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.
This interesting constant current source circuit was found in the September 1989 issue of Radio...
We find this circuit in a 1970 publication. Transistors can be replaced by current equivalents and LDR is...
Employing a unijunction and a triac of the era, this 1964 Electronic Design circuit uses a diac to...