Found in an American publication from 1968, this circuit can be made based on a TIP42 that must be mounted on a heat sink. The transformer is 25 V with a current of 3 to 4 A.
This circuit was originally suggested in a 1968 publication to generate a white mark (frame) on a...
This CMOS circuit was found in the July 1990 Radio Electronics magazine. Power is for a 12V...
This is the traditional configuration of an AND gate using an operational amplifier. Operational...