Would be nice David! I hope it doesn't cost too much of work, but I really appreciate your offer. Even if I decide not tu build it it will be fine reading
eric -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Forbes Sent: maandag 10 februari 2014 22:58 To: [email protected] Subject: Re: [neonixie-l] Elesta EZ10/A/B tester refurbished! Eric, I have a textbook "Digital Logic Circuits" or similar that describes it in depth. I will see about scanning it. On 2/10/2014 1:51 PM, Tidak Ada wrote: > Yes, I found a HP pre-nixie counter that uses it, but no clear theory. > > eric > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of David Forbes > Sent: maandag 10 februari 2014 21:00 > To: [email protected] > Subject: Re: [neonixie-l] Elesta EZ10/A/B tester refurbished! > > On 2/10/2014 12:44 PM, Tidak Ada wrote: >> 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 > > Eric, > > Google does not help with the Phantastron, as someone borrowed the name for > a product. > > The circuit is also called a Miller sweep circuit. It is used in > oscilloscopes, and in old digital pulse circuits as a frequency divider. A > pentode tube generates a sawtooth wave, and is triggered to reset by a > synchronizing signal only when near the end of the sweep. > > Look at any old HP frequency counter for a decimal divider using the > Phantastron. They were also used in early television sync generators. This > is why the old television line count was a product of small numbers such as > the US 525 line TV: 525 = 5 * 5 * 7 * 3. > > --David Forbes -- 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/52F94B7B.9060908%40dakotacom.ne t. 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!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAAImDAFkkNOpJgGQF2pe4cjEBAAAAAA%3D%3D%40zeelandnet.nl. For more options, visit https://groups.google.com/groups/opt_out.
