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ECE 231 -3

ECE 231 -3 - ECE-231 Circuits and Systems I Fall 2011...

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Unformatted text preview: ECE-231 Circuits and Systems I Fall 2011 Session 3 Dr. Stewart Personick Office: ECEC Room 331 [email protected] Delta-to-Wye Conversion Reference: p71-73 of the course textbook. See Example 3.7 for an application R 3 R 2 R 1 a b c R c R a R b a b c Ra= [ R1R2 + R2R3 + R3R1 ]/ R1 Rb= [ R1R2 + R2R3 + R3R1 ]/ R2 Rc= [ R1R2 + R2R3 + R3R1 ]/ R3 Delta-to-Wye Conversion a b c Rc R a R b R e R d d R d R e a b R3 R 2 R 1 c d Methods for solving for voltages and currents in circuits: Ad-hoc methods The Mesh Current Method The Node Voltage Method A few definitions (from the textbook) • A node is a point where 2 or more circuit elements join. An essential node is a point where 3 or more circuit elements join 8 nodes 2 essential nodes = node A few definitions (from the textbook) • A node is a point where 2 or more circuit elements join. An essential node is a point where 3 or more circuit elements join • A branch is a path that connects 2 nodes ( 1 highlighted ) 6 nodes 2 essential nodes = node A few definitions (from the textbook) • A node is a point where 2 or more circuit elements join. An essential node is a point where 3 or more circuit elements join • A branch is a path that connects 2 nodes ( 1 highlighted ) 6 nodes 2 essential nodes = node A few definitions (from the textbook) • A node is a point where 2 or more circuit elements join. An essential node is a point where 3 or more circuit elements join • A branch is a path that connects 2 nodes ( none highlighted ) 6 nodes 2 essential nodes = node A few Definitions (from the...
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ECE 231 -3 - ECE-231 Circuits and Systems I Fall 2011...

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