Test fixture with test function feature

Details Test fixture with test function feature Test fixture with test function feature

1993-01-06

1994-05-10

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158P, G01R 3102, G01R 1073

Patent

active

053111206

ABSTRACT:
An apparatus is provided for testing both the integrity and the functionality of the electrical circuit tracings on a printed circuit board. The apparatus is a bed-of-nails test fixture. The device has a plurality of parallel test probes affixed to the bottom plate of the fixture. The plurality of test probes consists of a plurality of short probe members and a plurality of long probe members. The height of the long probe members is telescopically alterable between the height of the short probe members and the maximum height of the long probe members. The long probe members have an internal spring which tends to maintain the long probe members at their maximum height. The device also has two slide bars disposed on opposite sides of the fixtures. The slide bars have a plurality of key hole shaped apertures. Affixed within the bottom plate of the fixture is a corresponding plurality of holding pins, each having a head dimensioned to pass through the wide portion of a key hole shaped aperture but not the narrow portion. Each of the holding pins is aligned with a corresponding key hole shaped aperture.

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