发明名称 |
Highly sensitive magnetic field detecting device |
摘要 |
<p>A highly sensitive magnetic field detecting device using a DC SQUID for detecting a magnetic field to measure the element characteristics of the DC SQUID. In the highly sensitive magnetic field detecting device, a feedback modulation circuit is equipped with an external input terminal for inputting a signal from the outside at the time of measuring flux-to-voltage characteristics of the DC SQUID. A bias circuit is equipped with an external input terminal for inputting a bias current at the time of measuring current-to-voltage characteristics. An amplifier for amplifying the output of the DC SQUID is equipped at its output with an amplifier output terminal. <IMAGE></p> |
申请公布号 |
EP0501241(B1) |
申请公布日期 |
1997.06.04 |
申请号 |
EP19920102419 |
申请日期 |
1992.02.13 |
申请人 |
SEIKO INSTRUMENTS INC. |
发明人 |
ODAWARA, AKIKAZU;NAKAYAMA, SATOSHI;SEKIYA, SATOSHI |
分类号 |
G01R33/035;H01L39/22;(IPC1-7):G01R33/035 |
主分类号 |
G01R33/035 |
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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