Patent ID: 6305365
Filing Date: 2001-10-23
Classification: F02P

Abstract:
An ignition apparatus comprising:a series circuit including a choke coil and first switching means, said series circuit being connected across both terminals of a DC power supply, said first switching means repeating a plurality of turn-on and turn-off periods during one ignition operation;a transformer including a primary winding connected at one end to the junction point between said choke coil and said first switching means through a forward direction diode, and a secondary winding connected to a spark plug,a parallel circuit including an opposite direction diode and a capacitor, said parallel circuit being connected across the junction point between said forward direction diode and the end of said primary winding and the junction point between said first switching means and said DC power supply; andsecond switching means connected between the other end of said primary winding and the junction point between said first switching means and said DC power supply, said second switching means repeating a plurality of turn-on and turn-off periods during one ignition operation.