Indicated for activation by microcontrollers, this circuit was found in the Radio Electronics magazine of December 1987. The MOSFET can be of any type according to the buzzer.
Found in a 1966 Electronics World, this circuit applies to the protection of any analog...
We found this circuit in an English documentation from the 80's. The circuit can make use of...
The power of this converter is not the greatest, it can only supply small fluorescent lamps,...