×

Optical voltage reference

  • US 5,307,006 A
  • Filed: 09/09/1992
  • Issued: 04/26/1994
  • Est. Priority Date: 09/09/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus for providing an optically coupled, ultra-high precision, isolated reference voltage comprising:

  • means for providing an unregulated voltage source;

    a precision voltage reference means for generating a voltage output in a set range where said precision voltage reference means is coupled to said unregulated voltage means;

    means for converting said voltage output from said precision voltage reference to a pulse rate frequency modulated signal;

    an optical isolator means for converting said pulse rate frequency modulated signal to an optical signal which is then transformed back to a second pulse rate frequency modulated signal and where said optical isolator is coupled to said voltage converting means;

    means for synchronizing said second pulse rate frequency modulated signal with a reference signal from said synchronization means where said synchronization means is coupled to said optical isolator;

    means for demodulating said frequency modulated signal and converting said demodulated signal to a voltage signal where said demodulating means is coupled to said synchronizing means;

    a driver amplifier coupled to said demodulating means;

    an isolated power supply where said isolated power supply is coupled to said demodulating means, said synchronization means, and said driver amplifier; and

    means for controlling the environment of the apparatus minus said unregulated voltage means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×