Low Pass filter.pdf
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This document discusses capacitive reactance and how it varies with frequency. It explains that capacitive reactance decreases as frequency increases, so all the voltage passes through the capacitor at high frequencies rather than low frequencies. This concept is key to understanding how low-pass and high-pass filters work by allowing either low or high frequencies to pass through based on the capacitive reactance.
Low Pass filter.pdf
- 1. Basics Circuits by Thomas L floyd PG 835
- 3. Output is taken across the capacitor.
- 4. We know When input is 0Hz(DC) is gradually decreases as frequency increases. All the voltage goes through capacitor. Critical frequency Xc = 1 2πfcC Why capacitive reactance is less at high frequency? This concept is essential in- order for understanding Low pass and high pass filter. Youtube video Xc = ∞ Vout fc = R