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US5703516A Offset cancel circuit and offset cancel system using the same 失效
偏移取消电路和偏移取消系统使用相同

Offset cancel circuit and offset cancel system using the same
摘要：
An offset cancel circuit includes two terminals, an output terminal and two intermediate nodes. When the offset cancel circuit is in a first state, the offset cancel circuit supplies a potential difference responsive to a difference in potential between the two terminals between the two intermediate nodes and supplies a potential responsive to both the potential difference supplied between the two intermediate nodes and a first potential to the output terminal. On the other hand, when the offset cancel circuit is in a second state, the offset cancel circuit supplies a potential difference responsive to the difference in potential between the two terminals between the two intermediate nodes and supplies a potential responsive to both the potential difference supplied between the two intermediate nodes and a second potential to the output terminal.
摘要（中）：

偏移消除电路包括两个端子，一个输出端子和两个中间节点。 当偏移消除电路处于第一状态时，偏移消除电路响应于两个中间节点之间的两个端子之间的电位差而提供电势差，并且响应于在两个中间节点之间提供的电位差两者提供电位 并向输出端发送第一个电位。 另一方面，当偏移消除电路处于第二状态时，偏移消除电路响应于两个中间节点之间的两个端子之间的电位差而提供电位差，并且响应于所提供的电位差两者提供电位 在两个中间节点之间，并且到输出端子的第二电位。

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