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US 2003/0201739 A1Published application
Conversion circuit for a DC brushless motor
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorsAlex Horng, Ying-Ya Lu
Life of this patent
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Abstract
The conversion circuit for a DC brushless motor in accordance with the present invention mainly comprises a rectifier circuit, a power smoothing circuit, and a low-voltage stabilizing circuit. The conversion circuit is used for converting alternating current into direct current for a driver circuit of the motor.
Claims9
A conversion circuit for a DC brushless motor comprising:
- a rectifier circuit rectifying a voltage from a power supply to a pulse DC voltage for operating a driver element of the motor;
- a power smoothing circuit smoothing the pulse DC voltage from the rectifier circuit to attenuate tremendous changes of the voltage so as to reduce zero voltage ratio in a full cycle and then a smooth pulse DC voltage is output to a coil of the motor;
- a low-voltage stabilizing circuit stabilizing the pulse DC voltage from the rectifier circuit at a low voltage and then outputting to the driver element of the motor.
Dependencies are inferred from the claim text.