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Circuitry for controlling the reflected torque on a generator driven by a fluid meter

  • US 4,489,290 A
  • Filed: 02/25/1983
  • Issued: 12/18/1984
  • Est. Priority Date: 02/25/1983
  • Status: Expired due to Fees
First Claim
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1. In combination with a fluid meter having a rotating output shaft coupled to drive an electrical generator, an arrangement for coupling the output of the generator to a load so that the generator is prevented from supplying output current at speeds of said output shaft below a predetermined threshold speed in order to limit the loading forces applied to said output shaft at those lower speeds, said arrangement comprising:

  • rectifier means for rectifying alternating current to direct current, said rectifier means having an input and an output;

    means for connecting said rectifier means input to the output of said generator;

    threshold means connected to said rectifier means output for preventing the flow of current of said load when the voltage level at said rectifier means output is below a predetermined threshold voltage; and

    current limiting means coupled between said rectifier means output and said load for preventing the current flowing from said rectifier means output to said load from exceeding a predetermined limit value.

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