Ve (S) (a) Obtain the transfer function for the circuit shown in Fig. (1). Assume Vin(S) the op-amp to be ideal. Y; represents the admittance of branch i. Ys Fig.c1) Y Y

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(a) Obtain the transfer function for the circuit shown in Fig. (1). Assume
Vin (S)
the op-amp to be ideal. Y, represents the admittance of branch i.
Y4
Fig.(1)
Y
Vin
(b) The following circuit of Fig. (2), shows a controlled gain amplifier. What is
the gain of the amplifier circuit when (i) Switch S is off (ii) when switch S is
ON?
lo K
20 k
Vin
SkL
5KSL
Vout
Fig. (2)
Transcribed Image Text:(a) Obtain the transfer function for the circuit shown in Fig. (1). Assume Vin (S) the op-amp to be ideal. Y, represents the admittance of branch i. Y4 Fig.(1) Y Vin (b) The following circuit of Fig. (2), shows a controlled gain amplifier. What is the gain of the amplifier circuit when (i) Switch S is off (ii) when switch S is ON? lo K 20 k Vin SkL 5KSL Vout Fig. (2)
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