Re: [neonixie-l] Spark arrestors?

[Nick Andrews]

Am I reading that right, <5.5MBq in each tube?  I have a couple of old
spark gap tubes with Cs-137 in them used to calibrate isotope identifiers I
have but being WWII vintage, likely not a uniform amount in each tube was
used.  A pint spot on inside of the glass, but gas is likely easier to fill
more uniformly piece to piece.

On Sat, Jun 24, 2023 at 11:56 PM Mac Doktor  wrote:

>
> On Jun 25, 2023, at 12:21 AM, Nick Andrews  wrote:
>
> Interesting.   Bigger ones used in what?  I have a box somewhere with old
> railroad lightning assessors.
>
>
> I was looking at these:
> https://www.aliexpress.us/item/3256804108987619.html
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> "Every kid starts out as a natural-born scientist, and then we beat it out
> of them. A few trickle through the system with their wonder and enthusiasm
> for science intact."—Carl Sagan, *Psychology Today*, 1996
>
> --
> 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 neonixie-l+unsubscr...@googlegroups.com.
> To view this discussion on the web, visit
> https://groups.google.com/d/msgid/neonixie-l/3520BABE-5435-4817-A431-8E5188741A4B%40gmail.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 neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/CAJD4P-gkE_Bzx2LuCFpNL-rACrA0AQcn50-Mmvzg9a0PVyMTdw%40mail.gmail.com.

Re: [neonixie-l] Spark arrestors?

[Nick Andrews]

Ooh, barely $108 each!

On Sat, Jun 24, 2023 at 11:56 PM Mac Doktor  wrote:

>
> On Jun 25, 2023, at 12:21 AM, Nick Andrews  wrote:
>
> Interesting.   Bigger ones used in what?  I have a box somewhere with old
> railroad lightning assessors.
>
>
> I was looking at these:
> https://www.aliexpress.us/item/3256804108987619.html
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> "Every kid starts out as a natural-born scientist, and then we beat it out
> of them. A few trickle through the system with their wonder and enthusiasm
> for science intact."—Carl Sagan, *Psychology Today*, 1996
>
> --
> 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 neonixie-l+unsubscr...@googlegroups.com.
> To view this discussion on the web, visit
> https://groups.google.com/d/msgid/neonixie-l/3520BABE-5435-4817-A431-8E5188741A4B%40gmail.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 neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/CAJD4P-gt%2BohWBTVwDNBEjeHx3xpRDJZiK5HY_DDma-NodYzfbQ%40mail.gmail.com.

[neonixie-l] seeking info on obsolete IC's

[Richard Nicewonger]

Hello everyone,

In my obsession with Nixie calculators, I recently acquired a Dietzgen 
ESR-1 which is a rebranded Casio FX-1.
It required the usual replacement of the power supply HV caps and a pass 
transistor and cap in another regulator circuit.
After all that, it is still 95% DOA. This is an early calc using “stone age” 
JMOS logic where a “1” is @ -24V and “0” is GND.
These IC’s are now more than 50 years old and mostly unobtainable. In order to 
troubleshoot anything, I would love to get
any data sheets that could identify IC functions. I have seen some of the more 
common ones online, but there are a few
from NEC such as uPD129C, uPD173D, uPD312C, uPD358C, and from Toshiba HD3113P 
that seem to be elusive.
Could there be any members that have knowledge of these IC’s or the calculator 
itself? Any help would be appreciated.

Thank you,

Rich N.


-- 
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 neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/8C0DA859-B01F-48E1-BC4D-EF7FE8CAAE2F%40optonline.net.

Re: [neonixie-l] Re: Limitation resistance on IN-4

[Michail Wilson]

Just tie the anodes together

Sent from Space

On Jun 26, 2023, at 2:22 PM, Benoit Tourret  wrote:



755 / 5 000
Résultats de traduction
Résultat de traduction
star_border
I made some new tests. I mounted 6 IN-12 tubes on the clock board. I noticed 
that there were 3K resistors on board. So I plugged my tubes directly into the 
board without adding any resistance. It worked directly at 170V. The problem 
comes from the tubes or their wiring. I'm reassured, I can still hold a 
soldering iron. On the other hand, concerning the pinout of the IN-4 tubes, I 
read everything and its opposite. between the biquinary mode, the even/odd 
anodes and the anodes marked A1, A2 and A3, I am lost. I have 1, 2, 3, 5, 6, 8, 
9, 11, 12 and 14 for the cathodes wired in parallel and 13 for the anode. but 
the numbers 0 and 2 are very difficult to light. How to connect these tubes ??? 
should I connect the 4, 7 and 10 to the 13 ??


Regards,
Benoit.

Le jeudi 22 juin 2023 à 23:24:47 UTC+2, Benoit Tourret a écrit :
I am at the maximum allowed by the software: 200V
I can mesure between 195 and 198V.

At the max brightness, I am less bright than another IV-4 clock I have. 
(Sputnik clock, 1 x 4 Mutiplexed + 1 OG-4)

If I enable the LDR, under 250 some digits doesn't light, (usually the 0 witch 
is more difficult to lit than the 1 with a low voltage).
with a minimum of 300, the 0 are sometimes flickering,
I even put a complete new set of 6 bulbs, never used.



Le jeudi 22 juin 2023 à 20:19:00 UTC+2, Blitzen a écrit :
What is your voltage set at? 6.8K would be an appropriate resistance for these 
tubes at 180vdc in direct-drive mode, which that clock kit is not; it's a 1x6 
multiplex. Multiplexing usually yields a less-bright display. There is some 
debate as to whether or not you should use lower resistance to make them 
brighter.
Since that kit gives you the option to raise the voltage, I would try that 
first.

On Wednesday, June 21, 2023 at 10:27:45 AM UTC-5 Benoit Tourret wrote:
Hello Everybody, what resistor would you add to the IN-4 tubes on a  Classic 
Rev6 Clock   board from  nixieclock.biz ?
I put one 6.8K per tube on the anodes, but the tubes are a bit weak,

Any idea ?

Regards,
Benoit.


--
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 
neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/7d0fabac-03d9-48e0-808f-29b4f7c7n%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 neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/A5B7A1DF-4893-46F2-B751-6001AD504A95%40michail.com.

[neonixie-l] Re: Limitation resistance on IN-4

[Benoit Tourret]

755 / 5 000
Résultats de traduction
Résultat de traduction
star_border
I made some new tests. I mounted 6 IN-12 tubes on the clock board. I 
noticed that there were 3K resistors on board. So I plugged my tubes 
directly into the board without adding any resistance. It worked directly 
at 170V. The problem comes from the tubes or their wiring. I'm reassured, I 
can still hold a soldering iron. On the other hand, concerning the pinout 
of the IN-4 tubes, I read everything and its opposite. between the 
biquinary mode, the even/odd anodes and the anodes marked A1, A2 and A3, I 
am lost. I have 1, 2, 3, 5, 6, 8, 9, 11, 12 and 14 for the cathodes wired 
in parallel and 13 for the anode. but the numbers 0 and 2 are very 
difficult to light. How to connect these tubes ??? should I connect the 4, 
7 and 10 to the 13 ??


Regards,
Benoit.

Le jeudi 22 juin 2023 à 23:24:47 UTC+2, Benoit Tourret a écrit :

> I am at the maximum allowed by the software: 200V
> I can mesure between 195 and 198V.
>
> At the max brightness, I am less bright than another IV-4 clock I have. 
> (Sputnik clock, 1 x 4 Mutiplexed + 1 OG-4)
>
> If I enable the LDR, under 250 some digits doesn't light, (usually the 0 
> witch is more difficult to lit than the 1 with a low voltage).
> with a minimum of 300, the 0 are sometimes flickering, 
> I even put a complete new set of 6 bulbs, never used.
>
>
>
> Le jeudi 22 juin 2023 à 20:19:00 UTC+2, Blitzen a écrit :
>
>> What is your voltage set at? 6.8K would be an appropriate resistance for 
>> these tubes at 180vdc in direct-drive mode, which that clock kit is not; 
>> it's a 1x6 multiplex. Multiplexing usually yields a less-bright display. 
>> There is some debate as to whether or not you should use lower resistance 
>> to make them brighter. 
>> Since that kit gives you the option to raise the voltage, I would try 
>> that first.
>>
>> On Wednesday, June 21, 2023 at 10:27:45 AM UTC-5 Benoit Tourret wrote:
>>
>>> Hello Everybody, what resistor would you add to the IN-4 tubes on a 
>>>  Classic Rev6 Clock   board from  nixieclock.biz ?
>>> I put one 6.8K per tube on the anodes, but the tubes are a bit weak, 
>>>
>>> Any idea ?
>>>
>>> Regards,
>>> Benoit.
>>>
>>>

-- 
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 neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/7d0fabac-03d9-48e0-808f-29b4f7c7n%40googlegroups.com.