paraphrase a report ( Electrical Engineering Fundamentals )

Purpose

In this experiment developed a familiar habit with the controls and displays of the oscilloscope and function generator. Then practiced taking measurements with the oscilloscope and properly stating the known boundaries. Configure a simple design circuit using a 10kΩ resistor and a 4.7kΩ resistor as shown in figure 2.1 on lab manual.

Equipment Used

Bread Board

AC Power Supply

Oscilloscope

Function Generator

Grounding

Digital Multimeters

Parts Used

Banana lead

Alligator clips

1k resistor

2k resistor

Black wire

Red wire

Procedure

Step 1: learned how to use a function generator which produces AC voltage. For this experiment, even though there is a sine wave, square wave, and saw-tooth output option, we used the sine wave option to display on the oscilloscope. Note when setting up the parameters on the function generator that sometimes it makes assumptions. In this case, it also assumed that an additional resistor attached to our circuit, which altered the peak to peak voltage.

Step 2: setting the proper parameters on the function generator and hooking it up to the oscilloscope, adjusted the time and voltage per division on the oscilloscope. The time/division = 50s, and the voltage/division = 1.00V. Then make the graph on the display as large as possible without the peak and trough of the sine wave being cut off.

Step 3: Next, the circuit shown in Figure 2.1 and made the proper connections to the scope.

.

a) Observing the display on the oscilloscope, it showed a sine wave.

b) the straight line displayed on the oscilloscope, measured VL = 0.640 ± 0.032 V, and we measured the frequency to be 1000 ± 20s. Therefore, our fmax = 1020s, fmin = 980s,

VL Upper = 0.671 V and our VL Lower = 0.607 V. From this, we calculated m = 0.320 ± 0.032. Our mupper = 0.366 and mlower = 0.304. Our fdial = 1kHz.

c) calculated the percent error between the frequency setting of the function generator fmeas and fdial.

% errormax = x100% = 2%

% errormeas = x100% = 0%

% errormin = x100% = -2%

Conclusion

The pre-lab has assisted in recognizing which quantities was made were right and wrong. As stated above, which may have not been seen as incorrect unless we knew the theoretical value. Looking forward to explore the many functions of the function generator and digital oscilloscope, and the analog oscilloscope as well. As well, knowledge better strategies on how to fix problems in the experiment.