lecture_21_F2011

# lecture_21_F2011 - Lecture 21 LOWPASSFILTER HIGHPASSFILTER...

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Lecture 21 Chapters 29 and 30 Page 1 LOW-PASS FILTER HIGH-PASS FILTER Example:

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Lecture 21 Chapters 29 and 30 Page 2 Problem: A low-pass RC filter has a crossover frequency of 6280 rad/s . What is the crossover frequency if the value of the capacitor is doubled?
Lecture 21 Chapters 29 and 30 Page 3 Problem Calculate V R and V C if the ε mf frequency in the figure below is 10 kHz , R = 150 , C = 80 nF , and ε = 10Vcos ϖ t .

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Lecture 21 Chapters 29 and 30 Page 4 Question: The resistor whose voltage and current phasors (shown here) has resistance 1. R > 1 2. R < 1 3. It’s not possible to tell. Designing a Filter: Condition: you have an AM radio that receives signals in the radio frequency region of about 1 MHz . The basic radio circuit is an antenna, which produces a small oscillating voltage when it absorbs the energy of an E/M wave, and an amplifier. Your neighbor, unfortunately, is a short-wave radio enthusiast who interferes with your reception in the 10 MHz region. Having just finished Dr. Bandy’s physics class, you decide to solve this
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## This note was uploaded on 01/10/2012 for the course PHYS 2114 taught by Professor Bandy during the Spring '08 term at Oklahoma State.

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lecture_21_F2011 - Lecture 21 LOWPASSFILTER HIGHPASSFILTER...

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