Question: 49 (a) Find an expression for the gain iO=vS in Figure P49 in terms of RX. (b) Select a value for RX so that the

4–9

(a) Find an expression for the gain iO=vS in Figure P4–9 in terms of RX.

(b) Select a value for RX so that the gain is −0:002.

(c) Simulate the circuit in Multisim and perform a parameter sweep on RX from 10 Ω to 10MΩ and using the cursor to find the required value of RX. How does your answer compare with part (b)?

VS +1 1 Rx ww w Vx + FIGURE P4-9 103 Vx

VS +1 1 Rx ww w Vx + FIGURE P4-9 103 Vx ww 10

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