Vibration and shock-resistant film-type power resistor

Details Vibration and shock-resistant film-type power resistor Vibration and shock-resistant film-type power resistor

1992-05-05

1994-04-05

Lateef, Marvin M.

Electrical resistors

Incased, embedded, or housed

Element in insulation with outer metallic sheath

338 98, 338230, 338252, 338 7, 338243, 338308, H01C 1028

Patent

active

053009193

ABSTRACT:
The power resistor has a metal housing and heatsink, the bottom wall of which is planar and has a bolt hole therethrough for tight securing of the resistor to a chassis. A planar film-type power resistor is mounted in the housing and encapsulated therein, being held close to the bottom wall of the housing. Heat from the film-type resistor passes through the bottom wall into the chassis, the result being that the power rating of the resistor is high. The metal housing is die-cast of a zinc alloy, at extremely low cost yet with substantially the same heat-transmission characteristic as that of conventional die-castable aluminum alloys.

REFERENCES:
patent: 3201855 (1965-08-01), Hay
patent: 3206704 (1965-09-01), Hay
patent: 3581266 (1971-05-01), Weyenberg
patent: 4318072 (1982-03-01), Zandman
patent: 4677413 (1987-06-01), Zandman
patent: 4771240 (1988-09-01), Meyer et al.
patent: 4788524 (1988-11-01), Ozaki
Dale Electronics, Inc., one-sheet catalog sheet "MIL-R-39009, Type Rer, R Level Dale Type ERH and ENH Aluminum Housed".

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