RE: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character

[Michail Wilson]

The 5916 will work perfectly.

And, it’s better than the 595 shift register since the 5916 requires only 1 
resister.

 

It’s what I have used on projects.

 

Michail

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Bill Notfaded
Sent: Sunday, April 14, 2019 10:14 PM
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 
14-segment character

 

Yeah I'm probably better off missing that one... Now I gotta make sure PayPal 
pays me back for this jerk that cancelled after I won... I knew it was too good 
to be true hehe.

 

I'm looking forward to making some DR20x0 clocks.  I think the Texas Instrument 
TLC5916 Constant Current LED Sink Driver chip sounds like it might be good for 
stuff like them maybe?

 

Bill

.

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Re: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character

[Bill Notfaded]

Yeah I'm probably better off missing that one... Now I gotta make sure
PayPal pays me back for this jerk that cancelled after I won... I knew it
was too good to be true hehe.

I'm looking forward to making some DR20x0 clocks.  I think the Texas
Instrument TLC5916 Constant Current LED Sink Driver chip sounds like it
might be good for stuff like them maybe?

Bill

On Sun, Apr 14, 2019, 10:08 PM Michail Wilson  wrote:

> Jeff,
>
>
>
> Not really.  I am sure people looked at the guys new account and already
> have received 2 negatives.
>
> Even if they were good, the risk is high.
>
>
>
>
>
> Michail
>
>
>
> *From:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] *On
> Behalf Of *Jeff Walton
> *Sent:* Sunday, April 14, 2019 9:23 PM
> *To:* neonixie-l@googlegroups.com
> *Subject:* Re: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½"
> tall 14-segment character
>
>
>
> Latest auction for B7971's went for $125ea.  That seems to a reasonable
> price and auction based on the last five years.
>
>
>
> Paying $250-$300 each really screws up the market for hobbyists. There
> still seems to be a supply of 7971's out there...
>
>
>
> Jeff
>
>
>
>  Original message 
>
> From: Nicholas Stock 
>
> Date: 3/26/19 9:25 AM (GMT-06:00)
>
> To: neonixie-l@googlegroups.com
>
> Subject: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall
> 14-segment character
>
>
>
> Things are going a little crazy??? 4 B7971’s just sold for over $250
> eachthere’s another auction for two tubes with prices over 180 each
> currently..
>
>
> Look at this on eBay
> TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character
> 
>
>
>
> Sent from my iPhone
>
> --
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RE: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character

[Michail Wilson]

Jeff,

 

Not really.  I am sure people looked at the guys new account and already have 
received 2 negatives.

Even if they were good, the risk is high.

 

 

Michail 

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Jeff Walton
Sent: Sunday, April 14, 2019 9:23 PM
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 
14-segment character

 

Latest auction for B7971's went for $125ea.  That seems to a reasonable price 
and auction based on the last five years. 

 

Paying $250-$300 each really screws up the market for hobbyists. There still 
seems to be a supply of 7971's out there... 

 

Jeff 

 

 Original message 

From: Nicholas Stock  

Date: 3/26/19 9:25 AM (GMT-06:00) 

To: neonixie-l@googlegroups.com 

Subject: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment 
character 

 

Things are going a little crazy??? 4 B7971’s just sold for over $250 
eachthere’s another auction for two tubes with prices over 180 each 
currently..


   

Look at this on eBay
TESTED 4 Nixie Tubes Burroughs B-7971 3½ 

 " tall 14-segment character

 

Sent from my iPhone

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Re: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character

[Bill Notfaded]

I was going to bid on those too but missed it... Dang it!

On Sun, Apr 14, 2019, 9:22 PM Jeff Walton  wrote:

> Latest auction for B7971's went for $125ea.  That seems to a reasonable
> price and auction based on the last five years.
>
> Paying $250-$300 each really screws up the market for hobbyists. There
> still seems to be a supply of 7971's out there...
>
> Jeff
>
>  Original message 
> From: Nicholas Stock 
> Date: 3/26/19 9:25 AM (GMT-06:00)
> To: neonixie-l@googlegroups.com
> Subject: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall
> 14-segment character
>
> Things are going a little crazy??? 4 B7971’s just sold for over $250
> eachthere’s another auction for two tubes with prices over 180 each
> currently..
>
>
> Look at this on eBay
> TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character
> 
>
>
>
> Sent from my iPhone
>
> --
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Re: [neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment character

[Jeff Walton]

Latest auction for B7971's went for $125ea.  That seems to a reasonable price 
and auction based on the last five years. Paying $250-$300 each really screws 
up the market for hobbyists. There still seems to be a supply of 7971's out 
there... Jeff 
 Original message From: Nicholas Stock  
Date: 3/26/19  9:25 AM  (GMT-06:00) To: neonixie-l@googlegroups.com Subject: 
[neonixie-l] TESTED 4 Nixie Tubes Burroughs B-7971 3½" tall 14-segment 
character Things are going a little crazy??? 4 B7971’s just sold for over $250 
eachthere’s another auction for two tubes with prices over 180 each 
currently..Look at this on eBayTESTED 4 Nixie Tubes Burroughs B-7971 3½" 
tall 14-segment character Sent from my iPhone

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Re: [neonixie-l] IN-23 is neat and all but only two tubes and the price...

[Bill Notfaded]

I'm so glad we got the B5971's... They're so unique and the smartsockets are 
really unique design.  I wish I had gotten some of those vfd smartsockets back 
in the day...

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RE: [neonixie-l] IN-23 is neat and all but only two tubes and the price...

[Michail Wilson]

Wow,

 

I didn’t even know such a tube existed.

 

I think we made out on the 5971’s.

 

Look at this:

https://www.ebay.com/itm/Vintage-Burroughs-Nixie-8422-5991-14-Pin-Readout-Vacuum-Tube-with-sockets/253988594648

Look at the socket itself.

 

Michail Wilson

206-920-6312

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Bill Notfaded
Sent: Sunday, April 14, 2019 4:50 PM
To: neonixie-l
Subject: [neonixie-l] IN-23 is neat and all but only two tubes and the price...

 

https://www.ebay.com/itm/1-x-IN-23-IN23-UNIC-ULTRA-RARE-NIXIE-TUBE-SYMBOL-ALIEN-NOS-NEW-FULL-TESTED/123734417163
 

 

https://i.ebayimg.com/images/g/7J8AAOSwLFVcslYU/s-l1600.jpg

 

It was tempting because it is a rare tube that I'm sure aren't often around but 
I can't see it becoming much with two tubes.

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[neonixie-l] IN-23 is neat and all but only two tubes and the price...

[Bill Notfaded]

https://www.ebay.com/itm/1-x-IN-23-IN23-UNIC-ULTRA-RARE-NIXIE-TUBE-SYMBOL-ALIEN-NOS-NEW-FULL-TESTED/123734417163
 

https://i.ebayimg.com/images/g/7J8AAOSwLFVcslYU/s-l1600.jpg

It was tempting because it is a rare tube that I'm sure aren't often around 
but I can't see it becoming much with two tubes.

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[neonixie-l] Nice pic of several working HP instruments with nixies

[GastonP]

Ditto... just that.
I saw them and couldn't believe how well cared for they are.

http://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/msg2334354/#msg2334354

Cheers!

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RE: [neonixie-l] OT: Help buying banana sockets manufactured by Abbattron / HH Smith, anyone?

[johnk]

Martin, let’s see what offers you get first.

I inherited many cubic metres of parts and semi-dismantled equipment about six 
years ago. [You “knew” the guy slightly from AVO discussions iirc – from 
Adelaide.]

I sorted a lot of it while the experience was a bit novel. I didn’t get back to 
it after a couple of events interrupted.

I have two ten litre plastic boxes relatively easy to access of various banana 
sockets taken from test equipment.

NOTE:  most of these are the binding post variety though. I get the impression 
the ones you want are just a panel socket?

I am assuming 4mm too. 

Might be able to help if you can supply photo.   Oh, I could go look at the 
part numbers you mentioned [it is 0409, so I have an excuse for skipping over 
it J].

 

OK, so I looked on the web. Now I’ll ponder the location of my boxes.

 

I am located in Australia.

John K

 

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Dekatron42
Sent: Monday, 15 April 2019 01:58
To: neonixie-l
Subject: [neonixie-l] OT: Help buying banana sockets manufactured by Abbattron 
/ HH Smith, anyone?

 

Hi,

 

I am looking for three (3) each of black and red banana sockets manufactured by 
Abbatron / HH Smith numbered 1509-102 (red) and 1509-103 (black).

 

For some reason all of the companies carrying these that ship to Sweden have 
decided to demand that you have a company, that you buy at least 100 pieces and 
that you pay a hefty extra cost for buying them, above an extra shipping cost 
which is normally free - now, I don't have a company so I trip there already. I 
can't find them on eBay or any other surplus sites either (there are a few 100 
and 50 packages sold on eBay only white and black but no red that I can see).

 

These banana sockets aren't really expensive or anything, it is just that they 
have two flat sides and I need them to repair an old oscilloscope, a Conar 255 
Solid State Oscilloscope, and they are identical to the original ones and fit 
in the panel holes.

 

Can anyone here help me to buy them and ship them to me? I'll pay for them and 
the shipping of course!

 

/Martin

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[neonixie-l] OT: Help buying banana sockets manufactured by Abbattron / HH Smith, anyone?

[Dekatron42]

Hi,

I am looking for three (3) each of black and red banana sockets 
manufactured by Abbatron / HH Smith numbered 1509-102 (red) and 1509-103 
(black).

For some reason all of the companies carrying these that ship to Sweden 
have decided to demand that you have a company, that you buy at least 100 
pieces and that you pay a hefty extra cost for buying them, above an extra 
shipping cost which is normally free - now, I don't have a company so I 
trip there already. I can't find them on eBay or any other surplus sites 
either (there are a few 100 and 50 packages sold on eBay only white and 
black but no red that I can see).

These banana sockets aren't really expensive or anything, it is just that 
they have two flat sides and I need them to repair an old oscilloscope, a 
Conar 255 Solid State Oscilloscope, and they are identical to the original 
ones and fit in the panel holes.

Can anyone here help me to buy them and ship them to me? I'll pay for them 
and the shipping of course!

/Martin

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RE: [neonixie-l] Re: ZM1050 / Z550M

[johnk]

A scope gives a better picture of what is happening.

Before you go to a constant high voltage supply you should check the display 
specs.

And, a constant voltage will cause more power dissipation in any series 
resistor. Better check the rating.

 

This is where  others here are of more use to you – I just wanted to be sure 
that you had spotted the pulsed aspect of the DC in that circuit, I haven’t 
played with this device. 

If you were going to sub another supply and just went by meter readings you 
might have been led astray.

 

John k

[This is so like that Watts RMS thing  I tried to get nibbles on. Btw, I did 
send you something the next day Charles.]

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Richard Scales
Sent: Sunday, 14 April 2019 16:04
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] Re: ZM1050 / Z550M

 

Thank you for that, I think I'm getting there, I can see that the peak volts 
will be higher, 1.414 x 110 v. On that basis should I be OK using a DC supply 
of equivalent voltage or perhaps even higher by changing the series resistor 
value (I have several 170V supplies) then switching S0 to S9 via 5v TTL?

Richard

 

 

On Sun, 14 Apr 2019, 06:22 johnk,  wrote:

A bunch of my email delivery posts are out of order and missing some [for lots 
of groups].

I’ll comment anyway.

Notice that there is no smoothing capacitor in that diagram [if we are looking 
at the same one].

This means that  with the halfwave rectifier you are going to get pulsed DC 
rising to the peak of the sinewave 110V. That peak is 1.414 x RMS.

So, with luck you get 155V that is rising and falling and then a gap and then 
repeat. Assuming the 110 actually IS 110.

 

Different meters will give different answers because of the pulsing aspect of 
the DC. Moving coil meter will show average [0.318 x pk for this example]. DMMs 
depend – look at the manufacturer specs.

 

Hope I am not repeating other posts,

John K

 

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Richard Scales
Sent: Sunday, 14 April 2019 14:40
To: neonixie-l
Subject: [neonixie-l] Re: ZM1050 / Z550M

 

The main reason for not using that circuit is that I don't have that 
transformer to hand though I do have  many DC power supplies available and I 
just wanted to get the voltage right.

 

Having looked in to it in more detail is seems that it's just a half wave 
rectifier which should yield 0.45 x 110 V = 49.5V - so could I just use a 50V 
dc supply instead?

 

I would use a micro to generate the control signals - perhaps with a 74595 
shift register to reduce the pin count - does that all sound like a plan?

 

Richard

 



On Saturday, 13 April 2019 05:15:42 UTC+1, Richard Scales wrote:

I just discovered one of these tubes (labelled as a Dario ZM1050 / Z550M) in 
what looks like NOS condition.

I heave read a lot about from from various sources such as: 
https://www.dos4ever.com/Z550M/Z550M.html and here 
http://www.tubebbs.com/tubedata/sheets/013/z/ZM1050.pdf and I note that several 
articles refer to driving them in normal 'Nixie' mode rather than using the 5V 
switching that they were designed to support.

 

Before I hook this up to the grid I wonder if anyone here can confirm voltages 
and anode resistor values that might stop me from frying the thing as I also 
read that they might be few and far between.

 

>From various specs I have found they seem to suggest a supply voltage of 90V 
>ac and a cathode current of around 3mA. I am insufficiently qualified to 
>translate that to the 170v DC supply, strike and maintaining voltages (and 
>hence series resistor values) that I am more comfortable with.

 

The pinout shows a cathode, an anode and st0 - st9 and from what I can 
understand from the notes is seems that the original design concept was to 
drive st0 - st9 with 5V levels as high voltage transistors were not readily 
available at the time.

 

Has anyone driven these in any way and if so, would they be able to provide 
some further insight?

 

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Re: [neonixie-l] Re: ZM1050 / Z550M

[Richard Scales]

Thank you for that, I think I'm getting there, I can see that the peak
volts will be higher, 1.414 x 110 v. On that basis should I be OK using a
DC supply of equivalent voltage or perhaps even higher by changing the
series resistor value (I have several 170V supplies) then switching S0 to
S9 via 5v TTL?
Richard


On Sun, 14 Apr 2019, 06:22 johnk,  wrote:

> A bunch of my email delivery posts are out of order and missing some [for
> lots of groups].
>
> I’ll comment anyway.
>
> Notice that there is no smoothing capacitor in that diagram [if we are
> looking at the same one].
>
> This means that  with the halfwave rectifier you are going to get pulsed
> DC rising to the peak of the sinewave 110V. That peak is 1.414 x RMS.
>
> So, with luck you get 155V that is rising and falling and then a gap and
> then repeat. Assuming the 110 actually IS 110.
>
>
>
> Different meters will give different answers because of the pulsing aspect
> of the DC. Moving coil meter will show average [0.318 x pk for this
> example]. DMMs depend – look at the manufacturer specs.
>
>
>
> Hope I am not repeating other posts,
>
> John K
>
>
>
>
>
> *From:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] *On
> Behalf Of *Richard Scales
> *Sent:* Sunday, 14 April 2019 14:40
> *To:* neonixie-l
> *Subject:* [neonixie-l] Re: ZM1050 / Z550M
>
>
>
> The main reason for not using that circuit is that I don't have that
> transformer to hand though I do have  many DC power supplies available and
> I just wanted to get the voltage right.
>
>
>
> Having looked in to it in more detail is seems that it's just a half wave
> rectifier which should yield 0.45 x 110 V = 49.5V - so could I just use a
> 50V dc supply instead?
>
>
>
> I would use a micro to generate the control signals - perhaps with a 74595
> shift register to reduce the pin count - does that all sound like a plan?
>
>
>
> Richard
>
>
>
>
>
> On Saturday, 13 April 2019 05:15:42 UTC+1, Richard Scales wrote:
>
> I just discovered one of these tubes (labelled as a Dario ZM1050 / Z550M)
> in what looks like NOS condition.
>
> I heave read a lot about from from various sources such as:
> https://www.dos4ever.com/Z550M/Z550M.html and here
> http://www.tubebbs.com/tubedata/sheets/013/z/ZM1050.pdf and I note that
> several articles refer to driving them in normal 'Nixie' mode rather than
> using the 5V switching that they were designed to support.
>
>
>
> Before I hook this up to the grid I wonder if anyone here can confirm
> voltages and anode resistor values that might stop me from frying the thing
> as I also read that they might be few and far between.
>
>
>
> From various specs I have found they seem to suggest a supply voltage of
> 90V ac and a cathode current of around 3mA. I am insufficiently qualified
> to translate that to the 170v DC supply, strike and maintaining voltages
> (and hence series resistor values) that I am more comfortable with.
>
>
>
> The pinout shows a cathode, an anode and st0 - st9 and from what I can
> understand from the notes is seems that the original design concept was to
> drive st0 - st9 with 5V levels as high voltage transistors were not readily
> available at the time.
>
>
>
> Has anyone driven these in any way and if so, would they be able to
> provide some further insight?
>
>
>
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