Patent ID: 7107977

Claim:
An ignition apparatus for an internal combustion engine, which is controlled by a control unit, the ignition apparatus comprising: a connector that is electrically connected with the control unit and includes: an input terminal, which is electrically connected with the control unit to receive an ignition signal outputted by the control unit; and a ground terminal, which is connected with a ground; an ignition coil assembly that is connected with the connector; an igniter that includes: a switching device that switches a coil current supplied to the ignition coil assembly based on the ignition signal received from the control unit through the connector; and a Zener diode that serves as a protection element of the switching device, wherein the Zener diode is provided between the input terminal and the ground terminal; and a capacitor that is provided in parallel with the Zener diode between the input terminal and the ground terminal to form a parallel circuit.