APPARATUS FOR SENSING AND LOCATING SHORTS BETWEEN A PLURALITY N OF ELECTRICAL CONDUCTORS

摘要

The test apparatus for locating electrical shorts that is especially suited for use while an electrical circuit is being fabricated or assembled. A ring counter (11) derives input pulses from a squarewave oscillator (31). The outputs of the counter are fed through transistors (12) to an array of light emitting diodes (14). Each diode is connected to an electrical conductor, such as a bus bar to be tested. In the absence of a short between two electrical conductors, the diodes are sequentially illuminated. When a short occurs, a comparator/multivibrator circuit (21, 35) triggers an alarm (32) and stops the oscillator (31) and the sequential energization of the diodes. The two diodes that remain illuminated identify the electrical conductors that are shorted.