This circuit for cars with mechanical ignition systems was found in the Electronics Experimenter handbook from 1991. It inhibits the ignition system, preventing theft.
This circuit, in addition to transforming a sinusoidal signal into a square, shifts its phase. The...
The transistors on this circuit can be the BC548. The circuit is from English documentation from...
In the figure we have three voltage doubler configurations that can be used in high and low...