Au2?U02??RC30?2?????0.95Uirbe?(1??)RE1?31?2
?U01?Au1?Ui?0.98VU02?Au2?Ui??0.95V.
9.14~9.17略。
第十章答案
10.1 略。 10.2（a）
321?U0???5020101002U0?2?10204?22?U0?1020U0??26V.
（b）
U0?6V.
(c)
U0??2V.
(d)
U0??2V.
?3?43?1043204?2?V(e) U??10?203(f) U??
?U020U0?10V.
1414?U2??U1?U2?U1 4?14?15541U3?U0?U?1?41?44114?U3?U0?U2?U15555U?? 10.3
?U0?4U1?U2?4U3.Ui1Ui2U???0?Ｕ０＝??（3Ui1?6Ui2）(R1单位有误)R2RF R1
R3?R1//R2//RF?60//30//180?18K?.
10.4
U0??11Udt??Uidt??20?Uidt i3?6?R1CF?50?10?1?10 Ui t1
t/ms
Uo(V) 0.1t1 t
10.5
U??U??0UC?U0?R4R1UC??U0
4Ui?UCUCUdUC??iC??0?C RR4RdtUi2UCUdUC??iC??0?CRR2Rdt
1d?U0RdU042Ui??U0?2RC???U0?Cdt2dt
2U0dU04???UiRCdtRCRCdU0?U0??2Ui??62dt Ui /mV 3
当Ui为常数时，根据三要素法可知：得：U0??（61?e2t?RC
） t
Uo /mV
t -6V 10.6
0.555??R15RF1000K15?R14RF55?R13RF105?R121M505?R111MR15?100K?
R14?200K?R13?1000K?
R12?2M?R11?10M?10.7
U01??RF?UiR1U02??U01
RF?Ui R1U0?U02?U01??2U01?210.8
U01??10?Ui1??10Ui1 1
U01Ui2Ui3?U0???1052105?5?U01??6424U0??[U01?2Ui2?5Ui3]?10Ui1?2Ui2?5Ui3
10.9
U01?30?20?10mV
631?(?12)??U02U02??4V6?36?326612U02??U01??U0?12?612?612?61U02?U01?U0U0?(U02?U01)26?10.10
Ui1?Ui2U01?U02?''RW?RWRF1?RF2?RW?RWU01?U02?RF1?RF2?RW?R?(Ui1?Ui2)'RW?RW'W
当R?20K?时'W(U01?U02)20'RF1?RF2?RW?RW??(Ui1?Ui2)2?20
当R?0时'W'RF1?RF2?RW?RW(U01?U02)0??(Ui1?Ui2)
2?(U01?U02)2021??(U01?U02)02211 Au变化11倍。10.11
U1??Rx1?5V U2???5V?2.5V2R2?RxU01?U02?
U01?U02U1??U2??RRF1?R?RF210010010U02?U01?U0110110110当Rx?2.1K?时，U1??40?10?40?(U1??U2?)?9(U1??U2?)
10U0?10(U02?U01)??90(U1??U2?)?90(U2??U1?)U0?90?(2.5?2.56)??5.4VU0?90?(2.5?2.62)??10.8V
2.1?5?2.56V2?2.12.2当Rx?2.2K?时，U1???5?2.62V2?2.2U0变化：10.8?5.4?5.4V.(下降5.4V).10.12
U0??1U01dt RC?R2//RFR1//RFR1//R2R'?U?U??U??U?i3i1i201R2//RF?R1R1//RF?R2R1//R2?RFR3?R'而由R1//R2//RF?R3//R'可知：
R3?R'R1//R2?RFR1//RF?R2R2//RF?R1???R1//R2?RFR1//RF?R2R2//RF?R1R3?R'??1R1//R2?RF??Ui3R3R1//R2?RFR1//R21R1//R2?RF1R1//R2?RF??Ui1???Ui2??U01R1R1//R2?RFR2R1//R2?RFR1//R2?RF
?U01?RFRR?Ui3?F?Ui1?F?Ui2R3R1R2RFRFRF1?U0?(?U??U??Ui3)dti1i2?RCR1R2RB10.13
?R(1)反相输入放大器。F?5VR1RF?100K?R1?20K?
(2)反相双端输入放大器。
RF?1R1RF?0.3R2由RF?50知：R1?50R2?167K?
(3)同相输入放大器。R1?F?6R1RF??1R1
由RF?50K知：R1?10K?
（4）Ui1由反相端输入，Ui2由同相端输入。RF?2R2由RF?30K?知：R1?30K?R2?15K?
(5)反相双端输入积分电路。U0??11Udt?Ui2dti1??R1CR2C?1?20R1C1?10R2C106由C?1uF知：R1??50K?20106R2??100K?10
(6)微分电路。dUiU0??RFCdtRFC?11?10uF105
由RF?100K?知：C?
Uz?U0?10.14 R1RFU0??RFUz R1