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Active Low Pass Filter Bode Plot Analysis using Siglent SDS2102X Plus Oscilloscope [Part-2]

by: May 26,2021 551 Views 0 Comments Posted in Technology

Siglent SDS2102X Plus Oscilloscope

Here is the part-1 article

https://www.pcbway.com/blog/technology/Active_Low_Pass_Filter_Circuit_Analysis_using_Siglent_SDS2102X_Plus_Oscilloscope_[Part_1].html


In the second part of the active low pass filter analysis videos, I used the bode plot to analyze the low pass active filter's behavior in practice. There are not many devices that can calculate and demonstrate the bode plot. I used Siglent SDS2102X Plus oscilloscope to plot the bode curve. The cut-off frequency of the filter, in theory, is around 722Hz, however, in practice, the result would be different. The cut-off frequency of a filter is where the X-Axis (frequency) meets the Y-Axis (amplitude) at the -3dB point. The Siglent SDS2000x plus series oscilloscopes offer tons of features for bode plot analysis in practice.


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