연세댿� 전기전자 응용실험 예비보고서 2. 필터(Filter)

The focus of this experiment is to understand filter and characteristics of RC filter and tow-thomas biquad filter. We`ll design tow-thomas biquad band pass filter, RC HPF that has gain almost one and observe output waveform of the RC HPF using sensor. Of course, before we experiment this, we have to study filter written in a material.
The dc-dc converter we made before, puts input voltage ±5v to ua741 that is a op amp used in tow-thomas biquad filter. The input voltage of whole circuit, Vin will be appropriate ac voltage.
In this report, we made a schematic of tow thomas biquad filter that has 10Khz and 2 Quality factor as a demand of material. According of the equation of parameters, we can calculate the frequency using below equation.

Therefore we can define values of components refering these equations and design circuit using Pspice. Then we`ll compare result of pspice with result of MATLAB and the difference of these results are refered as below in this report. The second thing, we analysis values of R and C in the 1st passive HPF to make it which has nearly one gain before we design it.