Found in 90s Popular Electronics, this circuit fires a load through a MOSFET from an audio signal applied to the input. Power supply is done according to the load.
Two operational amplifiers 741 are used in this circuit that must be powered by a symmetrical...
This low frequency circuit was found in documentation from the 1980s. The values of R and C...
This temperature compensated circuit was found in a 1980s American documentation. The power supply...