Found in a Popular Electronics from the 90s, this circuit presents the difficulty of obtaining the Geiger Tube. The other components are common, admitting equivalents.
This circuit is a continuation of the previous one, serving as a protector against overloads in...
This circuit can handle 25 A unde a 32 V voltage using a hight power old transistor. This...
This circuit was found in 80's Popular Electronics. Transistors are commonly used. The...