(6) 同相求和运算:Rf RF ui Rf _
RF +
RP
uo
+
u u
R1i1
u+ +
+
uo
R2i2
取R1//R2=RF//Rf 1+ RF Rf R1 R2 ui2) ui1 + )( R1 + R2 R1
+ R2
uo = Au u+ =(
当R1 = R2 时, uo
-
Au= 1+
RF Rf
=
1 2
(1+
RFRf
)(ui1 + ui2)14
(6) 同相求和运算:Rf RF ui Rf _
RF +
RP
uo
+
u u
R1i1
u+ +
+
uo
R2i2
取R1//R2=RF//Rf 1+ RF Rf R1 R2 ui2) ui1 + )( R1 + R2 R1
+ R2
uo = Au u+ =(
当R1 = R2 时, uo
-
Au= 1+
RF Rf
=
1 2
(1+
RFRf
)(ui1 + ui2)14