| 摘要 |
PURPOSE:To reduce the size and to simplify the structure of constant voltage source by feeding gate voltage to at least two power MOSFET from single constant voltage source and controlling the maximum level of drain current to specific level. CONSTITUTION:Power MOSFET 11-14 for feeding the primary coil currents of ignition coils 3-6 continually are provided. Gate voltage of power MOSFET is fed from single constant voltage source 30. Here, the inner constants and the resistors 15-18 of said circuit 30 are set properly to determine the gate voltage of power MOSFET 11 thus to set the maximum level of drain current. Consequently, the size of constant voltage source for limiting the current in electronic distribution igniter can be reduced while the structure can be simplified.
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