| 发明名称 |
Electric current detector and motor driving device using the same |
| 摘要 |
<p>The detector has a compensation unit which detects a V off from output value of a differential amplifying unit generated while current to be detected is flowing, where the compensation unit is supplied from a positive DC supply source (1). The V off is a difference between an actual output value of the amplifying unit when current to be detected is zero and an ideal output value at zero error with constituent units.</p> |
| 申请公布号 |
EP1406095(A1) |
申请公布日期 |
2004.04.07 |
| 申请号 |
EP20030016549 |
申请日期 |
2003.07.24 |
| 申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MAEDA, SHIRO;HARADA, KAZUHIRO;NOMA, HIROFUMI;ARAKAWA, MASASHI |
| 分类号 |
G01R19/00;H02P23/14;G01R19/15;G05F1/575;H02P7/00;H02P29/00;(IPC1-7):G01R19/00 |
主分类号 |
G01R19/00 |
| 代理机构 |
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代理人 |
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