Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1991-10-31
1993-06-08
Thompson, Gregory D.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361383, 361394, 361399, H05K 720
Patent
active
052185168
ABSTRACT:
Electronic module of printed circuit board with electronic components on one side and its other side in heat conducting contact with a heat sink enables the electronic components to be sealed from ambient atmosphere and thus unpackaged chips may be used. The modules are mountable in a support frame with air cooling passages of the heat sinks extending vertically for convected cooling air. In each module, a resistor network may extend into a cavity formed in a heat exchange rib and an electronic chip, perhaps unpackaged in the sealed environment, may be in heat conductive relationship with the heat sink.
REFERENCES:
patent: 3348148 (1967-10-01), Parsons et al.
patent: 4656559 (1987-04-01), Fathi
patent: 4858071 (1989-08-01), Manabe et al.
patent: 4916575 (1990-04-01), Van Asten
patent: 5060112 (1991-10-01), Cocconi
Collins Hugh M.
Drayton John B.
Hayes Hasler R.
Katchmar Roman
Moss John S.
Austin R. J.
Northern Telecom Limited
Thompson Gregory D.
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