Lab 8 Report

Lab 8 Report - Lab 8 Report C Sample Calculations In the pre-lab students were asked to calculate unknown resistor values given circuit parameter

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Lab 8 Report C. Sample Calculations In the pre-lab, students were asked to calculate unknown resistor values given circuit parameter values such as A0 (DC gain), capacitor values and resonance frequency. Using the following equations, students were able to solve for the resistor values. A 0 = − R 2 R 3 ω0 = 1/ ( R 2 R 4 C 1 C 2) (resonance frequency) Q = R 1 / √ R 2 R 4 * √(C1/C2) (quality factor) D. Discussion In Part A, students used the oscilloscope to analyze the output of a bi-quad filter circuit built on the breadboard when a 100Hz, 1 Vpp square function was used as the input. The output waveform is a highly underdamped voltage response that appears to oscillate for a long period of time. In part B, this procedure was repeated for quality factors of 0.3 and 3, and since these numbers are smaller, a larger amount of damping
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was expected. For a Q of 0.3, the voltage response is overdamped. We noticed how the voltage doesn’t seem to oscillate at all, and reaches its final value at a faster rate. For a
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This note was uploaded on 02/16/2009 for the course ECEN 214 taught by Professor Su during the Fall '08 term at Texas A&M.

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Lab 8 Report - Lab 8 Report C Sample Calculations In the pre-lab students were asked to calculate unknown resistor values given circuit parameter

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