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opamp
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Summing Amplifier
V1
V2
V3
i3
i2
i1
i
Rf
0
0
Vo
i
a
Inverting Amplifier
R1i1
Rf
0V
i2
+Vi
V1
Ingat!1. Tiada arus yang
memasuki op-amp, V = 0
Vo+ V2
1