发明名称 |
Brushless motor drive circuit |
摘要 |
A brushless motor drive circuit includes a plurality of Hall elements for detecting magnetic flux changes of a rotating rotor magnet. A drive signal generating circuit generates drive signals applied to the stator windings of the motor. Each of the drive signals has a pair of slanted edge portions and a relatively flat portion interposed between the slanted edge portions which are directly formed from said detected flux changes. The circuit is effective in preventing acoustic noises during phase switching.
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申请公布号 |
US4760315(A) |
申请公布日期 |
1988.07.26 |
申请号 |
US19860906502 |
申请日期 |
1986.09.12 |
申请人 |
SONY CORPORATION |
发明人 |
NANAE, YUUICHI;NIIKURA, HIDEO |
分类号 |
H02P6/08;H02P6/04;H02P6/06;H02P6/12;H02P6/14;(IPC1-7):H02P6/02 |
主分类号 |
H02P6/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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