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Power control for heated windshields

  • US 4,673,797 A
  • Filed: 10/28/1985
  • Issued: 06/16/1987
  • Est. Priority Date: 10/28/1985
  • Status: Expired due to Fees
First Claim
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1. An electrical control system for an automotive vehicle including a battery;

  • an alternator having a field winding;

    a first voltage regulator coupled to the battery, the alternator output, and the alternator field winding for regulating the alternator output at a first regulated uniform voltage; and

    a high-voltage accessory, said control system comprising;

    a second voltage regulator;

    switching means actuable for operatively coupling said second voltage regulator to the battery, the alternator output; and

    the first voltage regulator to cooperate with the first voltage regulator to regulate the alternator output at a second regulated uniform voltage higher than the first voltage to power the high-voltage accessory; and

    protective means for operatively disconnecting the battery from the alternator output when said switching means is actuated to protect the battery from the second higher voltage.

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