Continuity tester using a brush tipped probe

Details Continuity tester using a brush tipped probe Continuity tester using a brush tipped probe

1993-03-01

1995-03-14

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324133, 324537, 439482, G01R 3102

Patent

active

053979966

ABSTRACT:
An electrical continuity tester employing two test probe assemblies (10) (12), one of which employs a conductive brush tip (26) at one end and a solid pointed tip (14) at the other. The brush tip of the probe allows rapid localization of continuity by sweeping the area to be tested with the brush tip of the probe until an audible tone or visual indication occurs. Conducting a point-to-point search within the area previously identified by the brush tip identifies the actual point of continuity. The solid pointed tip of the same probe accomplishes this task. To reduce risk of damage to the circuit under test, the tester applies less than 1 volt through the test probes. The tester employs a pulse stretching circuit to electrically stretch the pulse generated by a successful continuity event to a minimum duration so that even very brief contact duration made by the probes between two points of electrical continuity will result in a clearly audible tone or visual indication.

REFERENCES:
patent: 2806995 (1957-09-01), Meanley
patent: 3777260 (1973-12-01), Davies et al.
patent: 3831089 (1974-08-01), Pearce
patent: 3917995 (1975-11-01), Clinton
patent: 4052793 (1977-10-01), Coughlin et al.
patent: 4056773 (1977-11-01), Sullivan
patent: 4145651 (1979-03-01), Ripingill
patent: 4414506 (1983-11-01), Kelley
patent: 4982154 (1991-01-01), Schwabe et al.
patent: 5276395 (1994-01-01), Malloy

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