Geiger counter with high voltage source (CB22333E)

This circuit includes a high voltage inverter to power a Geiger tube. We found it in an American documentation from the 60s.

Two Power Loads by One Cable Control (CB19044E)
This interesting control circuit was found in an Electronics Now from 1988. Through it we can...
Random Neon Flasher (CB13583E)
This circuit causes neon lamps to flash randomly from a low voltage supply (1.5 to 3 V). The...
Relaxation with Operational (CB15020E)
Any operational amplifier, like the 741, can be used on this oscillator whose frequency depends on R1...