Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1986-06-02
1989-09-12
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324 73PC, 324 73AT, G01R 3102, G01E 1512
Patent
active
048663751
ABSTRACT:
Disclosed is a test fixture which electrically tests units which have on-grid and off-grid test sites defined by holes. The central feature of this test fixture is the use of an array of flexible test probes which are arranged in an on-grid configuration. Each probe has a conical tip which is inserted into the hole, ahead at the end of a shaft which engages electrical test equipment, and a flexible shaft which connects the head to the tip. A table provides a generally flat surface which is moved in two directions in the same plane, generally at 90.degree. relative to each other. The unit being tested is placed on the surface of the table so that the test sites are presented to the probes and are aligned so that the test sites which are on-grid are in registration with the tips of the test probes. The probes and unit are brought into engagement with each other and the table is actuated. The probes tips slide freely over the surface of the unit being tested and, when they pass a hole, drop into it. The table is moved in a zig zag manner, a pre-determined distance in the X and Y directions, so that the probe's shaft is not bent beyond its elastic limit. Thus, when the probe is withdrawn from the hole, the shaft will flex and return to its on-grid position. When all of the probes have been captured in the correct holes or test sites, the electrical test is conducted and then the unit and probes disengage.
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Eisenzopf Reinhard J.
Nguyen Vinh P.
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