| 发明名称 |
SPEED CONTROL DEVICE FOR DC MOTORS |
| 摘要 |
<p>PURPOSE:To control a number of revolution stably down to a low speed without lowering a comparing frequency extremely, by proportioning a speed comparing frequency to a speed ratio to be changed over to.</p> |
| 申请公布号 |
JPS5284416(A) |
申请公布日期 |
1977.07.14 |
| 申请号 |
JP19750159325 |
申请日期 |
1975.12.29 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
SUMINO MASARU |
| 分类号 |
G05D13/62;G11B5/52;G11B15/467;H02P7/06 |
主分类号 |
G05D13/62 |
| 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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