Experiment 3.pdf

# Experiment 3.pdf

• 4

This preview shows page 1 - 2 out of 4 pages.

Experiment 2: Exponential Waveforms Purpose: Observe the step response of circuits containing dynamic elements. Equipment Required: • 1 - Oscilloscope • 1 - Function Generator • 1 - Protoboard • 1 - 1 k (ohm) 1/4W resistor • 1 - 0.1 μF capacitor • 1 - 0.47 μF capacitor Prelab: Assume the output resistance of the function generator ( 𝑅 𝑇𝐻 in Fig. 1) is 50 . Using a circuit analysis software, run the circuit of Fig. 1. Use the transient analysis option and an 8 𝑉 ?? square wave source with no DC offset. You will need to determine an appropriate source frequency so that the voltage across the capacitor reaches its final value before the source changes to the next voltage level. The results of the analysis should look similar to Fig. 2. Print out these results. The equation describing the output 𝑣 𝐶 (𝑡) of the circuit of Fig. 1 is of the form: 𝑣 𝐶 (𝑡) = (𝐼𝐶 − 𝐹𝐶)𝑒 −𝑡 𝑇 𝐶 + 𝐹𝐶 Assume the function generator produces a square wave with a peak-to-peak voltage of 8 V, no DC offset ( 𝑉 𝑎𝑣𝑔 = 0𝑉) , and a period 𝑇 ? greater than 10 𝑇 𝐶 . Under these circumstances the initial condition IC and the final condition FC will be equal to the maximum and minimum voltages of the source. In this case, the assignment of +4 V or 4 V to the initial condition IC depends on whether the charging cycle or the discharging cycle are being observed, as shown in Fig. 2. For the discharging cycle the initial condition 𝐼𝐶 = +4 𝑉 and the final condition 𝐹𝐶 = −4 𝑉 . The opposite is true for the charging cycle, 𝐼𝐶 = −4 𝑉 and 𝐹𝐶 = +4 𝑉 .

Subscribe to view the full document.

You've reached the end of this preview.
• Winter '19
• Oscilloscope

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern