The TAA865 integrated circuit used in this 1986 project is no longer common today. The circuit is a documentation of the time and the time is given by RC that has indicated the maximum values.
Although MOSFETs of the type indicated are not very easy to obtain, one can have the circuit as a...
This power source takes advantage of an old valve transformer that is no longer used and can...
Found in 90s Popular Electronics, this circuit fires a load through a MOSFET from an audio signal...