Bi-directional motor control incorporating a defroster element

Details Bi-directional motor control incorporating a defroster element Bi-directional motor control incorporating a defroster element

1998-04-09

1999-07-06

Ro, Bentsu

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318280, 318444, H02P 122

Patent

active

059201657

ABSTRACT:
A unique electrical control for a defroster has a resistive electrical filament strip and a bi-directional motor having a H-bridge drive. The defroster filament may be simultaneously operated to warm a window or mirror and function as a power or current dissipating resistance to prevent a short circuit within the H-bridge drive.

REFERENCES:
patent: 3919734 (1975-11-01), Mosley
patent: 4037286 (1977-07-01), Medearis et al.
patent: 4109133 (1978-08-01), Hanle et al.
patent: 4387290 (1983-06-01), Yasuda
patent: 5010289 (1991-04-01), Takada
patent: 5386098 (1995-01-01), Knudsen
patent: 5694812 (1997-12-01), Maue et al.
patent: 5764010 (1998-06-01), Maue et al.

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