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.
This transistor circuit was found in Mullard's 1960s transistor manual. The transistors are...
This circuit is from old documentation having a gain of approximately 35 dB at 1 kHz with 2.2 mV...
This small audio amplifier was found in the May 1994 issue of Electronics Now magazine. The power...