This circuit was found in American documentation from the 90's. The circuit applies to any operational. The power supply can be between 5 and 15 V depending on the operational.
This symmetrical source was obtained from Popular Electronics from February 1979. Transistor Q1...
This field effect transistor amplifier circuit in common gate or common port configuration is from an old...
This circuit synthesizes the tick of a metronome with the speed controlled in RV1. The circuit is...