ECE 206 - Write-up Lab 3 - Transient Response Experiment 3...

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Transient Response Experiment 3 ECE 206 Experiment #3 Transient Response by Mauro Rodriguez TA: Johnson Liu Section: F6 Bench Number 4 ECE 206 Mauro Rodriguez
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Transient Response Experiment 3 Question 1: Capacitors (and inductors) are often used to create “filters” which preferentially permit low frequency signals to pass, while reducing (attenuating) high frequency signals; such a device is called a low pass filter. It is equally possible to design a filter that permits high frequency signals to pass, while suppressing low frequency signals; this is called a high pass filter. In part B, which circuit (the one in step 1 or the one in step 5), was the low-pass filter, and which circuit was the high-pass circuit? Figures of Circuits in Part B Figure 1 Figure 2 The circuit in Figure 1 is a low-pass filter as seen from the obtained results in Step 4 of Part B. In Step 4 of Part B, the observations made were that as the input signal of the frequency was increased the voltage read across the capacitor (the amplitude on the oscilloscope’s readings) decreased and the opposite when the frequency was decreased. The circuit in Figure 2 is a high- pass filter as seen from the obtained results in Step 5 of Part B. In Step 5 of Part B, the observations made were such as the frequency of the input signal was increased the voltage read across the resistor (the amplitude on the oscilloscope’s readings) increased and the opposite when the frequency was decreased. Question 2: Calculate the time constant
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This note was uploaded on 10/24/2011 for the course ECE 206 taught by Professor Zhang during the Spring '08 term at University of Illinois, Urbana Champaign.

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ECE 206 - Write-up Lab 3 - Transient Response Experiment 3...

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