This circuit is an improvement over the previous one, using the same capacitor system as a sensor. We also found it in Radio Electronics from the 80s.
This low Power output stage can source a fraction of watt to a small loudspeaker. The transformer...
This circuit is from a 1995 publication; The current is obtained by dividing 1.25 by R1. The...
This 1968 circuit uses Motorola power transistors of the time, providing 20 W of power with...