This circuit was suggested by Texas Instruments in a 1980s documentation. The transistor must be equipped with a heat sink. The transformer has 10 A secondary current.
This 0.5W amplifier was found in a publication of the 1980s. The output transistors can be the...
This configuration was found in old documentation and is valid for most general purpose NPN...
This SCR circuit was found in an American 1980s documentation. The circuit is still current,...