发明名称 |
Signal conditioning circuit for low amplitude, high common mode voltage input signals |
摘要 |
A cost-effective conditioning circuit for extracting a weak, floating, wide-band signal with a low common-mode voltage from noisy environments is proposed that includes a high gain single ended operational amplifier to increase the amplitude of the signal. A simple, cost-effective approximately unity gain differential amplifier stage is used to level-shift the signal down to the desired reference potential. A typical application is a motor drive system, where the signals to be measured are bi-directional motor currents.
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申请公布号 |
US5861775(A) |
申请公布日期 |
1999.01.19 |
申请号 |
US19970784696 |
申请日期 |
1997.01.16 |
申请人 |
FORD GLOBAL TECHNOLOGIES, INC. |
发明人 |
CHEN, CHINGCHI;SANKARAN, VENKATESWARA ANAND |
分类号 |
H03F3/45;(IPC1-7):H03F3/45;G05F1/00 |
主分类号 |
H03F3/45 |
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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