This circuit is from a 1968 Electronic Design. The characteristics of the output transformer are not given and the transistors are of the time. The circuit provides a power of a few watts.
We find this circuit in a 1974 Motorola PUTs (Unijunction Programmable Transistors) documentation. The circuit...
This 2-quadrant modulator circuit was found in the May 1988 issue of Radio Electronics magazine. The...
This circuit can be used in the car to control the windscreen wipper or with other appliances at...