This circuit is from a Radio Electronics from October 1970. The circuit uses transistors from that era and has a low impedance output. The resistance R1 depends on the impedance of the input signal.
July 2017 - The Texas Instruments TAS5782M Closed Feedback- Class D Amplfier Evaluation Module can now...
This circuit can be controlled by pin 1 through the output of a microcontroller functioning as a...
Found in a documentation for radio amateurs from the 90s, this circuit is suitable for RF...