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 sinusoidal oscillator was found in Radio Electronics in 1989. It uses a 741, but other...
This is the circuit of a commercial flash from the 60’s. The circuit was published by the march...
This circuit is suggested by Motorola in its 1990 Linear Databook. The integrated circuit is no...