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共模抑制 [gòng mó yì zhì]
common-mode rejection
- 该设计电路结构简单,无需刻意匹配就可以达到很高的共模抑制比。
The design has advantages of simple, low cost and high common mode restrainratio. - 由于输出信号微弱，采用短线路传输，高输入阻抗，共模抑制比和串模抑制比高，温漂和零漂小的集成运放电路。
Owing to weak output signals integrated amplifier is designed , which is characteristics of shorter wires , higher input impedance , higher common mode rejection ratio and series mode rejection ratio , smaller zero shift and temperature shift . - 通过对前置放大器等电路结构的精心设计,选用超低噪声的集成运算放大器以及线性光耦合器等新器件,克服了脑电信号采集中经常遇到的一些困难,使前置放大器具有较高的共模抑制比,从而能够较好地放大检测出所需的脑电信号。
By designing the circuit structure of preamplifier and selecting new elements such as ultra low noise operational amplifier and linear opto-coupler,some difficulties in EEG acquisition is overcome and the Common Mode Rejection Ratio(CMRR) of preamplifier is highly increased.So EEG can be amplified and detected well.
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