first-order low pass active filter

Version 1.0.0 (44.4 KB) by Marwa Abdelkareem
Modeling of active low pass filter by using Simulink / Simscape
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Updated 18 Sep 2024

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The primary components in an active LPF are:
Operational Amplifier (Op-Amp): The heart of the circuit, amplifying the filtered signal. Resistors: Determine the cutoff frequency and gain.
Capacitor: Blocks high-frequency signals.
Then the operation of an active low-pass filter is verified by analyzing its frequency gain equation, which shows that:
1.Low frequencies: Pass through with minimal attenuation
2.High frequencies: Are significantly attenuated
3. Cutoff frequency: The point at which the gain drops to 70.7% of its maximum value.
https://youtu.be/4uwa1PHpAGQ?si=WcoT4oY6xaMQpF_4

Cite As

Marwa Abdelkareem (2025). first-order low pass active filter (https://in.mathworks.com/matlabcentral/fileexchange/172860-first-order-low-pass-active-filter), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2024a
Compatible with any release
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Version Published Release Notes
1.0.0