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.
The presented circuit uses an operational amplifier that is uncommon nowadays, but it can be...
This circuit was obtained in an English magazine from 1978. We can easily assemble it because all...
This configuration similar to many of this site was found in 1965 General Electric documentation. Modern...