We found this circuit in a Motorola manual. The circuit has the capacitor charging at 15 to 30 V, then discharging through the coil and generating a voltage that reaches 500 V for the spark plugs.
With a unijunction transistor and a tunnel diode it is possible to obtain rise times of 1 ns with...
This circuit was found in old English documentation. It can be improved by using resistors of...
This circuit is from Delco Radio found in a 1968’s documentation. The transistors are of the time...