Method and apparatus for measuring the inherent capacitance of a

Details Method and apparatus for measuring the inherent capacitance of a Method and apparatus for measuring the inherent capacitance of a

1993-02-16

1998-05-05

Faile, Andrew

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

455351, 324537, 324519, H04B 1700

Patent

active

057490490

ABSTRACT:
An electronic device includes a substrate (200) for supporting electrical circuits (202), the substrate (200) including first and second opposing surface areas (204 and 206). At least first and second electrical contacts (214 and 216) are disposed on the substrate 200 and are electrically coupled to at least first and second conductive plates (210 and 212), respectively. The first and second conductive plates (210 and 212) are disposed on the first and second opposing surface areas (204 and 206) of the substrate (200), respectively. Preferably, the first and second conductive plates (210 and 212) at least partially overlap with each other. The first and second conductive plates (210 and 212) form a capacitive element therebetween for determining excessive variability in composition of the substrate as indicated by a measured inherent capacitance of the substrate at the capacitive element that is outside a specified tolerance of the capacitive element (200).

REFERENCES:
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EDN-:News Breaks, "Capacitance test finds circuit-board opens", Edited by Susan Rose, Feb. 18, 1993, p. 17.

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