I hope I can be forgiven for this.. ;) I had a TIA in February and my head still isn't working quite right..
Going to have to work on my OLD (1962) GM tachometer. It will only go up to 3,000rrpms, then stop. It really doesn't 'look' like the meter movement sticks at that point, though I guess it could.. I understand the circuit operation up to a point. It's pretty simple. I'm not sure of the part I circled. Do C2, CR2and CR3 make up a voltage doubler? Also what is VR1 for. They suggest using two 9vdc zener diodes stacked cathode to cathode as a replacement. [image: tach.sch1.5.png] -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/9f464b84-4da8-4f97-a8bd-83b35b519fe1n%40googlegroups.com.
