Question

Example 5.1 A 741 op amp has an open-loop voltage gain of $2 imes 10^5$, input resistance of 2 M$Omega$, and output resistance of 50 $Omega$. The op amp is used in the circuit of Fig. 5.6(a). Find the closed-loop gain $v_o/v_s$. Determine current $i$ when $v_s = 2$ V.

          Example 5.1
A 741 op amp has an open-loop voltage gain of $2 	imes 10^5$, input resistance of 2 M$Omega$, and output resistance of 50 $Omega$. The op amp is used in
the circuit of Fig. 5.6(a). Find the closed-loop gain $v_o/v_s$. Determine
current $i$ when $v_s = 2$ V.

Example 5.1
A 741 op amp has an open-loop voltage gain of 2 imes 10^5, input resistance of 2 MOmega, and output resistance of 50 Omega. The op amp is used in
the circuit of Fig. 5.6(a). Find the closed-loop gain vo/vs. Determine
current i when vs = 2 V.

Added by Antonio M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

07/13/2023

Step 1

- Open-loop voltage gain ($A_{OL}$) = $2 \times 10^5$ - Input resistance ($R_i$) = $2 \, \text{M}\Omega$ - Output resistance ($R_o$) = $50 \, \Omega$ - Resistors in the circuit: $R_1 = 10 \, \text{k}\Omega$, $R_2 = 20 \, \text{k}\Omega$ Show more…

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A 741 op amp has an open-loop voltage gain of 2 x 10^5, input resistance of 2 MΩ, and output resistance of 50 Ω. The op amp is used in the circuit of Fig. 5.6(a). Find the closed-loop gain vo/vs. Determine current i when vs = 2 V. Figure 5.6 For Example 5.1: (a) original circuit, (b) the equivalent circuit.