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Exercise 4.8.6(a) Determine vo and the power dissipated in Ri in the circuit below.5 ko2 V7 kOw3 k2- +a2 kΩ4 kΩ 2 kRL3 k24 V

Question
Assume that even though the supply voltages are not shown, the op-amp remains in the linear region of operation.
Exercise 4.8.6
(a) Determine vo and the power dissipated in Ri in the circuit below.
5 ko
2 V
7 kO
w
3 k2
- +
a
2 kΩ
4 kΩ 2 k
RL
3 k2
4 V
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Exercise 4.8.6 (a) Determine vo and the power dissipated in Ri in the circuit below. 5 ko 2 V 7 kO w 3 k2 - + a 2 kΩ 4 kΩ 2 k RL 3 k2 4 V

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Step 1

Apply voltage division rule and find voltage of 3kΩ resistor connected at +ve terminal of op-amp. Consider this voltage as V+

4x3
V
5
-2.4 V
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4x3 V 5 -2.4 V

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Step 2

Now for ideal op-amp V+ is equal to V- , now apply KCL at (-ve) terminal of op-amp and conside...

2-2.4 2.4-V_
op
7
5
= 2.114V
op
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2-2.4 2.4-V_ op 7 5 = 2.114V op

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