CR active filters find extensive use in communications and instrumentation measurements. a) By considering how the capacitor impedance in Figure 1 varies with frequency, explain if the circuit in Figure 1 acts as a low-pass or high-pass filter. b) Derive the closed-loop gain for the case of very high frequencies. c) Draw a graph that shows the frequency response of the CR active high-pass filter. The y-axis should correspond to gain in dBs and the x-axis to frequency. Make sure that you clearly indicate the 3 dB point and the equation that describes the relationship between ω and CinRin at the cut-off frequency.
CR active filters find extensive use in communications and instrumentation measurements. a) By considering how the capacitor impedance in Figure 1 varies with frequency, explain if the circuit in Figure 1 acts as a low-pass or high-pass filter. b) Derive the closed-loop gain for the case of very high frequencies. c) Draw a graph that shows the frequency response of the CR active high-pass filter. The y-axis should correspond to gain in dBs and the x-axis to frequency. Make sure that you clearly indicate the 3 dB point and the equation that describes the relationship between ω and CinRin at the cut-off frequency.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Question
CR active filters find extensive use in communications and instrumentation
measurements.
a) By considering how the capacitor impedance in Figure 1 varies with frequency,
explain if the circuit in Figure 1 acts as a low-pass or high-pass filter.
b) Derive the closed-loop gain for the case of very high frequencies.
c) Draw a graph that shows the frequency response of the CR active high-pass
filter. The y-axis should correspond to gain in dBs and the x-axis to frequency.
Make sure that you clearly indicate the 3 dB point and the equation that
describes the relationship between ω and CinRin at the cut-off frequency.
Transcribed Image Text:Cin Rin
R
A
Vinl
Vout
Figure 1
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