Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1978-09-13
1979-08-21
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
204 1T, 324 52, 324 73PC, G01N 2700, G01R 3108
Patent
active
041652703
ABSTRACT:
The test device is an electrolytic apparatus for the simultaneous non-destructive testing of the integrity of pluralities of circuit boards for continuity and anti-continuity or short circuits, including such circuit boards as employ multi-layer or multi-level interconnection wiring, whether it be printed wiring or screen printed or thermally deposited circuits. Transient electro-deposition of one ion from an alkali halide water solution temporarily modifies the optical reflectivity of exposed circuit terminals or metal parts of the circuit boards under test in a characteristic and easily recognized manner according to the continuity status of the associated circuit paths.
REFERENCES:
patent: 3493481 (1970-02-01), Messner et al.
patent: 3494837 (1970-02-01), Messner et al.
patent: 3824462 (1974-07-01), Vinsani
patent: 3830956 (1974-08-01), Wootton et al.
Ost Robert J.
Perry Robert F.
Kaplan G. L.
Sperry Rand Corporation
Terry Howard P.
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