Found in documentation from the 1980s, this highly sensitive circuit is based on the conduction by the presence of gas from an ionization chamber. The components are from the time.
This circuit was found in a 1980 publication. It uses only 3 easily obtainable transistors. It is a...
This circuit was published in an English magazine from 1977, but remains current, as we can...
The circuit shown is intended for cable testing, providing status indication via LEDs. The number of...