发明名称 |
DC current sensor |
摘要 |
A DC current sensor has a detecting core with a plurality of detecting core members adapted to be divided in a circumferential direction for receiving the lead wire. A pair of annular exciting cores on one of said detecting core members formed of saturable magnetic material has a core intersection inter-connected perpendicularly to the circumferential direction of said detecting core members, and are disposed oppositely in spaced relation with said detecting core members to magnetically saturate a portion thereof by a magnetic flux produced substantially in the perpendicular direction against a magnetic flux in the circumferential direction, produced by the DC current flowing through said lead wire being detected, and to interrupt a magnetic path by the magnetic flux in the circumferential direction periodically. Exciting coils are wound around the exciting cores in negative-phase excitation.
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申请公布号 |
US5523677(A) |
申请公布日期 |
1996.06.04 |
申请号 |
US19940321792 |
申请日期 |
1994.10.12 |
申请人 |
SUMITOMO SPECIAL METALS CO., LTD. |
发明人 |
KAWAKAMI, MAKOTO;YAMAGUCHI, SHIGERU |
分类号 |
G01R15/18;G01R19/00;(IPC1-7):G01R33/00 |
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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