
>
> Just the layout of the board can make or break a DC-DC converter with all 
> of the high current transients and control signals.
>
> On Tue, Jun 23, 2020, 4:22 PM MrThe50sanchez  > wrote:
>
>>
>> Hello Again, hope everyone is good! 
>>
>> I was trying to make a DC-DC booster converter using the LT1308B/A 
>> device, I made a PCB for it, doing the same as the datasheet of this device 
>> says, but  I don´t get the High Votage, and that`s 
>> why im here asking for help, I tried a lot of things put don`t know what 
>> it can be. 
>>
>> This is the schematic I use  (This one is from the datasheet) :
>>
>>
>> The PCB I made is the same as this schematic and using the same 
>> components, Im using a *rechargable battery CR2 800mAh 3.0V Li-on.*
>>
>> *Any Ideas of what I can do to find what is going wrong?*
>>
>> *I have LBI and LB0 from the LT1308 Device not connected to anything.
>> */SHDN pin is connected to Vin, Positive Voltage to It works. 
>> *Because I want 180V output voltage I have resistor from FB R1 = 47K and 
>> R2 = 300 Ohm to get 1,21V Feedback. 
>> *The capacitors Im using (10nF 250v) are not electrolitic, they are 
>> normal ones. 
>>
>>
>> Thankss Guys! 
>>
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>> 
>> .
>>
>

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[neonixie-l] What is this HV gadget?

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] Re: HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

Re: [neonixie-l] HELP WITH DC-DC BOOSTER CONVERTER

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