| 摘要 |
The ignition coil has a tapped primary winding which forms a first partial primary portion and a second primary portion, the second primary portion having an inductance which is high with respect to the partial primary portion. A supply circuit, including a controlled switch, is connected in circuit with the first partial portion to energize the partial portion when the controlled switch is closed, so that the partial portion is energized in successive pulses separated by time intervals. A shunt circuit is connected to the second primary portion and carries the induced current during gaps in energization pulses applied to the primary partial portion and arising at the end of the pulses, both the shunt and the main energization circuits being interrupted at the ignition instant to thereby produce a high-voltage pulse in the secondary. The pulsed current supplied to the primary saves current and loading of the ignition coil.
|
