Found in an English publication from the 1980s, this circuit can be built with equivalent transistors such as the BC549. The signal must be applied to an external amplifier.
This circuit provides a few watts of output and can be used in the car as an auxiliary amplifier....
In the figure we have a symmetrical power supply stabilized by a zener diode. Transformer and...
November 2016 - The On Semiconductor Reference Development Kit and WDK1.0GEVK Reference Kit can...