Method for detecting open circuits with a measurement device

Details Method for detecting open circuits with a measurement device Method for detecting open circuits with a measurement device

1997-10-31

1999-11-02

Ballato, Josie

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

324539, 324607, 324603, 324763, 324 731, G01R 3114

Patent

active

059777745

ABSTRACT:
A method for determining whether a circuit under test is open is presented. A digital-to-analog converter is dithered to generate a known signal. This known signal is summed with an external attenuation signal which is brought into the system from a probe on the circuit under test. This summation is then measured by an analog-to-digital converter (ADC). If the known signal is not attenuated by the probe (i.e., the ADC measures essentially the known signal), we can conclude that the circuit is open.

REFERENCES:
patent: 3714571 (1973-01-01), Walker
patent: 4837502 (1989-06-01), Ugenti
patent: 4841286 (1989-06-01), Kummer
patent: 4862070 (1989-08-01), Ostertag
patent: 4947130 (1990-08-01), Kitayoshi
patent: 5291140 (1994-03-01), Wagner

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