| 摘要 |
A vehicular power generation control device has a voltage control circuit, a power supply circuit and a power control circuit. The voltage control circuit controls the field current of a power generator by turning on and off a transistor. The power control circuit has an ignition switch closure detection circuit and an engine rotation detection circuit. When a closure of the ignition switch is detected by the ignition switch closure detection circuit, an operation of the rotation detection circuit is stopped. When the closure is not detected, the operation of the rotation detection circuit is started.
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