On Aug 20, 8:13 am, Jon Jackson <jondad...@gmail.com> wrote: > Does anyone still have this document available or a link to it? I have > some IV-4s as well as IV-17s to use in a 4play display.
I got a question off-list which I figured would be useful to answer here. The Elektronika 7-06 / 7-06K clocks use an IV-4 as a blinking colon indicator, with all 18 elements wired together: http://www.tmk.com/blog/6F5S8748-s.jpg Even on Elektronikas which have been running for nearly 30 years and have the worst tube wear on the IV-26 tubes, like this eBay auction: http://www.ebay.com/itm/221110674946 (no affiliation with the seller, just a convenient example) the IV-4 is still in very good condition. That's with a 50% duty cycle, cycling on and off every second. Even a 1990 Elektronika manual, toward the very end of production, still lists the tube as an IV-4. All of the tubes I've seen have been completely unlabeled - perhaps because the tubes were made by the same factory that built the clocks, they didn't bother with individually marking them with part numbers and OTK inspection. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
