Method and apparatus including resonant termination for detecting insulation dielectric discontinuities in electric cable
Abstract
Abstract D R A W I N G A METHOD AND APPARATUS FOR DETECTING DISCONTINUITIES IN THE INSULATION OF AN ELECTRIC CABLE WHEREIN A STRESSING VOLTAGE IS APPLIED TO THE CABLE TO CAUSE IONIZATION OF DIELECTRIC DISCONTINUITIES WITHIN THE CABLE. THE IONIZATION IS DISCHARGED TO PRODUCE A SIGNAL HAVING A RADIO-FREQUENCY COMPONENT AND THE RADIO-FREQUENCY COMPONENT DETECTED BY MEANS OF A RESONANT DETECTOR. RESONANT TERMINATION MEANS ARE PROVIDED FOR TERMINATING THE CABLE WITH RESPECT TO THE RADIO-FREQUENCY COMPONENT IN THE CHARACTERISTIC IMPEDANCE OF THE CABLE THUS PRESENTING A LOW IMPEDANCE TO THE RADIO FREQUENCY COMPONENT SIGNAL AND A HIGH IMPEDANCE TO OTHER SIGNALS. THIS PROVIDES A DETECTED RADIOFREQUENCY COMPONENT SUBSTANTIALLY FREE OF INTERFERENCE FROM REFLECTED SIGNALS.
Inventors
- 👤 David Eigen
Bibliographic Details
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