Pulse-width-modulation motor drive circuit

Details Pulse-width-modulation motor drive circuit Pulse-width-modulation motor drive circuit

2007-01-30

2007-01-30

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S434000, C318S432000, C318S817000

Reexamination Certificate

active

11274417

ABSTRACT:
A PWM motor drive circuit includes a drive IC member, a Hall IC member, a PWM converter circuit and a capacitor. The drive IC member electrically connects with the Hall IC member, the drive IC member further includes a pin electrically connected with the PWM converter circuit. The capacitor connects in parallel between the pin of the drive IC member and the PWM converter circuit, and further connects with a power source to supply a voltage to the pin of the drive IC member. When the motor is started, the capacitor can prevent occurring zero volts at the pin of the drive IC member so that the drive IC member cannot unexpectedly enter a high-speed mode.

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