| 摘要 |
A vehicle electronic controller comprises a load such as electric motor or one or more solenoids each connected in series to a power supply; a load state detection sensor for detecting the state of the load; a required minimum drive voltage calculation microprocessor for calculating a required minimum drive voltage which is a drive voltage to be supplied to the load and which is a required lowest voltage, based on the state of the load detected by the load state detection sensor; and a power supply relay circuit arranged between the power supply and the load for transforming a power voltage supplied from the power supply into the required minimum drive voltage calculated by the required minimum drive voltage calculation microprocessor to supply the transformed voltage as the drive voltage to the load.
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