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Peak demand limiter

  • US 4,659,943 A
  • Filed: 03/19/1986
  • Issued: 04/21/1987
  • Est. Priority Date: 03/19/1986
  • Status: Expired due to Fees
First Claim
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1. A peak demand limiter circuit for controlling the overall load demand for electrical power in several load circuits by monitoring the same and their connection with a source of electrical power, the peak demand limiter circuit characterized by its monitoring mode that requires no power consumption in said mode, said peak demand limiter circuit comprising a saturable core transformer positioned around said load circuits and a rectifier circuit to modify a signal generated by said saturable core transformer upon any of said monitored load circuits reaching a pre-determined load level, a logic processor in connection with said rectifier circuit and driven by output power from said saturable core transformer via said rectifier circuit, a plurality of gate signal relays responsive to said logic processor, a primary load control circuit and a load triac in connection with said load circuits for interupting said series of said load circuits responsive in operation to said signal generated by said saturable core transformer, means for varying the pre-determined load level by increasing or decreasing amper turns on said saturable core transformers so that said saturable core transformer response can be varied.

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