전기전자응용실험 Chapter 2 Filter Report

소개글

2012년 1학기 전기전자응용실험 보고서입니다. 전부 다 영어로 작성되어 있으며, 예비보고서의 경우 주석 충분히 달려 있습니다. 베끼지 않고 작성하여, 이 자료를 쓰셔도 Cheating의 염려가 없습니다.

목차

1. Biquad Filter
2. RC Filter
① Experiment`s goal
② Design procedure
③ Measurement results
④ Discussion

본문내용

1. Biquad Filter
This biquad filter was not made in experiment.

2. RC Filter
① Experiment`s goal
Understand the characteristics and operating principles of a 1st order RC HPF.

② Design procedure

This schematic is the connection of regulator, sensor and RC high-pass filter. Since we had to get data using sensor, I add regulator and sensor on the RC high-pass filter schematic. In this figure, sensor output is connected to RC high-pass filter.

Since capacitor`s impedance is 1/j2πfC, it works as open switch when sensor output is DC(f=0). As the frequency increases, impedance of capacitor is reduced, so voltage loaded on resistor increases. That means, circuit output increases. In conclusion, this RC circuit works as high-pass filter.

In this RC HPF, we can control the cut-off frequency by changing element values.
(Since cut-off frequency=). Taking teaching assistance`s advice, we adjusted cut-off frequency to almost 7Hz(7.23432Hz, precisely) by changing element values.(C=0.22uF, R=100kΩ)

참고 자료

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