Graham, did yo ever try UV-LED's close to the tubes ? And if so, what wavelength is the most efficiënt ? eric
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Grahame Marsh Sent: woensdag 30 januari 2013 21:31 To: [email protected] Subject: Re: [neonixie-l] Re: MTX-90 in counting circuit? I should have added that the main problem with the XC18 is that they don't work reliably in the dark. So overnight the clock will sometimes crash. A fluorescent light or UV lamp keeps it running, but that's not what I really want to do just for a clock. My trigger tube clock is now just a demonstration clock that I fire up when required. This makes the Z70U (or Z700U) more attractive as it has a fourth primer electrode. http://frank.pocnet.net/sheets/030/z/Z70U.pdf and an application note http://frank.pocnet.net/sheets/152/suppinfo/Z70UZ70W.pdf I bought enough Z700U for a clock from (no connection) but not progressed it yet (having too much fun with CRTs) michael rotenberg [email protected] But you might build an experimental MXT-90 ring and see how it runs in the dark? Grahame On 30/01/2013 19:15, William Lee wrote: Thanks for the reply. I'm familiar with Grahame's excellent work and some of the Dance circuits. I just wasn't sure if I am missing anything when considering the MXT-90s for this type of project. They have a cathode/anode and a control electrode so I thought they would work in a counting circuit, but I wasn't sure if I was missing something more subtle that would make them problematic as a choice. On Wednesday, January 30, 2013 1:55:47 PM UTC-5, threeneurons wrote: Grahame Marsh made a whole nixie clock using them. Here's his page on it: http://www.sgitheach.org.uk/ <http://www.sgitheach.org.uk/nixie3.html> nixie3.html With some "tweeking" (adjusting some part values) it should be doable with any trigger tube. Grahame's page also references the J.B. Dance book, where all kinds of counting techniques are covered. On Wednesday, January 30, 2013 8:49:50 AM UTC-8, William Lee wrote: I may be demonstrating my glaring lack of electronics knowledge with this question, but I figure I will learn something from it either way... Is it possible to use MTX-90 thyratrons as trigger tubes in a ring counter circuit to build a time keeping device with them? My inspiration in asking this question is from other member's designs that have been done with XC18 triggers or neon bulbs that use mains for timing pulses across multiple ring counting circuits. -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/ij8klWG11OMJ. For more options, visit https://groups.google.com/groups/opt_out. -- 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 [email protected]. To post to this group, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out. -- 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 [email protected]. To post to this group, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
