Ignition device for an internal combustion engine

摘要

An ignition device for an internal combustion engine comprises a generating coil, an ignition circuit including an ignition capacitor, a signalling coil connected to the ignition circuit, and a switching means which renders the ignition signal to become ineffective on the basis of the latter half cycle of the ignition signal generated from the signalling coil and renders the ignition signal to become effective by releasing the ineffective condition of the ignition signal on the basis of the former half cycle, whereby the ignition signal is supplied to the ignition circuit within an ignition signal ineffectual period.