发明名称 |
DC current sensor using a continuous annularly shaped detection core |
摘要 |
A DC current sensor using a continuous annularly-shaped detecting core of soft magnetic material; a continuous annularly-shaped exciting core of soft magnetic material intersecting with the detecting core perpendicular to the plane thereof; respective detecting and exciting coils wound respectively around the detecting and the exciting cores; an AC excitation of a given frequency applied to the exciting coil to saturate the detecting core; a wire conducting DC current to be detected extending through the detecting core to establish a magnetic flux therein; and a detector connected to the detecting coil for detecting the magnetic flux modulated by the AC excitation to detect the DC current flowing in the wire.
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申请公布号 |
US5475301(A) |
申请公布日期 |
1995.12.12 |
申请号 |
US19950403116 |
申请日期 |
1995.03.13 |
申请人 |
SUMITOMO SPECIAL METALS CO., LTD. |
发明人 |
KAWAKAMI, MAKOTO;YAMAGUCHI, SHIGERU |
分类号 |
G01R15/18;G01R19/20;(IPC1-7):G01R1/04 |
主分类号 |
G01R15/18 |
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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