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This circuit is from a 1967 RCA SCR manual. The circuit uses components from the era that can be replaced by modern equivalents. The transformer is 12 V x 1.2 A.
This 1-transistor Hartley oscillator generates an audio signal that is dependent on capacitor C1....
This modulator circuit can be used in AM transmitters up to about 10 W of power. The TDA2002 must...
This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for...