Identification of pin-open faults by capacitive coupling through

Details Identification of pin-open faults by capacitive coupling through Identification of pin-open faults by capacitive coupling through

1992-06-03

1993-10-19

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324537, 324158R, G01R 3102

Patent

active

052549534

ABSTRACT:
Disclosed is a system that determines whether input and output pins of semiconductor components are present and properly soldered to a printed circuit board. The system uses an oscillator which supplies a signal, typically ten kiloHertz (10 kHz) at 0.2 volts, to the pin under test. A conductive electrode is placed on top of the component package. The electrode is connected to a current measuring device. Another pin of the component is connected to the common signal return. Typically the other pin is chosen to be a power or ground pin of the component.

REFERENCES:
patent: 4056773 (1977-11-01), Sullivan
patent: 4186338 (1980-01-01), Fichtenbaum
patent: 4779041 (1988-10-01), Williamson, Jr.
patent: 4789829 (1988-12-01), Stribling
patent: 5006808 (1991-04-01), Watts
patent: 5124660 (1992-06-01), Cilingiroglu
patent: 5138266 (1992-09-01), Stearns

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