Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1998-02-27
2000-08-01
Ballato, Josie
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324537, 324538, G01R 3102
Patent
active
060972025
ABSTRACT:
The present invention provides an inexpensive and reliable circuit-board inspection apparatus and method applicable to a densely wired circuit board. A sensor module 50 is disposed on a pad section 38 on an inspected circuit board. The sensor module 50 is formed by integrating four sensor units 52, 54, 56, and 58 together. Each sensor unit is capacitively coupled to a plurality of corresponding pads so that a signal can be independently obtained from each sensor unit. By selecting a pad 36b of a pad section 36 and a sensor unit 54 and providing a predetermined signal between them to inspect the continuity, it can be determined whether a printed pattern 34x is open-circuited between a pad 38 b and a pad 38x. This invention enables the continuity of dense complicated and irregular printed patterns to be inspected accurately and inexpensively.
REFERENCES:
patent: 4551673 (1985-11-01), Barth et al.
patent: 4565966 (1986-01-01), Burr et al.
patent: 5006808 (1991-04-01), Watts
patent: 5023545 (1991-06-01), Marques
patent: 5187430 (1993-02-01), Marek et al.
patent: 5198756 (1993-03-01), Jenkins et al.
patent: 5266901 (1993-11-01), Woo
patent: 5625292 (1997-04-01), Crook et al.
Ballato Josie
Nidec-Read Corporation
Sundaram T. R.
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