Found in an Electronics World of 1968 this circuit can use any SCR and diodes depending on the load. The circuit is full wave and the unijunction can be 2N2646.
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...