Driving circuit for a DC brushless fan motor

Details Driving circuit for a DC brushless fan motor Driving circuit for a DC brushless fan motor

2005-10-18

2005-10-18

Duda, Rina (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S434000, C318S132000, C318S459000, C388S928100, C388S923000

Reexamination Certificate

active

06956342

ABSTRACT:
The present invention is a driving circuit for a DC brushless fan motor, comprising a control unit, a motor, a Hall element, a signal output unit, a temperature control circuit, a reverse protection circuit and a counter-electromotive force (CEMF) removal circuit, as tied in with a plurality of resistors, capacitors, diodes and transistors. Accordingly, the ambient temperature is sensed by the temperature control circuit and is fed back to control the rotation rate of the motor.

REFERENCES:
patent: 5764020 (1998-06-01), Maiocchi
patent: 5969491 (1999-10-01), Viti et al.
patent: 6081091 (2000-06-01), Mitchell et al.
patent: 6236175 (2001-05-01), Mourad et al.
patent: 6528967 (2003-03-01), Hallidy
patent: 6686714 (2004-02-01), Trifilo

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