NICE! You will find this very useful for testing and characterizing nixie
tubes.
For my more-valuable tubes (RZ568m and b7971), I collect current-voltage
data for each numeral (or segment) and plot on a graph. From there, I can
see if there is consistency across tubes, which is an indicator
I've used a few different flavors of these cheap digital meters (0-500VDC,
120VAC, 300VDC) and have not had any problemsyet. Most of them are
self-powered, which is handy because it doesn't require a separate power
supply, though risky because they do create a potential source for a short.
I am a bit afraid of all those inexpensive displays made in PRC, the seller
often doesn't know what he is selling, the specs are wrong or trunked, and
I don't know their behavior with 300V DC or more...
Well, I ran a few of my IN-1, I had to run a couple of them at 4mA 180V and
the black marks
Looks good. I've gotten very fond of the inexpensive digital meters on Ebay
and started putting them in many of my projects.
On Tuesday, April 25, 2023 at 10:16:21 AM UTC-7 Benoit Tourret wrote:
> [image: 20230425_170205.jpg]
> Here is the first try for my testing devices.
> My HT power
Thanks Terry.
this also will help me a lot.
My electronic courses are too far to be clear in my mind...
When I read gregebert's thread, I wanted to write the complete equation to
calculate the resistor for a wanted current. but the result was the
opposite of the reality...
so I decided to use
Thanks Moses.
I put a drawing to explain the "resistor and the Ammeter" cause one is
serial and the other in //
I found the specs of a
rheostat: https://docs.rs-online.com/736e/0900766b8142087d.pdf but I don't
see the max voltage.
Le samedi 22 avril 2023 à 19:50:36 UTC+2, Moses a écrit :
>
Reading this thread has begun to make my eyes glaze over. I find the following
diagram to be helpful for understanding some of what's going on. Perhaps it
will add some clarity to the discussion. This in from Marcin Saj's github and
specifically concerns his PRO Nixie Tester:
It took a while
Benoit,
I'll try and clarify what I can for you.
"the voltmeter should be in place of the resistance and vice versa"... I
think you mean ammeter here? If so, the ammeter is in series, so it
shouldn't matter where it is really. If you really did mean voltmeter.. it
depends on if you want to
In order to be able to talk about the same thing, I have a few questions
regarding my DC power supply.
I have in order: a 0-30V / 0-10A adjustable DC power supply, a NCH6100HV
(12-24V
to 85-235V HV) module, a 0-300V DC voltmeter, a 0-30mA ammeter and a 32.4
kΩ limiting resistor mounted on
I've always just "unpoisoned" tubes with slightly higher current then
normal, not higher voltage. A couple of hours to a few days usually fixes
them for me. I don't think a 150-200% overdrive on the current will hurt it
too much for a short duration. I've seen some tubes unpoisoned right in
Ben - You can just reduce the resistor value slightly to increase the
current. At 180V, you had 2mA with a 32K resistor; using ohms law, the
voltage-drop across the resistor is 32K * 2mA = 64V. Since the power supply
is 180V, the voltage across the nixie tube is about 116V.
To calculate the
When I wanted a higher voltage supply to refresh some tubes, I found an
electrophoresis supply on ebay (Shandon Vokam 400-100). It provides up to
400V at 100mA with voltage/current metering and did a good job for me. I
think it cost me about £40.
On Fri, Apr 21, 2023 at 9:19 PM Benoit Tourret
I don't know how to rise the intensity...
I wish I had a laboratory DC power supply, but mine stops at 30V.
so I put a NCH6300HV to raise the voltage. If I can adjust the voltage, I
cannot adjust anything else.
however I added a voltmeter and ammeter to check what I'm sending to the
tube. Do
So I shouldn't be storing totes of nixies on a high shelf in my shed in
Texas?
" Only a few survive today that weren't dissected or tortured in a
microwave oven (yeah, pretty hilarious but kinda toxic because of the
bakelite)." This is why I used to have a shop microwave, just for
experiments
The IN-1 datasheet says 2.5mA typical operating current, so you should try
cleaning the other 3 tubes at just under 3mA. The other 7 tubes might
clean-up on their own at normal current if the usage is balanced.
So did you see some improvement ?
On Friday, April 21, 2023 at 12:14:05 AM UTC-7
I ran each tube with 180V 2mA / two hours, turning each plate for 2 minutes.
on 10 tubes:
7 are OK
3 are not perfect.
I will wait to be able to lit them all together.
Le jeudi 20 avril 2023 à 01:27:40 UTC+2, gregebert a écrit :
> I couldn't resist asking google Bard this question: Are IN-1
I couldn't resist asking google Bard this question: Are IN-1 nixie tubes
reliable ?
Well, here's the answer. Feel free to laugh.love the part about the
filaments. Geez, maybe that's why I had so much trouble with mine ?
IN-1 nixie tubes are generally reliable, but they can fail over time.
I never had an IN-1 run long enough to get poisoned. Mine developed
internal shorts, resulting in 2 numerals glowing at the same time.
>From what I've heard, nixie degradation increases exponentially with
current, so you want to stay as close as possible to normal operating
current. Try running
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