Hmm could be, but despite I have heard about it, I am not familiar with the Phamtastron circuit. Does it deliver a sine or an block/pulse at the output? I have to look for some clear theory. eric
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Dekatron42 Sent: maandag 10 februari 2014 16:22 To: [email protected] Subject: Re: [neonixie-l] Elesta EZ10/A/B tester refurbished! Eric, You could build a phantastron circuit with tubes, similar to the dividing stages used in for instance the Tektronix 180a Time-mark Generator, they are quite precis with quality components and easily divide by ten, or whatever number they can be tuned to by selecting component values. The phantastron uses a lot less tubes compared to a binary divider. /Martin On Monday, 10 February 2014 14:10:42 UTC+1, Tidak Ada wrote: Martin, Yes one, but the number needed for a divide by ten counter makes it much more power consuming. The same applies OCXO's and a Rubidium standard. May be I want to make the oscillator to precise, but the final design will probably be quite difficult to set at the right time, so I like to avoid that with a very accurate time keeping element. Thanks for thinking along with me, eric _____ From: [email protected] <javascript:> [mailto:neoni...@ <javascript:> googlegroups.com] On Behalf Of Dekatron42 Sent: maandag 10 februari 2014 13:02 To: [email protected] <javascript:> Subject: Re: [neonixie-l] Elesta EZ10/A/B tester refurbished! Eric, One subminiature thermionic valve will not draw much more power than an EZ10B! I understand if you want to keep it all cold cathode, I did the same a few years ago but never found a cold cathode tube that worked at those speeds in an oscillator circuit. There are a lot of books on crystal oscillators and I think that you could use a crystal oven with either a 1MHz or 100kHz crystal and have a very stable oscillator with those, the TCXO might be somewhat better but with the lower frequency you can just copy a circuit from any old frequency counter. /martin On Monday, 10 February 2014 11:20:12 UTC+1, Tidak Ada wrote: John, Concerning thermionic tubes you are right, but my goal is to use only cold cathode tubes, surely not in the last place to keep power consumption low. A divide by 10 counter, even with submini's or Nuvistors consumes a lot of Watts... eric -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Rehwinkel Sent: maandag 10 februari 2014 3:54 To: [email protected] Subject: Re: [neonixie-l] Elesta EZ10/A/B tester refurbished! > I have a 4MHz TCXO that I have to scle down to 4, 2 ,1, 1/2 and 1/4 Hz. The first stage will be unfortunately made with some TTL, because of I dont know there is any tube that is able to do the job. I can think of lots of tubes that can do that easily. I'd probably use miniature dual triodes for size reasons. - 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 [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/ <https://groups.google.com/d/msgid/neonixie-l/958FB846-0760-43DD-BDAB-722626 457454%40mac.com> msgid/neonixie-l/958FB846-0760-43DD-BDAB-7226264 57454%40mac.com. For more options, visit https://groups.google.com/ <https://groups.google.com/groups/opt_out> 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 neonixie-l+...@ <javascript:> googlegroups.com. To post to this group, send an email to [email protected] <javascript:> . To view this discussion on the web, visit https://groups.google.com/d/ <https://groups.google.com/d/msgid/neonixie-l/d99e21c9-c698-475d-9636-f1c143 7d26de%40googlegroups.com> msgid/neonixie-l/d99e21c9-c698-475d-9636-f1c1437d26de%40googlegroups.com. For more options, visit https://groups.google.com/ <https://groups.google.com/groups/opt_out> 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]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/058572b7-07f3-4187-87fd-c3e3af0 f9c6c%40googlegroups.com. 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]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/!%26!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAAOV2sbXnWxBBqTFBUsSNloQBAAAAAA%3D%3D%40zeelandnet.nl. For more options, visit https://groups.google.com/groups/opt_out.
