| 摘要 |
A transistorized ignition device for an internal combustion engine. A dc power source, an engine switch, a grounded contact point, an ignition coil, and an ignition transistor are connected in series for supplying an electric current to a primary winding of said ignition coil from said dc power source when the circuit is conducting. A controlling transistor is coupled in the circuit for controlling the operation of the ignition transistor, the controlling transistor being switched according to opening and closing of the contact point and holding the ignition transistor in a non-conducting state when the contact point is in an open position. A capacitor is connected in parallel with the contact point and is charged when the contact point is in the open position. The capacitor is further connected to the output of the controlling transistor, and a diode is connected between the capacitor and the contact point in the forward direction relative to the charging current for the capacitor. Upon the closing of the contact point the ignition transistor is made conductive by means of the charge on the capacitor.
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