| 摘要 |
An electronic starting motor control having low voltage protection. The starting motor has a solenoid coil which when energized causes solenoid contacts to be closed to energize the motor and to move a pinion into mesh with the ring gear of an engine to be cranked. A plurality of parallel connected field effect transistors connect and disconnect the solenoid coil to and from system direct voltage. When system voltage is below a predetermined value the field effect transistors are turned off and are maintained turned off until a start switch is opened. The system will not turn off the field effect transistors when short term voltages occur that go below the predetermined value. Various other circuits are disclosed for turning the field effect transistors on and off.
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