Bookmarking that P-Box link ! Memories of my early teen years. Thanx ! I wouldn't use that variation of a blocking oscillator, they use as their boost supply. That's a favorite circuit of theirs. Anytime they need a pulse train, out comes a center-tapped xfmr, and a xstr. You see it a lot in their 100-in-one projects. PNP germaniums were all over the hobby market back then. It'll work just fine with a GP silicon part. Also flipping the circuit to work with a NPN is pretty straight forward.
With the current market, I'd just go with a modern switching supply, instead of that Radio Shack oscillator, unless you feel the need to replicate it exactly. Good luck finding those Japanese germaniums ! On Tuesday, April 8, 2014 4:40:01 AM UTC-7, jrehwin wrote: > > > Back to blinking neon lamps. Here's the circuit used in that old Radio > Shack kit: > > There's a great resource of the old Radio Shack "P-Box" kits here: > > http://my.core.com/~sparktron/pbox.html > > The 28-130 "Goofy Lite" is there, along with all its instructions. The > page with the schematic is here: > > http://my.core.com/~sparktron/130P6.JPG > > Not too much to it, a 2SB54 germanium PNP transistor driving a 1k:200k > step-up transformer (part number 99-3-203, which is a Radio Shack 273-1376, > which appears to be a Xicon EI-19 core. I doubt this circuit has enough > oomph to light up a nixie, however. It probably only manages 90V or so, at > not much current. > > - 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/911be392-1ea4-462c-835a-b49539454724%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
