And GDT125T or GTD125M ? As far as I know they are also developed to manage dekatrons. Unfortunately the GDTx' are not very speedy... eric
_____ From: [email protected] [mailto:[email protected]] On Behalf Of threeneurons Sent: donderdag 31 januari 2013 4:01 To: [email protected] Cc: [email protected] Subject: Re: [neonixie-l] Re: MTX-90 in counting circuit? Unfortunately, the only trigger that has the proper signal levels to commutate a dekatron properly is the Ericsson GTE175M: http://frank.pocnet.net/sheets/022/g/GTE175M.pdf A dekatron's guides need to see an incoming signal of a very minimum of 60V transition, negative. Its outputs a signal that only goes ~20V, and in the wrong direction. Most triggers need a larger incoming signal. The GTE175M can do the job. All the other ones I've seen can't. In the old days, the interconnecting stage, between dekatrons was usually a vacuum tube triode. The favorite was a 12AT7. Look at figure 4, in this document: http://frank.pocnet.net/sheets/084/7/7155.pdf On Wednesday, January 30, 2013 1:19:28 PM UTC-8, Smiffy wrote: But this thread is rather timely - just yesterday I went back to trying to figure out how to cascade A101 Dekatrons to form a clock/calendar. Whilst I'd figured a simple way to do it, using a tiny microcontroller between each stage (which also makes it easy to set,) barring the initial timing source, I wanted to stay away from silicon if possible. Would something like an XC18 (now that I've located a source,) be suited to this task? (Sufficiently illuminated, that is.) -- 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/-/744HLDyK7w4J. 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.
