This 1.5 A circuit has the output voltages adjusted by a selector switch. We found it in a Popular Electronics from the 90s. The integrated circuit must have a heat sink.
We found this circuit in a Popular Electronics from 1992. The transistor is general purpose,...
This circuit is placed after the IF of a receiver to receive SSB and CW signals. The circuit uses...
Found in a RCA manual from the 1960s, this circuit uses components from that time. It can generate...