Geiger counter circuits

Conundrum, Sun Mar 16 2008, 12:19PM

Geiger counter circuit I found online.
1205669942 96 FT0 Geiger
Re: Geiger counter circuits
uzzors2k, Sat Mar 22 2008, 08:09PM

Update: This one works better and has a LED, that other one was just a preliminary test circuit. Here's where I took most of the circuit from. Link2
Re: Geiger counter circuits
Conundrum, Mon Apr 28 2008, 08:27PM

Thanks Uzzor! :) this makes life a lot easier since I have the correct sized zeners already.

wonder if it will work with the microscopic transformer from the Kodak "Fun" flash. Pen sized Geiger anyone?


I was looking into using a small LCD display from an old step counter as the radiation indicator but the problem here is connecting to it. Perhaps some sort of bargraph (made one of these a while back out of a cheap pen mains sensor)

-A