This circuit was found in a 1965’s General Electric documentation. It is intended for low voltage brush motors. The SCR must be according to the engine controlled.
This circuit uses a current regulator from the 90's. This component is uncommon nowadays. The...
This interesting amplifier for frame antenna for the medium wave range was found in a Popular...
This is the typical circuit of a local oscillator for a superheterodyne FM receiver. The circuit...