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Test apparatus for locating shorts during assembly of electrical busesA test apparatus is described for locating electrical shorts that is especially suited for use while an electrical circuit is being fabricated or assembled. A ring counter derives input pulses from a square wave oscillator. The outputs of the counter are fed through transistors to an array of light emitting diodes. Each diode is connected to an electrical conductor, such as a bus bar, that is to be tested. In the absence of a short between the electrical conductors the diodes are sequentially illuminated. When a short occurs, a comparator/multivibrator circuit triggers an alarm and stops the oscillator and the sequential energization of the diodes. The two diodes that remain illuminated identify the electrical conductors that are shorted.
Document ID
19820016544
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Deboo, G. J. (NASA Ames Research Center Moffett Field, CA, United States)
Devine, D. L. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 4, 2013
Publication Date
April 8, 1981
Subject Category
Electronics And Electrical Engineering
Accession Number
82N24420
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-ARC-11116-1|US-PATENT-4,282,479
Patent Application
US-PATENT-APPL-SN-069485

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