发明名称 |
Current drive circuit for an induction coil |
摘要 |
A current drive circuit for an induction coil is provided comprising a clamp circuit connected to the two terminals of the coil. This clamp circuit prevents the voltages of the two terminals from dropping below a reference voltage, thereby preventing decreases of the amplifier constants hFE of the transistors which are also coupled to the two terminals for a read-out operation.
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申请公布号 |
US4249219(A) |
申请公布日期 |
1981.02.03 |
申请号 |
US19790042590 |
申请日期 |
1979.05.24 |
申请人 |
HITACHI, LTD. |
发明人 |
AOI, HAJIME;TAMURA, TAKASHI;KOIZUMI, MAKOTO;KUNIMI, NOBORU;ENOMOTO, MINORU;HATANAKA, NORIAKI |
分类号 |
G11B5/09;G11B5/02;H03K17/64;(IPC1-7):G11B5/09 |
主分类号 |
G11B5/09 |
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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