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Current measuring apparatus using light-emitting devices

  • US 4,378,496 A
  • Filed: 10/22/1980
  • Issued: 03/29/1983
  • Est. Priority Date: 10/29/1979
  • Status: Expired due to Term
First Claim
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1. A device for measuring current comprising:

  • electroluminescence means for generating light within first and second dissimilar wavelength intervals in response to stimulation by said current such that said electroluminescence means is modulated by said current;

    said electroluminescence means further comprising a material compositionally formed and dimensioned such that said light exhibits a plurality of non-uniform current dependencies;

    at least one optical fiber optically connected to said electroluminescence means;

    first and second photo-detectors each optically connected to said at least one optical fiber and respectively having first and second sensitivity spectra and respectively adjusted to said first and second wavelength intervals such that said first photo-detector selectively senses said light in at least a portion of said first wavelength interval and said second photo-detector senses said light in at least a portion of said second wavelength interval.

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