Re: [neonixie-l] Re: Sperry radar clock now working!

2014-08-11 Thread Morris Odell
Thanks to everyone who responded.It seems that the half wave diode trick is the way to go. Clocks using real nixies of course start instantly when the PIR triggers and you sort of expect that from other clocks too. The CRT is a 7ABP7A and they are not too hard to find. I think I have a spare

[neonixie-l] Re: Anita MK8 Calculator Video

2014-08-11 Thread Dekatron42
I found some more pictures and restoration information here: http://www.gloeidraad.nl/radioforum/index.php?id=177352 /Martin On Friday, 8 August 2014 08:51:43 UTC+2, threeneurons wrote: Here's the link to a youtube video of an Anita MK8 calculator that was just restored:

[neonixie-l] Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread 'Alaba Baju' via neonixie-l
Hi people!, Thanks to whoever approved my group joining request :) I own a few tubes, the IN-1 and the IN-9. Never powered a nixie device before, I'm building a switch mode boost converter and I have a few questions please! I understand the IN-1 needs about 170v to light up and about 133v to

[neonixie-l] Re: Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread gregebert
I dont recommend the IN-1; it's a low-quality tube. See my other postings about it. You should think of nixie tubes as current-controlled devices; it requires a certain amount of current to produce the desired brightness. As with any device, you dont want to exceed the maximum recommended

Re: [neonixie-l] Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread Arne Rossius
Hi, 'Alaba Baju' via neonixie-l wrote: I understand the IN-1 needs about 170v to light up and about 133v to stay on. One thing I've noticed though is that most people only seem to build switching supplies for the higher voltage. I don't understand! The higher voltage (ionization voltage) is

[neonixie-l] Re: Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread gregebert
I had a brain-meltdown and didn't realize you were making a battery-operated device. The wristwatch I'm working on right now has a DC-DC converter (flyback converter) that boosts 3.7V to about 180V to ionize my display, and then throttle-back to around 140 to 160V to save some battery energy.

Re: [neonixie-l] Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread 'Alaba Baju' via neonixie-l
Thanks a LOT Anne! I'm finally understanding that it's sort of like an LED! To test if I understand it properly, would I be correct if I simply connect the nixies to 180v and use a BJT current limiter to limit the current to 2mA? On Monday, 11 August 2014 22:06:57 UTC+1, Arne Rossius wrote:

[neonixie-l] Re: Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread 'Alaba Baju' via neonixie-l
On Monday, 11 August 2014 22:26:30 UTC+1, gregebert wrote: I had a brain-meltdown and didn't realize you were making a battery-operated device. The wristwatch I'm working on right now has a DC-DC converter (flyback converter) that boosts 3.7V to about 180V to ionize my display, and then

Re: [neonixie-l] Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread David Forbes
On 8/11/2014 2:46 PM, 'Alaba Baju' via neonixie-l wrote: Thanks a LOT Anne! I'm finally understanding that it's sort of like an LED! To test if I understand it properly, would I be correct if I simply connect the nixies to 180v and use a BJT current limiter to limit the current to 2mA? It

Re: [neonixie-l] Nixie Ionisation and Maintaining Voltage

2014-08-11 Thread gregebert
Thanks a LOT Anne! I'm finally understanding that it's sort of like an LED! To test if I understand it properly, would I be correct if I simply connect the nixies to 180v and use a BJT current limiter to limit the current to 2mA Yes, I would recommend that. Make sure your NPN is rated

[neonixie-l] Re: Blue glow from Nixie Tubes - is that bad?

2014-08-11 Thread gregebert
For the most part, I've only seen a single small blue dot when a tube has been in-storage for a long time, perhaps years. For example, after I buy a few tubes one may have a blue dot. They always disappeared after a few hours of operation. I do have 2 other tubes that have a very small

[neonixie-l] Re: Blue glow from Nixie Tubes - is that bad?

2014-08-11 Thread Dman777
No blue dot...this is a very small blue glow similar to a bottom of a flame it outlines the nixie wire that glows orange. It's only on the tubes that are effected from the strobe issue I mentioned earlier. On Monday, August 11, 2014 6:33:39 PM UTC-5, Dman777 wrote: My In-12 Nixie clock

Re: [neonixie-l] Re: Blue glow from Nixie Tubes - is that bad?

2014-08-11 Thread David Forbes
That purple glow or haze is a result of the mercury that is put in Nixie tubes to make them live longer. It is normal. On 8/11/14 10:46 PM, Dman777 wrote: No blue dot...this is a very small blue glow similar to a bottom of a flame it outlines the nixie wire that glows orange. It's only on