反相输入式相加电路图.ewb

Multisim2001软件的仿真电路实例261例

Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"反相输入式相加电路" 
"	当电路参数满足深负反馈条件，也就是开环放大倍数大于闭环放大倍数几十倍时，则放大器的反相输入端具有虚地特性。输出电压uo=—Rf（ui1/R1+ui2/R2+ui3/R3）。" 
"	接入同相输入端的补偿电阻：Rp=R1//R2//R3//Rf" 

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