Information about the high voltage transformer and the detecting circuits was not given in this project by Electronics Engineering. The Geiger valve is the critical component in this project.
This receiver with two common JFETs was found in an old English documentation. The phone is...
This TTL circuit with the 7493 makes the binary count of the pulses sent by a flip-flop with the...
This circuit was found in a Popular Electronics from the 90s. The counter circuit is not common...