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Electronic control equipment

  • US 4,697,229 A
  • Filed: 02/05/1986
  • Issued: 09/29/1987
  • Est. Priority Date: 02/08/1985
  • Status: Expired due to Fees
First Claim
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1. A circuit for automatically controlling an electrical system including a regulating element so as to avoid abrupt increases in output when the power supply is reconnected after an interruption, comprising:

  • means for detecting a voltage on a supply rail and for producing an output when the voltage is greater than a predetermined value;

    reservoir means whose output is connected to the output of said detecting means;

    level detection means whose input is connected to the output of said reservoir means and which produces an output if the reservoir level falls below a predetermined value;

    and control voltage generating means having an input connected to the output of said level detection means, said control voltage generating means being adapted to generate a control voltage for the regulating element which decreases abruptly when the generating means receives an inhibiting input and increases progressively at a predetermined rate from a low level, when the inhibiting input is removed;

    whereby the occurrance of an interruption of the supply rail voltage causes an output from the level detection means which inhibits the control voltage generating means.

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