Method and means for operating brushless DC motor with reversibl

Details Method and means for operating brushless DC motor with reversibl Method and means for operating brushless DC motor with reversibl

1987-02-27

1988-08-02

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

318293, 318739, H02P 710, H02K 1100

Patent

active

047615788

ABSTRACT:
A circuit for operating a brushless DC motor, the circuit receiving as inputs the positive
egative, or negative/positive DC power normally applied to reverse a brush-type DC motor, with the polarity of the input power determining direction of rotation of the motor. The input power is full-wave rectified to provide positive
egative DC power to the brushless DC motor drive. A polarity sense circuit determines the polarity of the input DC power and provides to the brushless DC motor drive a logic signal indicating commanded direction.

REFERENCES:
patent: 1805160 (1931-05-01), Bivens
patent: 3484672 (1969-12-01), Bailey
patent: 4406979 (1983-09-01), Sloan
patent: 4494181 (1985-01-01), Ramlohr et al.

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