Lecture 23+24_v2 - Spring 2011 ECE 2100, Cornell...

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Unformatted text preview: Spring 2011 ECE 2100, Cornell University, Prof. A. Molnar 1 Lectures 23 and 24 Sinusoids into RLC circuits When Sinusoids turn on. Spring 2011 ECE 2100, Cornell University, Prof. A. Molnar 2 RLC under sinusoidal drive As before, I(t)=Acos( t+ ) To find V, we convert to complex, and find Z: Look at 3 cases: b 0, Z b j L m b 0, b /2 (90) b , Z b-j/( C) m b 0, b- /2 (-90) = (LC) , Z= R m b R, b 2 1 1 || 1 || 2 2 o RC j LC C j L j C j R Z- + = = L C R I(t) real imag = o /3 = o =3 o V time Responses for different values of o Spring 2011 ECE 2100, Cornell University, Prof. A. Molnar 3 Another RLC As before, Vin(t)=Acos( t+ ) To find Vout, we convert to complex, do voltage division: Look at 3 cases: b 0, Vout b Vin m b 1, b b , Vout b Vin(-1/( 2 LC)) m b 0, b- (-180) b (LC) , Vout b Vin(-j/( RC))...
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This note was uploaded on 06/10/2011 for the course ECE 2100 taught by Professor Kelley/seyler during the Spring '05 term at Cornell University (Engineering School).

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Lecture 23+24_v2 - Spring 2011 ECE 2100, Cornell...

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