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Unformatted text preview: V B Z V A I R 1 V 1 j/ C R 2 I 1 j L V A V B V C R 1 V 1 R 2 I 1 j L I A I B j/ C I C Lesson 35 AC Circuit Analysis III (Sections 85 and 86) (CLOs 84 and 85) We did the circuit theorems last lecture and will do Node Voltage and Mesh Currents in this one. It is important to solve several OpAmp circuits since they will need them later to do active filters. Start by revisiting how to write Node Voltage equations but substitute a Z in place of an R .: Z V V I B A ~ ~ ~ = Then jump directly into an example. The node equations are: 1 2 C 2 B 1 1 2 C 2 1 B 1 C 2 B C C B 2 C B 1 A B B 1 A 1 1 1 1 1 1 I L j R V R V R V R V C j R R V I L j V R V V V C j V R V V R V V V V V ~ ) ( ~ ) ( ~ ~ ) ( ~ ) ( ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ = + + = + + =  + =  + + = These can then be solved using one of several methods to find B V ~ and C V ~ . Next, discuss Mesh Equation analysis and use the same circuit: 2 1 2 B A 1 C 1 B 1 A 1 C B 2 C B A B B B A 1 C A 1 A R I L j R I I R I V I R I I I L j I R I I I I I I I R I I V I C j C j C j C j C j C j ~ ) ( ~ ) (...
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 Spring '08
 MAURICIODEOLIVERIA

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