This blocking oscillator configuration was found in a 1964 American book. The circuit can be designed with modern transistors and the frequency depends on the transformer.
The circuit shown is intended for the control of stepper motors, producing a pulse sequence...
This receiver, called Peace, was manufactured in the 1960s in Japan and was powered by a 9 V...
This operational clamping circuit was found in an American documentation from the 1980s. The...