发明名称 |
ELECTRICAL MOTOR SPEED REGULATORS |
摘要 |
<p>An AC feedback circuit is interconnected through a choke coil between the input and output lines of a motor drive circuit so that negative feedback may be effected at a low frequency close to the cutoff frequency of the control system, and positive feedback may be effected at a high frequency. The carrier signal or the high frequency signal for controlling the switching may be generated within the drive circuit. Thus a switching type speed regulator which is simple in construction yet has high efficiency may be provided.</p> |
申请公布号 |
GB1588738(A) |
申请公布日期 |
1981.04.29 |
申请号 |
GB19770041093 |
申请日期 |
1977.10.04 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD |
发明人 |
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分类号 |
H02P7/29;(IPC1-7):02P5/00 |
主分类号 |
H02P7/29 |
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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