Electric circuit device and ignition apparatus for internal comb

Details Electric circuit device and ignition apparatus for internal comb Electric circuit device and ignition apparatus for internal comb

1996-03-22

1997-12-16

Phillips, Michael W.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361816, 361818, 1231465B, 123643, H05K 504, H05K 506

Patent

active

056992300

ABSTRACT:
An electric circuit device, such as an igniter for internal combustion engine ignition systems, has a metallic package which is floated from the electric ground, and an electric circuit which is formed by conductive patterns and circuit elements mounted on a ceramic substrate. Another conductive pattern is formed as a guard pattern along an outer periphery of the substrate and electrically grounded. The protective film is formed in a comb shape on the guard pattern, exposing the guard pattern only partly. The exposed guard pattern located close to the metallic package absorbs electric noises coming in through the metallic package.

REFERENCES:
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patent: 5113840 (1992-05-01), Taruya et al.
patent: 5125386 (1992-06-01), De Filippis et al.
patent: 5206796 (1993-04-01), Thompson et al.
patent: 5359982 (1994-11-01), Taruya
patent: 5381159 (1995-01-01), Oohori
patent: 5550713 (1996-08-01), Pressler et al.
patent: 5566052 (1996-10-01), Hughes
Nippondenso Technical Disclosure Journal Serial No. 65-220 May 15, 1989.

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