Automotive fan controller

Details Automotive fan controller Automotive fan controller

1992-06-01

1995-04-18

Ro, Bentsu

Electricity: motor control systems

Open loop speed control system for dc motor with commutator

Analog armature control

318268, 318471, 338308, 338325, H02P 706, B60H 100, H01C 700

Patent

active

054085756

ABSTRACT:
A vehicle fan motor controller includes a simple planar ceramic base providing a plurality of printed resistors. The resistors include electrically conductive paths printed on the ceramic overcoated with a thick resistive film. The thick film substantially covers the base to promote heat transfer to air moving in the fan duct in which the controller is placed. The thick film resistors are on both sides of the base to reduce overall size and improve heat transfer. A thermal fuse comprising a spring metal member held in a normally closed position by a meltable material opens in response to a predetermined high temperature.

REFERENCES:
patent: 4196411 (1980-04-01), Kaufman
patent: 4318954 (1982-03-01), Jensen
patent: 4460622 (1984-07-01), Yamaoka et al.
patent: 5000662 (1991-03-01), Yamamoto et al.
patent: 5268665 (1993-12-01), Iwao

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