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.
Found in a General Electric documentation from 1970, this circuit consists of a relaxation...
This zero crossing switch was found in the 1980s ON Semiconductor thyristor manual. Semiconductors...
This circuit was found in a 1980s documentation. The indicated integrated circuits are uncommon...