Title:
SINGLE-PHASE MOTOR DRIVING DEVICE
Document Type and Number:
Japanese Patent JP3802547
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce vibration, noise, and power consumption of a single-phase motor.
SOLUTION: The single-phase motor driving device, having a first driving transistor supplying a drive current in one direction to a single-phase coil and a second driving transistor supplying a drive current in a reverse direction to the single-phase coil, is characterized by providing a comparing means for comparing a level with a reference value of a sinusoidal wave signal from a Hall element detecting a rotational position of the single-phase motor to generate a timing signal in a prescribed period over just before/after a point with a direction switched to change of the drive current of the single-phase coil, and by providing a regenerating means for regenerating the drive current by controlling on/off timing of the first/second driving transistor in a prescribed period generating the timing signal within a period turning on the first/second driving transistor in a side of allowing the drive current to flow out from the single-phase coil in a manner wherein the first/second driving transistor in a side of allowing the drive current to flow in to the single-phase coil is respectively turned on in a period shorter than the concerned period.
Inventors:
Tetsuya Yoshitomi
Yasuyuki Uejima
Yasuyuki Uejima
Application Number:
JP2005129649A
Publication Date:
July 26, 2006
Filing Date:
April 27, 2005
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H02P6/12; (IPC1-7): H02P6/12
Domestic Patent References:
| JP38022408B1 | ||||
| JP2000134986A | ||||
| JP2001016893A | ||||
| JP2000050673A | ||||
| JP58172995A |
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation