发明名称 |
Demagnetizing power source |
摘要 |
A demagnetizing power source for producing an attenuation alternating field to demagnetize a magnetized substance. This power source is provided with a memory circuit for sending actuating signals to a polarity changing-over circuit to change over the polarity of direct current supplied from a rectifying circuit to an exciting coil. In the memory circuit are stored a plurality of preset demagnetizing patterns. The polarity changing-over circuit changes over alternatively the polarity and gradually decreases the change-over cycle according to the selected demagnetizing pattern.
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申请公布号 |
US4462059(A) |
申请公布日期 |
1984.07.24 |
申请号 |
US19810309375 |
申请日期 |
1981.10.07 |
申请人 |
KANETSU KOGYO KABUSHIKI KAISHA |
发明人 |
YAMAGAMI, KIKUO;YOKOYAMA, KOJI |
分类号 |
H01F13/00;(IPC1-7):H01F13/00 |
主分类号 |
H01F13/00 |
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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