[neonixie-l] Divergence Meter
I have made 2 from Tom Titor's website. In my opinion the various construction and info pages on the website are excellent and make it easy to make but you need to read all of them carefully to get the big picture and assemble one correctly. Tom himself is very helpful. I think if someone like me who is really a kit builder can make two then most people here can Regards John -- 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 post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/a8ff7635-045d-4e36-a110-debbe7711697%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Divergence Meter
I have made 2 from Tom Titor's website. In my opinion the various construction and info pages on the website are excellent and make it easy to make but you need to read all of them carefully to get the big picture and assemble one correctly. Tom himself is very helpful. I think if someone like me who is really a kit builder can make two then most people here can Regards John -- 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 post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/b4fd3b0f-ee47-4e78-b50f-cab0951941e3%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Divergence Meter
Thanks Chaps, I'll have a look at Tom's site and also pass the info onto the guy who asked me to make one just so he's happy with the 'Authenticity' as I have never heard of the film / story. I'm with mike on the Dekatrons though!.. -- 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 post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/1d1eeb62-bf99-4887-9d5e-b6493ce9bd10%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [neonixie-l] Re: How to digitally adjust output voltage of Taylor Edge HVPS 1363
Thanks for the detailed description, John. I will do some experiments with the module I have here and report back. I am quite busy at university at the moment so that may take a couple of weeks. Thanks again! Jens Am 10.09.2014 03:15, schrieb taylorjpt: Now that I have you here, can you answer me another question? I was wondering if the circuitry could be tweaked as to allow a maximum output voltage of 250V or even 300V. I will only need a maximum current of 10mA since I want to build a testing stand for single Nixie tubes. If you replace the 30.1K Radj resistor on the module with a 15K resistor (Or put another 30K resistor in parallel) this will change the max feedback current from 165uA (Rbottom = 10K || 30.1K = 7.5K) to about 200uA (Rbottom = 10K || 15K = 6K) or Vmax goes from 200V to 250V. The main output capacitor is rated 250V and since it is a good quality part you should have no problem operating it at 250V. 300V is pushing it but for a test fixture you should be OK for short periods. To get 300V, replace the 30.1K resistor with 10K (Rbottom = 10K || 10K = 5K) to push the feedback current to 240uA. In all cases, the Radj=Open voltage will be about 150V. At 300V the output diode will be seeing about 420V (600V limit) for a 12V input and the main switch will be seeing about 42V (60V limit). At voltages above 200V both the transistor and diode will incur higher switching losses (The diode because of itself and the transistor because of the diode) so keep an eye on the dissipation of both those devices. -- 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 mailto:neonixie-l+unsubscr...@googlegroups.com. To post to this group, send email to neonixie-l@googlegroups.com mailto:neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/77d68cdc-96e5-4e2d-99bf-7049a850dabb%40googlegroups.com https://groups.google.com/d/msgid/neonixie-l/77d68cdc-96e5-4e2d-99bf-7049a850dabb%40googlegroups.com?utm_medium=emailutm_source=footer. For more options, visit https://groups.google.com/d/optout. -- 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 post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5412E209.503%40jb-electronics.de. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Nixie Tube Trouble
My first guess is a bad tube; I cant tell from the picture if they are socketed vs. soldered. If they are socketed, try swapping tubes. Second guess is the high-voltage power supply is just a wee bit low. Not all tubes ionize at the same voltage. Try measuring it; should be 180V or more. If your clock is multiplexed, it's possible though unlikely the anode driver for that digit is weak. If it's direct-drive, it's possible though unlikely the anode resistor overheated and it's resistance increased. I have a few tubes that have poorly-lit cathodes; they were in a batch of used tubes of unknown origin and I suspect they are at the end of their life. I can't rejuvenate them, either. I doubt your tubes are in this condition being only 3 months old. -- 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 post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/fb153a8f-eb60-4dd0-8863-319934b6cd5b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
