×

Linear ECL distance measuring gauge

  • US 4,000,459 A
  • Filed: 10/24/1974
  • Issued: 12/28/1976
  • Est. Priority Date: 10/24/1974
  • Status: Expired due to Term
First Claim
Patent Images

1. In an eddy current loss proximity distance measuring gauge comprising an eddy current loss oscillator including a feedback voltage controlling tuned circuit including a coil whose Q is varied when a magnetic target is brought into the magnetic field generated by said coil, said Q variation creating a change in the amplitude of the oscillations produced by said eddy current loss oscillator, the improvement comprising a linearizing circuit connected to said eddy current loss oscillator so as to sense the amplitude of the oscillations created by said eddy current loss oscillator and control, in a linear manner, the relationship between the amplitude of said oscillations and the distance between said coil and said metallic target.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×