This small audio amplifier circuit in complementary symmetry was found in the 1974 Mullard Databook. The output pair can also be the BD135 and 136.
This Audio System circuit was found in 1965 documentation. It is a 50 ohm line circuit with 22 dB...
This 1.5 A circuit has the output voltages adjusted by a selector switch. We found it in a Popular...
Three LM158, LM258, LM358, or LM2904 operational amplifiers are used in this instrumentation amplifier....