Understanding Geiger Counter

Discussion in 'General Electronics Chat' started by jeff8j, Jul 29, 2010.

  1. jeff8j

    Thread Starter New Member

    Jul 29, 2010
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    Im trying to figure out a bit about a geiger counter and would like to attempt to make one. From what I can tell its just a tube with gas that when radiation of some sort passes through the gas is becomes conductive and the inner rod connects to the outside tube completing the circuit. I find everything online requires a 500v(or so) ac transformer. My question is why is ac necessary couldnt I do the same thing alot easier with dc voltage?
     
  2. bertus

    Administrator

    Apr 5, 2008
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