This shield was found on an old EDN. The MOSFET can be of any type according to the controlled load. The power can be between 5 and 15 V typically and can be different for the MOSFET.
In this circuit the triac conducts when switch S1 is opened. We found it in the October 1987 Radio...
This simple transistor gain test acts as an oscillator for the transistor under test. The circuit is...
This circuit doubles the frequency of a rectangular signal applied to its input. The circuit has a...