Capacitance and leakage test method and apparatus

Details Capacitance and leakage test method and apparatus Capacitance and leakage test method and apparatus

1991-06-03

1993-04-13

Harvey, Jack B.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324158F, 324678, G01R 2726

Patent

active

052026400

ABSTRACT:
Capacitance is measured using a system including a high voltage ramp monitor. A signal net is connected to ground by probes while a constant charging current is applied to the internal planes. A pure capacitive net will have a linear voltage rise proportional to capacitance, therefore its capacitance can be represented by ramp time. Leakage shorts will be detected by residual charge current measurements. The stimulus voltage is maintained for a fixed time after ramping to provide net to internal plane stress testing. Measured net capacitance is compared to nominal net capacitance for short/open detection.

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