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PULSE SAMPLING RESISTANCE METERING METHOD AND MEANS

  • US 3,731,189 A
  • Filed: 05/18/1972
  • Issued: 05/01/1973
  • Est. Priority Date: 05/15/1970
  • Status: Expired due to Term
First Claim
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1. A low dissipation system for detecting the electrical resistance of an element while said element is in normal operation in an electrical circuit comprising:

  • a. means for switching through said element a pulse of electrical energy with a regulated first parameter, said pulse of electrical energy defining a pulse state separating adjacent ambient states;

    b. means for sensing a second parameter characteristic of the Ohm'"'"''"'"'s law response of said element to the first parameter of said pulse of electrical energy passing through said element, said second parameter being representative of said element'"'"''"'"'s resistance; and

    , c. sample and hold means for sampling and then holding during the ambient state between pulse states a signal representative of the second parameter response of said element as sensed by said sensing means during a preceding pulse state.

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