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Low-Pass, High-Pass, Band-Pass & Band-Stop
Inside this lesson
- Classify a filter as low-pass, high-pass, band-pass, or band-stop from its magnitude response versus frequency
- Identify RC and RLC topologies that realize each of the four basic filter types
- Explain why taking the output across the resistor versus the capacitor of an RC network flips low-pass into high-pass
- Compute the resonant frequency of a series RLC band-pass filter and verify that the reactive parts cancel at resonance
- Describe how cascading filter sections steepens the rolloff and why loading between stages must be managed
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Educational content covering topics typical of a first- and second-year electrical engineering curriculum. Not a substitute for accredited coursework, and not suitable for real circuit or system design without review by a licensed professional engineer.