This circuit has the spark duration controlled by a 555 timer. The circuit was found in the 1990 special issue of Radio Electronics Experimenter magazine.
In this circuit found in a Texas Instruments 2016 documentation we have an adjustment for the...
This circuit is ideal for creating a source that allows the use of automotive power devices on a...
This circuit is from an English publication of 1982. The bipolar transistor can be a BC548 and the...