This high-power amplifier with only 4 integrated circuits was found in the 1990 special issue of Radio Electronics Experimenter magazine. The circuit reaches 100 W per channel.
This circuit, which presents a certain danger and should be used with caution, was found in the...
This circuit with variable capacitance diode (varicap) is from a publication from the 90s. The...
This circuit, shown in the figure, consists of a variable gain amplifier with differential input...