(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Using your results, calculate the 3dB frequency of the RC filter.

3. The attempt at a solution

Basically in our lab, we made a simple series RC low pass filter. We put in a 16V peak to peak signal at varying frequencies below, and measured the output voltage at the capacitor (again peak to peak) on the scope. Now if I want to calc the 3dB frequency from my results, would I plot this on a graph and look for the 3dB point? I have tried this, but I think I am going wrong somewhere. The second table would be what Im trying to plot. I took first column is just the log of the frequency. The second column is 10log(Vout/Vin). It just doesnt seem right.

fin (Hz) Vo (V)

50 13.8

100 11.4

150 9.6

200 8.2

250 7.2

300 6.4

1.698970004 -0.749974923

2.000000000 -1.579527115

2.176091259 -2.326214759

3.301029996 -3.010299957

2.397940009 -3.665315444

2.477121255 -4.087127349

sorry for the formatting!

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# Calculating 3dB frequency.

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