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Electrical power control apparatus and methods

  • US 4,961,047 A
  • Filed: 10/24/1989
  • Issued: 10/02/1990
  • Est. Priority Date: 11/10/1988
  • Status: Expired due to Fees
First Claim
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1. Electrical power control apparatus comprising:

  • a power supply unit, said power supply unit being arranged to deliver an alternating power output signal;

    store means including a plurality of storage locations, each of said storage locations containing information for use in providing an input signal, means for supplying said input signal to said power supply unit such as to control the level of the power output signal in accordance therewith;

    means for deriving a first digital signal representative of the voltage and current of the output signal;

    means for deriving a second digital signal representative of a performance characteristic of the apparatus, wherein the first and second digital signals together define the location of one of said storage locations such that as the output voltage, current or performance characteristic changes a different one of said storage locations is addressed and said input signal is varied accordingly to control said output signal.

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