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Circuits Lab6 - Laboratory Experiment#6 Op-Amp Design...

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Laboratory Experiment #6 Op-Amp Design Prepared by Joel Kellogg Performed February 27 th , 2010 Laboratory Group Members: Kelly Hostetter
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Abstract: What was found in the lab was finding the gain of the amplifier in the circuit. The gain was found by getting the absolute value of the voltage out divided by the voltage in the circuit. It is found that the voltage out of the TL082 op-amp is equal to ± 4 V. Objective: The purpose of this lab is to design an amplifier that delivers 8 mW of power to a 1 kΩ load resister at a frequency of 1 kHz using an op-amp, making sure that the AC input signal has amplitude of 1V and a maximum current delivered by the signal source of 1 mA. Procedure: Figure 1 is the circuit that is used in the lab. First nodal analysis was used to determine V 1 find the voltage gain of the amplifier. Next using the equation P L = (1/2) V 2 / R L the average AC voltage was determined. Next the value of R1 was found to determine the maximum value of AC voltage source of 1mA. Next the value of R f was determined using the results from the last two steps. Lastly the op amp is used to
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