This circuit was found in a Radio Electronics from February 1966. With it it is possible to trace the curve of a tunnel diode visualizing it on an oscilloscope.
The output current of this power supply depends on the power transistor and the transformer and...
This voltage inverter uses a small transformer. The circuit was found in the April 1995 issue of...
This 1969 Popular Electronics circuit was based on the then recently released BC109, today with...