This circuit was found in documentation from the 1980s. The circuit uses several components of the time, which are uncommon today. We must not supply it with a transformerless power supply.
This circuit was found in a Radio Electronics Constructor, English magazine of April 1976; The...
This general-purpose two-transistor circuit was found in the November 1993 issue of Electronics Now. The...
This small power amplifier makes use of an output transformer given its design time. In fact, the...