Here's another approach, not really a viable retrofit to a nixie unless an
extra electrode fixed to the glass might work ?
https://youtu.be/y2_dTEXptZQ?t=227
On Tue, Dec 5, 2023 at 9:12 PM Jeff Walton wrote:
>
> Here is a closeup of the tube with a UV light source assisting... 395nM
> LEDs.
@googlegroups.com] Namens
Christian Riise Wagner
Verzonden: maandag 4 december 2023 8:55
Aan: neonixie-l
Onderwerp: Re: [neonixie-l] Re: Helping Nixie Tubes Fire in a Darkened Room
You won't generate ozone with 365nm. You'd need shorter wavelength UVC for that.
søndag den 3. december 2023 kl. 09.25.35
You won't generate ozone with 365nm. You'd need shorter wavelength UVC for
that.
søndag den 3. december 2023 kl. 09.25.35 UTC+1 skrev Tidak Ada:
> Hi Jeff, good to hear you are content with my suggestion.
>
> Two remarks: I bought at a time small 365nm transmission filter from a
> seller at
Hi Jeff, good to hear you are content with my suggestion.
Two remarks: I bought at a time small 365nm transmission filter from a seller
at either AliExpress or Banggood. That reduces the amount of visible light
considerabele. Second, make that the UV flash only during a short period around
I've done some testing with common 3mm UV LEDs that are in the 395nM
range. Running them at ~5mA provides a dim purple color light that when
placed under or in front of the tube actually makes the reliability of the
ignition very stable. Even in a fully darkened room, the segments and
You could have a high value resistor permanently connected between the
cathodes and ground so there is always a minimum current flowing through
them?
On Friday, December 1, 2023 at 8:30:47 AM UTC-5 Robert G. Schaffrath wrote:
> It would an interesting idea but the glass would block the
It would an interesting idea but the glass would block the ionizing
radiation (alpha and probably most beta particles from daughter elements in
the ore).
I have the same issue with B-7971's in a dark room. Unless I shine a
flashlight at them, it takes them a bit of time to turn on from a cold
Some tubes were doped with Kr85. They have little radiation signs on
them 122P224, Paul has a nice write up here (
https://www.nixies.us/bwg_gallery/122p224/). Half life is 10 years, so a
lot of decay since manufacture
On Thu, Nov 30, 2023 at 2:42 PM liam bartosiewicz <
If I remember correctly, there were some tubes manufactured that had a small external radioactive source to make them more reliable. It wouldn’t be very practical, or safe for that matter, but a radioactive nixie clock does sound pretty cool.On Nov 30, 2023, at 1:43 PM, Nicholas Stock wrote:May
I've never had problems with tubes failing to ignite, perhaps because I use
higher-than-minimum supply voltages, typically around +200VDC. My first
clock uses 340V.
On Thursday, November 30, 2023 at 1:46:25 PM UTC-8 Jeff Walton wrote:
> Give me the glow, Nick!
>
>
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I can try to modify the Omnixie HV module if higher voltage shows promise.
The module will be a little bit of a challenge as it has really small parts
and I have a rework gun that might be on the large side and melt everything
around the target resistor.
On Thursday, November 30, 2023 at
May I suggest a small piece of uranium ore placed next to the clock?
LOL.
Just kidding Jeff! I like Jon's idea, up the voltage/series resistor.
On Thu, Nov 30, 2023 at 1:38 PM Jeff Walton wrote:
> Not dimmed. Tried to do a momentary hit on all segments to "wake" up the
> tube and it helped
ed in rigger tubes.
>
>
>
> eric
>
>
>
> *Van:* neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] *Namens
> *Jon
> *Verzonden:* donderdag 30 november 2023 9:25
> *Aan:* neonixie-l
> *Onderwerp:* [neonixie-l] Re: Helping Nixie Tubes Fire in a D
Not dimmed. Tried to do a momentary hit on all segments to "wake" up the
tube and it helped some but the extra flash is distracting.
On Thursday, November 30, 2023 at 9:04:36 AM UTC-6 Paul Andrews wrote:
> Are they also dimmed using an LDR? If so, turn dimming off - if you have
> access to
as used in rigger tubes.
>
>
>
> eric
>
>
>
> *Van:* neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] *Namens
> *Jon
> *Verzonden:* donderdag 30 november 2023 9:25
> *Aan:* neonixie-l
> *Onderwerp:* [neonixie-l] Re: Helping Nixie Tubes Fire in a D
.
eric
Van: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] Namens Jon
Verzonden: donderdag 30 november 2023 9:25
Aan: neonixie-l
Onderwerp: [neonixie-l] Re: Helping Nixie Tubes Fire in a Darkened Room
I think the best approach would be to increase the HV. If you look
Are they also dimmed using an LDR? If so, turn dimming off - if you have
access to the source code, you could turn dimming off briefly when the
clock turns on.
On Wednesday, November 29, 2023 at 9:43:48 PM UTC-5 Jeff Walton wrote:
> I've recently come across a situation where I have some tubes
I think the best approach would be to increase the HV. If you look at the
discussions of glow physics in Weston or Acton for example, the lag in
striking a glow from dark (which is what we're talking about here) is
reduced by using an anode voltage materially above the threshold striking
UV light source, such as from an LED ?
On Wednesday, November 29, 2023 at 6:43:48 PM UTC-8 Jeff Walton wrote:
> I've recently come across a situation where I have some tubes in a clock
> that are being directly driven and are having trouble starting when the
> room is darkened but light right
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