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 amplifier with a few watts of power was found in a Japanese technical documentation from the...
This circuit is from a 1977 National Semiconductor integrated circuits manual. The circuit admits...
This conventional power supply uses discrete components and can provide 12 V or 13.6 V output with...