This circuit generates damped sounds imitating a drum or other percussion instrument with alteration of the double T components. We find it in an old American documentation.
This circuit is the power supply for the amplifier in the previous circuit. The transformer is 5 A...
This circuit was found in the 1972 RCA Power Transistor Databook. Transistors are uncommon today,...
This simple power reducer, based on capacitive reactance, was found in a 1995 documentation. The...