Location of contact faults on electrically conductive cables

Details Location of contact faults on electrically conductive cables Location of contact faults on electrically conductive cables

1979-01-26

1981-07-14

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 65R, G01R 3108

Patent

active

042789311

ABSTRACT:
The invention relates to the location of contact faults on electrically conductive cables such as telephone pairs. Contact fault location apparatus has a pair of resistors, a constant current source, and means such as a differential amplifier and meter for sensing the current flowing in the resistors. A pair of lines to be tested is looped at one end, the apparatus is connected across the other end and the current flowing in the resistors is measured. The ratio of the current is indicative of the distance to the fault.

REFERENCES:
patent: 1034609 (1912-08-01), Friendly
patent: 3358226 (1967-12-01), Clinton
patent: 3705346 (1972-12-01), Jedvall
patent: 3706927 (1972-12-01), Jedvall
patent: 3800216 (1974-03-01), Hamilton

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