Question

RLC transients Build the circuit shown in Fig 4. The source is a square wave that switches between 0 and 10 V with a frequency of 500 Hz. (If needed, you can change the frequency in order to get clear oscilloscope traces in the following measurements.) 3300 Figure 4. L 30 mH square 47 nF - 0 + 1. Set R2 = 3.3k2. Do a calculation to show that this corresponds to the circuit being overdamped. Then observe the source voltage and the capacitor voltage together on the oscilloscope. Record a set of traces for your report. Use the cursors to measure the 10%-90% rise and fall times. 2. Now set R2 = 0 (e. remove it). Do a calculation to show that this corresponds to the circuit being underdamped. Calculate the expected oscillation frequency. Then observe the source voltage and the capacitor voltage together on the oscilloscope. Use the cursors to measure the frequency of the ringing oscillation. Record a set of traces for your report. Compare the measured frequency to your calculated value. (Include the series resistance of the two inductor when doing the calculations.) 3. Finally, use a 10-k 92 potentiometer for R2. Observe the capacitor voltage together with the source voltage on the oscilloscope. Note how you can make the circuit switch back and forth between underdamped and over-damped behavior by adjusting the value of the pot.
do not need to build the circuit, just solve the question 1,2 and 3

Answer 1

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