Lecture18 - Chapter 4

Lecture18 - Chapter 4 - EE216 C ircuit Analysis I Le cture#...

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1 EE216 Circuit Analysis I Lecture # 18 – Chapter 4
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Mesh Current Analysis Method Sometimes abbreviated as Mesh-Current Method. Limited to planar circuits (as opposed to Node Voltage method which applies to non-planar circuits also). Systemic method: 1. e , b e ). 2. Make minimum number of meshes to cover all the essential branches [b e – (n e – 1)] . 3. Label the mesh currents as i 1 , i 2 , etc. in any direction. Usually we take the same direction for all mesh currents. 4. Write one equation for each mesh current using KVL (voltage drop/rise across a loop = 0) 5. Solve these equations simultaneously to find all the mesh current values. 6. Voltage across every element can be found using current relations and use of Ohm’s law.
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3 Mesh-Current Analysis Example 1 n e = 3 b e = 5 Mesh-current eqn = 3 Assuming mesh currents I 1 , I 2 3 flowing in clockwise direction
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4 Mesh-Current Analysis Example 1 0 10 I 10 I 30 2 1 = - - 0 40 I 15 I 40 I 10 3 2 1 = - - + - 0 I 55 I 15 3 2 = + - A 33 . 1 I 2 = A 363 . 0 I 3 = A 78 . 0 I 1 =
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Lecture18 - Chapter 4 - EE216 C ircuit Analysis I Le cture#...

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