Found in a 1980s American documentation, this circuit inhibits ignition. The circuit is valid for cars that use contact breaker (old types).
This circuit appears in various parts of this site and this section, with diverse origins. This is from...
We found this circuit in a 1964 Electronic Design. Transistors can be modern general-purpose...
This circuit can be used to add a delay to a logic signal as shown by the input and output...