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 circuit was found as part of another project in a January 1988 Radio Electronics magazine. The...
This circuit was obtained in an Electronics Now of the 90s. The circuit monitors the DIN connector of...
This circuit can be implemented with discrete transistors. We found it in General Electric's 1964...