Continuous motion electrical circuit interconnect test method an

Details Continuous motion electrical circuit interconnect test method an Continuous motion electrical circuit interconnect test method an

1995-12-19

1997-01-21

Karlsen, Ernest F.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324537, 324690, G01R 106, G01R 2726

Patent

active

055962831

ABSTRACT:
Electrical test method and apparatus for performing the method. The method operates to determine an electrical characteristic of a node (2) disposed upon a surface of a substrate (3), such as a printed wiring board (PWB). The method includes a first step of providing relative motion between a probe (1) and the surface of the PWB. A second step measures the electrical characteristic during a time that there is relative motion between the probe and the surface of the PWB. In one embodiment of the invention the step of measuring measures capacitance while in another embodiment of the invention the step of measuring measures charge capacity. The step of providing relative motion, in one embodiment of the invention, includes the steps of maintaining the PWB stationary while linearly translating the probe over the surface. In another embodiment of the invention the step of providing relative motion includes the steps of maintaining the probe stationary while moving the PWB.

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"Testing of Printed Circuit Boards With Movable Probes Before Mounting Components", J. A. Conti, Elektronik Produktion and Pruftechnik, Mar. 1987, pp. 70-72.

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