(a) Determine the critical frequency. Then, without changing the response curve, adjust the component values in the filter to make it an equal value filter. Select C= 0.22 µF for both stages. (b) Convert the filter to a high-pass filter with the same critical frequency and response characteristic. (c) Make the necessary circuit modification to reduce by half the critical frequency in

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Figure 1 shows an active low-pass filter. As an engineer, you are expected to solve several
concerns, including:
R2
0.22 µF
Vin
R3
R6
0.22 µF
6.8 kM
C2
0.1 µF I
4.7 kN
4.7 kN 6.8 kN
Vout
R3
1.0 kn
0.1 µF
* 6.8 kM
R.
6.8 kN
R
5.6 kM
Figure 1
(a) Determine the critical frequency. Then, without changing the response curve, adjust
the component values in the filter to make it an equal value filter. Select C= 0.22 µF
for both stages.
(b) Convert the filter to a high-pass filter with the same critical frequency and response
characteristic.
(c) Make the necessary circuit modification to reduce by half the critical frequency in
(а).
Transcribed Image Text:Figure 1 shows an active low-pass filter. As an engineer, you are expected to solve several concerns, including: R2 0.22 µF Vin R3 R6 0.22 µF 6.8 kM C2 0.1 µF I 4.7 kN 4.7 kN 6.8 kN Vout R3 1.0 kn 0.1 µF * 6.8 kM R. 6.8 kN R 5.6 kM Figure 1 (a) Determine the critical frequency. Then, without changing the response curve, adjust the component values in the filter to make it an equal value filter. Select C= 0.22 µF for both stages. (b) Convert the filter to a high-pass filter with the same critical frequency and response characteristic. (c) Make the necessary circuit modification to reduce by half the critical frequency in (а).
(d) For the filter in Question 1(c), how would you increase the critical frequency and
increase the gain?
(e) Calculate all related circuit parameters for a Butterworth Sellen-key low-pass filter
with a cut-off frequency, f = 10 kHz and capacitor, C = 0.01 µF. Assume equal C
value for all RC circuit, unity gain and M=2.
Transcribed Image Text:(d) For the filter in Question 1(c), how would you increase the critical frequency and increase the gain? (e) Calculate all related circuit parameters for a Butterworth Sellen-key low-pass filter with a cut-off frequency, f = 10 kHz and capacitor, C = 0.01 µF. Assume equal C value for all RC circuit, unity gain and M=2.
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