This differential amplifier, found in a 1964 Electronic Design, has a gain of 30. The setting can be applied to modern equivalent transistors.
This configuration was found in an English magazine from 1965. It is valid for any junction FET. The...
Operated directly from the power grid, this detector was found in an 80's RCA documentation. The sensor is...
This circuit can control the power from 0 to 70% of the maximum power on a load. The circuit was...