This circuit is from a 1968 Electronic Design. The characteristics of the output transformer are not given and the transistors are of the time. The circuit provides a power of a few watts.
Found in the 1991 Electronics Experimenter Handbook, this circuit detects voltage variations in...
This well-designed 4-transistor JFET audio oscillator circuit was found in the June 1969 issue of...
This filter is intended for 60 Hz noise suppression in amplifiers. We found it in American...