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.
This circuit without any capacitor operates based in the time the transistor need to turn on. The...
This old version of analogue switch was found in a 1969 documentation. Components of the time are...
This circuit is from an old American documentation. In it we have a simple way to fire an SCR from...