ENGR201 Lab 2019 Fall
Lab 7
Name: Nic Theobald
Email: nstheobald@fortlew.edu
PCB Design
Introduction:
This lab covers the use and analysis of signals before and after being processed by an OP AMP. OP AMPS (Operational Amplifiers) can be used to amplify voltages.

Methods: Materials:
The circuit show in figure 1 is build on a bread board and is tested (figure 1,2). The circuit shown in figure 3 is built. The op amp is powered up by +9V and -9V with Vin = sinewave (1k Hz, 2V Vpp). As Vout and Vin is probed, the potentiometer is adjusted to find the max amplification while still maintaining data resolution (figure 4). The second configuration shown in figure 5 is built and tested using the same Vin as the previous configuration (figure 5,6). The circuit shown in figure 7 was built and tested with a 100ohm resistor (figure 7,8). The same circuit from task 4.1 is used, but the 100ohm resistor is replaced with a 1mega ohm resistor (figure 9,10). The circuit shown in figure 11 (comparitor) is built and tested (figure 11, 12)
LM741 OP AMP
5k resistor
100k Potentiometer
 x1
x1
x1
Results:
Task 1:
Figure 1: Circuit
 Figure 2: Results
Task 2:
Max supply voltage
Task 3: Inverting Amplifier
Figure 3: Circuit
 Figure 4: Results

Task 3.2: nonInverting Amplifier
Figure 5: Circuit
 Figure 6: Results

Task 4: nonInverting Amplifier (100ohm)
Figure 7: Circuit
 Figure 8: Results


Task 4.2: nonInverting Amplifier (1Mohm)
Figure 9: Circuit
 Figure 10: Results



Task 5: Comparitor
Figure 11: Circuit
 Figure 12: Results



Dicussion: This lab followed the construction of several OP AMP configurations incuding multiple inverting and noninverting amplifiers and one comparitor configuration.