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Duave
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Homework Statement
(a) The input capacitor and the voltage divider network form another high pass filter. Calculate f3dB for the input high pass filter made with C = 4.7uF and the appropriate R value.
(b) calculate the f3dB for the output pass filter made with C = 4.7uF and R = 100K
https://scontent-b.xx.fbcdn.net/hphotos-ash3/t1/1660900_10151903463085919_1915092235_n.jpg
Homework Equations
f = 1/2*pi*R*C
2^N=high frequency/low frequency
The Attempt at a Solution
Question (a)
First attempt:R1 = 10k
R2 = 4.7k
R(total) = (10k)(4.7k)/(10K)+(4.7k)
R(total) = 3.20k
Hence the frequency is:
f = 1/ 2*pi*(3.20k)*(4.7uF)
f= 1/0.094499
f= 10.582HzSecond attempt:R1 = 4.7k
R(total) = 4.7k
Hence the frequency is:
f = 1/ 2*pi*(4.7k)*(4.7uF)
f= 1/0.1388
f= 7.205Hz
Question (b)
f = 1/ 2*pi*(100k)*(4.7uF)
f= 1/2.953
f= 0.3386Hz
Are any of the frequency values that were calculated correct?
Thank you