Lab 6 - Guide

# Lab 6 - Guide - EE43/100-Lab#6 EE43/EE100 LAB#4 Op Amps...

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EE43/EE100 — LAB #4 Op Amps Guide Motivation / Objectives In this lab, we will be learning about operational amplifiers (op amps), and simple circuits involving op amps. We will compare the op amp theoretical analysis developed in the lectures with actual measured values, and real-world (non-ideal) op amps. In addition, the circuits used in this lab will also reinforce previous concepts, such as voltage dividers and superposition. Important Notes Please set the current limit on the DC power supply to 300mA or less, on both the 6V and ±25V outputs, to prevent damage to the op amps. These circuits are complicated. Good breadboard practices will be key in completing this lab. Part 1: Op Amp Setup 1. Set the current limit on the 6V, 25V, and -25V outputs of the DC power supply to 300mA. Set the power supply to have outputs of +5V, +10V, and -10V. Be sure to use the same ground node for the ground of the 6V and ±25V outputs. 2. We will be using the LM741 op amp. The pinout of the LM741 package is shown in Figure 1. Figure 1: Pinout of LM741 package (Source: National Semiconductor LM741 datasheet) Part 2: The Voltage Follower 3. On your breadboard, build the op amp circuit shown in Figure 2. The numbers correspond to the appropriate pin of the LM741. V DD and V SS will be supplied by the DC power supply. Set V DD = 10V and V SS = -10V. Figure 2: The voltage follower Page 1 of 4

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4. Apply a 5V DC voltage to v in . Measure this value using the DMM. What is the expected value of v out ? Verify by measuring
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Lab 6 - Guide - EE43/100-Lab#6 EE43/EE100 LAB#4 Op Amps...

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