Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1994-04-05
1996-01-16
Karlsen, Ernest F.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324754, G01R 1073, G01R 3102
Patent
active
054850967
ABSTRACT:
There is disclosed a printed circuit board test apparatus which has a test bed formed by a planar member having a plurality of through channels at close spacing across its surface to receive test probes. Each of the test probes comprises a tubular body having a top contact surface and a socket at its opposite end. A plurality of planar switch cards are provided with each card supporting, along one edge thereof, a plurality of pins which are disposed in rows at locations corresponding to the predetermined locations of the through channels of the test board. Each switch card has a plurality of electrical circuits which interconnect with selected pins and which are connected to selected contacts of a connector located at another extremity of the switch card. The switch cards are supported orthogonal to the planar test bed of the test equipment with the ends of the pins received in recesses of the test probes thereby establishing conductive paths from the surface contacts of the probes to the connector of the card. Each switch card is connected to the remainder of the test circuitry of the test equipment. Preferably components such as switching circuits are mounted on the switch cards to control the test functions of the test equipment.
REFERENCES:
patent: 4352061 (1982-09-01), Matrone
patent: 4465972 (1984-08-01), Sokolich
patent: 4952872 (1990-08-01), Driller et al.
patent: 5159265 (1992-10-01), Alfonso et al.
patent: 5216361 (1993-06-01), Akar et al.
Karlsen Ernest F.
Kobert Russell M.
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