Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1998-11-06
2000-12-12
Nguyen, Vinh P.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324761, G01R 1512
Patent
active
061604097
ABSTRACT:
An inspection apparatus inspects an electronic circuit board on which a plurality of bonding pads and a plurality of pin pads are connected to each other through conductive patterns. A probe having a contact pin is moved on the electronic circuit board along a straight line substantially constituted by a terminal group without separating the contact pin from the surface of the electronic circuit board. This moving operation is a "wiping" operation. In the process of movement, an identifiable electrical signal is applied to the contact pin, and a return signal is detected at each pin pad. This return signal is compared with a reference signal obtained in advance by using a reference circuit board. A discontinuity or short in each conductive pattern is determined on the basis of the comparison result.
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Nguyen Vinh P.
OHT Inc.
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