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Power-up circuit for microprocessor based appliance control

  • US 4,381,459 A
  • Filed: 09/25/1981
  • Issued: 04/26/1983
  • Est. Priority Date: 09/25/1981
  • Status: Expired due to Fees
First Claim
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1. A power-up circuit for a microprocessor based appliance control, the combination comprising:

  • a power source providing power between first and second conductors;

    a first circuit portion connected across said conductors;

    a second circuit portion electrically disconnected from one of said conductors and from said power source by a normally open switch means and including a microprocessor control, said first circuit portion including means for controlling said normally open switch means;

    means for operatively coupling said first and second circuit portions including light actuated means in said first circuit portion for energizing said means for controlling and further including light emitting means in said second circuit portion for illuminating said light actuated means;

    means including a touch switch responsive to manual actuation for energizing said means for controlling independently of said light emitting means to effect initial closing of said normally open switch means and connection of said second circuit portion to said power source, said light emitting means being operable upon connection of said second circuit portion to said power source for emitting light to maintain said light actuated means operable for energizing said means for controlling; and

    means connected to said microprocessor control for controlling operation of said light emitting means responsive to said microprocessor control.

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