(adsbygoogle = window.adsbygoogle || []).push({}); You are given a low pass filter of 50nF and a resistor of 100 KOhm.

a) Draw the circuit diagram;

b) Calculate the 3dB frequency;

c) Calculate the impedance of the series circuit of R and C and draw it in the complex plane at

about 2 decades around the 3dB point and at the 3dB point.

d) Draw the circuit diagram for a high pass filter with same components.

I am asked to calculate the 3db freq, right? is this the right formula f = 1 / (2piRC) ?

and afterwards calc the impedance z = R + jXc where Xc = 1 / (2pifC) ?

and then getting the decades, say our freq was 31.8Hz , 2 decades below would b 0.318? 2 decades above would b 3180?

then we should use those values of f to determine the Xc at those frequencies, and then find z at each of these frequencies?

then we plot a graph showing all the z's?

pls smne help me coz i'm totally confused!!!

thanks in advance!

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# Circuits and low pass filters

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