| 摘要 |
An ignition circuit according to the present invention has the properties of trigging, i.e. releasing the spark at a predetermined point behind the top of the primary voltage (the ignition generator voltage). During the ascending primary voltage the ignition switch (12) is conducting while a capacitor voltage (UK) is developed. When the primary voltage has passed its top value a potential difference to the capacitor voltage (UK) is created, which is used for the control of the switch to make it break. By the interruption of the primary current an ignition voltage is induced at duty r.p.m. in an ignition coil (11). At an extremely high r.p.m. the ignition is delayed behind the voltage top whereby the induced voltage will be too low for ignition. Too high an r.p.m. is thereby avoided. |
