Four-terminal ohmmeter apparatus

Details Four-terminal ohmmeter apparatus Four-terminal ohmmeter apparatus

1995-02-21

1996-04-16

Regan, Maura K.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

439669, 324713, G01R 2726

Patent

active

055086217

ABSTRACT:
A test lead set for a four-terminal ohmmeter comprises separate conductor pairs with one conductor of each pair connected to a source while the other conductor of the same pair is connected to a meter. The conductor pairs, which are received within separate insulating shrouds, are provided at their remote ends with bifurcated clips having jaws for making individual connections between the conductor leads and a terminal of a device under test. The test lead set is coupled to the measuring instrument by banana-type plugs having separated conductive portions for engaging contacts within instrument receptacles so that separate connections to the source and measuring device can be maintained. The instrument receptacles are backwards compatible with a conventional, two-terminal, test lead set.

REFERENCES:
patent: 1654278 (1927-12-01), Yaxley
patent: 1819040 (1931-08-01), Schellenger
patent: 2569098 (1951-09-01), Hendricks et al.
patent: 2583130 (1952-01-01), Wrolson et al.
patent: 2819448 (1958-01-01), Neeper
patent: 2839723 (1958-06-01), Armond
patent: 2857570 (1958-10-01), Simpson
patent: 3068403 (1962-12-01), Robinson
patent: 4934367 (1990-06-01), Daglow et al.

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