The integrated circuit used is no longer common today. The circuit is from Motorola's 1990 Linear Databook. The characteristics are given in the table.
With its high power and high performance, this power amplifier is ideal for high quality sound...
One touch on S1 and the circuit turns on. With a tap on S2 it turns off. This is the purpose of...
Found in a 1960 Sylvania manual, this circuit is intended to measure audio signals frequency....