Signal filtering is one of the most fundamental practices in signal processing. The filters are widely incorporated in the signal processing circuits due to their indomitable role in data acquisition and also to get rid of all the unnecessary signals and frequencies which interfere with the quality of the main signal. These unwanted signals are commonly referred to as noises. Once the signal has been filtered, they are then processed as either analog or digital depending on the signals application. Some signals are however weak and thus require an amplification circuit so that the filtering circuits can be consistent. ...
Essays on RC Circuit
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Objective:
This experiment is about the implementation and testing of low-pass, high-pass, and band-pass filters. The frequency response of each filter is analyzed using Bode plots. The properties of passive devices will be used to explain the response.
Equipment List:
EQUIPMENT Oscilloscope 2 Function Generators
COMPONENTS
1µF Capacitors 1 kΩ Resistors
Relevant Theory/Background Information:
A low-pass filter is a filter that allows frequencies below a cut-off frequency while filtering out frequencies above this cut-off frequency. For a simple series RC circuit, a low-pass filter can be created by connecting the input signal to the resistor and taking the output from the capacitor. The cut-off frequency ...