Variable compensation circuit for capacitive adapters

Details Variable compensation circuit for capacitive adapters Variable compensation circuit for capacitive adapters

2006-02-21

2006-02-21

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Internal-combustion engine ignition system or device

Apparatus for coupling a measuring instrument to an ignition...

C324S380000

Reexamination Certificate

active

07002351

ABSTRACT:
A variable compensation circuit for capacitive adapters is provided and includes an input connector for receiving a signal output from a capacitive adapter positioned within an electric near field emitted from a component of an engine ignition system, an output connector for outputting a signal output from the variable compensation circuit, a capacitive divider circuit portion disposed in series between the input and output connectors, the capacitive divider circuit portion comprising at least one of a variable capacitor and a plurality of fixed capacitors. The variable compensation circuit also includes a switching element configured to enable at least one of a selection and de-selection of the plurality of fixed capacitors and adjustment of a variable capacitor to provide one of a plurality of selected capacitance reactance ratios.

REFERENCES:
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patent: 6396278 (2002-05-01), Makhija
patent: 2003/0098698 (2003-05-01), Bengtsson

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