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.
We found this circuit in the October 1987 issue of Radio Electronics magazine. The circuit uses...
This simple half-wave control using an SCR, which may be TIC106, has been obtained from a US...
This circuit was obtained in an old publication. The FET can also be the BF245. The potentiometers can be...