Noninverting Amplifier (a) 2. The circuit for this step is the noninverting amplifier shown in Figure 12-11. Using the measured resistances from step 1, compute the closed-loop gain of the noninverting

amplifier. The closed-loop gain equation is given in the text as Equation 12-8. Enter the computed value in Table 12-10. (e) (f) V₁= 500 mV 1.0 kHz Application Activity PROVE PERME (b) (c) Calculate your using the computed closed-loop gain. Record in Table 12-10. Change the circuit to the noninverting amplifier circuit shown in Figure 12- 11. Set the input for a 500 mVpp sine wave at 1.0 kHz with no dc offset. Record the measured setting in Table 12-10. (d) Measure the output voltage, Vor Record the measured value in Table 12-10. Measure the feedback voltage at pin 2. Record the measured value. Notice that the voltage at pin 2 is not near ground potential this time. Place a 1.0 M2 test resistor in series with the input from the generator. Observe the output voltage with the series resistor in place. You can think of the voltage change as being dropped across the test resistor, the rest is across the input resistance. You can use this to indirectly find the input resistance. Record the measured input resistance in Table 12-10. Table 12-10 +15 V HE 110μF 741C 44 10μ -15 V Figure 12-11 www 116 R₁ 10 k R₁ 1.0 kn Parameter Vin ACKNI) Vout Ve Rin Computed Measured Value Value 500 mVpp