This circuit was found in a 1968 General Electric manual. The circuit is for 3 A motors but can be changed according to the SCR used. The SCR is type 106 and R1 is 10k.
The critical component of this amplifier is the output transformer. We found the circuit in an old...
This circuit was found in the January 1989 issue of Radio Electronics magazine. The circuit sends...
This circuit was found in a 1980s documentation. Q1 and Q2 can be BC548 and SCR a TIC106. The...