| 发明名称 |
Electric stepper motors |
| 摘要 |
A stepper motor has impedance in series with each drive coil and the value of the impedance is changed during each drive pulse. Two different paths for current to a drive coil may be provided each having a different value of impedance and the current to the drive coil is switched between the two paths during each drive period.
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| 申请公布号 |
US4044291(A) |
申请公布日期 |
1977.08.23 |
| 申请号 |
US19750616013 |
申请日期 |
1975.09.23 |
| 申请人 |
NATIONAL RESEARCH DEVELOPMENT CORPORATION |
发明人 |
HUGHES, AUSTIN;LAWRENSON, PETER JOHN |
| 分类号 |
H02K37/00;H02K37/04;H02K37/14;H02P8/32;(IPC1-7):H02K37/00 |
主分类号 |
H02K37/00 |
| 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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