ECE 202 Lesson 34

# ECE 202 Lesson 34 - Corner Frequency 1 dB Octave above...

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1 Bode Diagrams ECE 202 Circuit Theory II Lesson 34 Appendix E ( 29 ( 29 dB 3 100 log 20 100 1 1 - = + = j H j j H ϖ

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2 Low Frequency Approximation ( 29 ( 29 dB 0 20log rad/sec 100 for 1 100 1 1 << + = ϖ j H j j H
3 High Frequency Approximation ( 29 ( 29 100 log 20 20log rad/sec 100 for 100 1 100 1 1 ϖ - + = j H j j j H

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4 High-Frequency Approximation 10 2 10 3 10 4 -40 -35 -30 -25 -20 -15 -10 -5 0 ϖ ( 29 100 log 20 10 ϖ -
5 Approximation for All Frequencies 10 0 10 1 10 2 10 3 10 4 -40 -35 -30 -25 -20 -15 -10 -5 0 A dB ϖ

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6 Improving the Approximation Frequency Correction Corner Frequency - 3 dB Octave below

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Unformatted text preview: Corner Frequency - 1 dB Octave above Corner Frequency - 1 dB 7 Quality of Approximation 10 10 1 10 2 10 3 10 4-45-40-35-30-25-20-15-10-5 A dB ϖ 8 Second Example ( 29 + + + = 1000 1 10 1 100 1 ϖ j j j j H 9 dB plot of Second Example 10 10 1 10 2 10 3 10 4-40-35-30-25-20-15-10-5 A dB ϖ...
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ECE 202 Lesson 34 - Corner Frequency 1 dB Octave above...

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