发明授权
US06897658B2 Circuit for selectively enabling and disabling coils of a multi-coil array
失效
用于选择性地启用和禁用多线圈阵列的线圈的电路
- 专利标题: Circuit for selectively enabling and disabling coils of a multi-coil array
- 专利标题(中): 用于选择性地启用和禁用多线圈阵列的线圈的电路
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申请号: US10610471申请日: 2003-06-30
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公开(公告)号: US06897658B2公开(公告)日: 2005-05-24
- 发明人: Kenneth W. Belt , Michael Reichel , J. Michael Watral
- 申请人: Kenneth W. Belt , Michael Reichel , J. Michael Watral
- 申请人地址: US PA Indianola
- 专利权人: Medrad, Inc.
- 当前专利权人: Medrad, Inc.
- 当前专利权人地址: US PA Indianola
- 代理商 James R. Stevenson
- 主分类号: G01R33/3415
- IPC分类号: G01R33/3415 ; G01V3/00
摘要:
A circuit for selectively disabling and enabling n-coils includes n-drivers in a totem-pole configuration. Each of the n-drivers includes two transistors whose control terminals connect at a common node. Each n-driver is used to operate one of the n-coils by being responsive at its common node to (i) a coil disable signal by activating one transistor thereof and deactivating the other transistor thereof thereby drawing current away from and thus disabling its corresponding coil and allowing current to flow through the one transistor and thus be available as a source of current to a successive one of the n-drivers and (ii) a coil enable signal by deactivating the one transistor thereof and activating the other transistor thereof thereby allowing current to flow serially through its corresponding coil and the other transistor thus enabling its corresponding coil and to be available as a source of current to the successive n-driver.
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