Note: You need to use the yellow wire instead of the red wire this time to apply waveform
generator. Remember to connect ground wire like in previous step. Include the screen-
capture of waveform generator and the voltmeter window. Also remember to take the
picture of the breadboard again.
3.
Application of a sinusoidal waveform at the input: Here the breadboard set-up remains
same as step #2 (no picture of breadboard needed). We will still have the waveform
generator at the input, but this time it will provide us a sinusoidal voltage rather than a
constant 3V. For this sinusoidal, select 2.5V amplitude (5V peak to peak) and 200 Hz
frequency. NOTE that values are different than the one used in the tutorial. Do NOT use
the values given in tutorial video. The offset value should be again taken as 0.
Although we are using the same channels to view voltages V1 and V2, we are going to
select oscilloscope (scope). First make sure to capture waveform generator window. Then,
you need to take many screenshots of scope screen. a)
Using cursors, determine the period of the sinewave (does not matter input or the
output wave is used). Write down the frequency and period below that figure in your
report. (After clicking on autoset, you may still need to adjust time-base and ranges to
let only few cycles of sinusoidal showing, so you can comfortably place cursors)
b)
Then using cursors determine the max and min value of each waveform (input and
output). You need two screencaptures. Under each figure, in a small sentence calculate
the peak to peak value. c)
You need to repeat 3a and 3b, but this time you will use Measure command in the
menu. Take a screencapture of the results window as shown on last slide of tutorial.
Questions for Lab Report:
1.
Using the multimeter, measure the exact amount of resistance for R1 and R2.
Calculate the tolerance of each resistor. State reasons.
2.
Using exact values of resistors, calculate the voltages on each resistor for Vs=3V and
compare them to the measured values. 3.
Compute the percentage error in the two measurements and provide a brief
explanation for the error.
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