This medium power circuit is from an English publication from 1989. The integrated circuits are of types that are still obtainable. The power supply must source at least 2A.
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The transistors of this circuit found in a 1992 Electronics Handbook can be the BC558 and the 6 V...
This 600-ohm output impedance circuit was found in a Radio Electronics from October 1963. The...
Used in radio reception, this circuit was found in the February 1983 Radio Electronics magazine. The...