Purpose:

To give you the chance in experimenting with basic op-amp circuits like inverting and non-inverting amplifiers, difference and adder circuits. The use of the LF411 will be the primary used op-amp for these exercises, in which are necessary for basic circuitry. 

Procedure:

1) Build an inverting amplifier with a theoretical gain of -20 dB. Measure its frequency with a bode plot and compare with expected values. Find the corner frequency. Now replace the LF411 with its pin equivalent op-amp, the TL061, and repeat previous measurements. 
2) Build a non-inverting amplifier and repeat measurements as done in part 1 of the procedure. 
3) Build an adder circuit and take measurements using two different DC voltages, then verify that it works properly with the following relationship.
4) Build a difference amplifier as shown in fig. 6.7 of your textbook, and verify that is operates as to be expected. 

Data:

1) The materials used for the inverting amplifier circuit as shown in Fig. (1),  included R1=10 kOhms, Rf=200 kOhms, and a gain B.W. = 3 MHz. The expected corner frequency was calculated by dividing the wide gain bandwidth by the expected gain. 
The measured corner frequency is very close to the expected calculations. Data was collected using LabVIEW and plotted with Python. 
Now repeating the same measurements, but with the TL061 op-amp. 
The difference in measured and expected corner frequencies for the TL061 op-amp is quite large, proving the LF411 to be of higher quality, and a prettier penny.