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gimini75 said:whats the transfer function of this simple High Pass filtre circut:
if R = 10000 ohm
C = 220 nF
gimini75 said:Sorry, what did you got? Iam not sure about the transfer function and I don't know how to find it, if you found it, please let me know?
gimini75 said:I found that the Transfer functon is:
Ts = 0.0022 / (0.0022s + 1)
Is it wright?
gimini75 said:This what i have done step by step:
V(s) = R I (s)
V(s)/I(s) = R =ZR
V(s)/I(s) = 1/Cs = ZC
Transfer function = Vo/Vi = ZR / (ZR + Zc) = R / (ZR + 1/Cs)
= [R / (R + Zc)] x Zc/Zc
= RC / (RCs + 1)
R (resistance) = 10 kilo ohm
C (capacitance) = 220 nF
Therefore the transfer function for the High Pass will be:
0.0022 / (0.0022S + 1)
gimini75 said:Yes but it gives the same answer as mine if u put the value of R and C, I have tried this transfer function in MATLAB but it is incorrect transfer function?
gimini75 said:Hi
Can you please discuss the features of Low pass and High pass filters for me and suggest their application areas?
Thanks
gimini75 said:Thanks
I think the features of HPF and LPF are in the simpleist circuit is when Vo is applied to a HPF the high frequency can pass easily but in a LPF the low frequency can pass easily that's what I think I don't know if Iam wrong?
gimini75 said:I think the typical application of HPFs and LPFs is in the audio sound system?
A high pass filter is an electronic circuit that allows high-frequency signals to pass through while attenuating or blocking low-frequency signals.
The transfer function of an R & C high pass filter is equal to the ratio of the output voltage to the input voltage and is given by H(s) = sRC / (1 + sRC), where s is the frequency in radians per second and RC is the product of the resistance and capacitance values in the circuit.
A high pass filter works by using a combination of resistors and capacitors to create a voltage divider. This divider attenuates low-frequency signals, allowing only high-frequency signals to pass through.
The cutoff frequency of a high pass filter is the frequency at which the output voltage is attenuated by 3dB or half of its original value. It is given by fc = 1 / (2πRC), where R is the resistance and C is the capacitance in the circuit.
High pass filters are commonly used in audio systems to remove low-frequency noise and improve the overall sound quality. They are also used in communication systems to remove unwanted low-frequency signals and in electronic circuits to protect sensitive components from low-frequency interference.