1 / 12

EEE 302 Electrical Networks II

EEE 302 Electrical Networks II. Dr. Keith E. Holbert Summer 2001. Circuit Analysis Techniques. While Obeying Passive Sign Convention Ohm’s Law; KCL; KVL Voltage and Current Division Series/Parallel Impedance combinations. Kirchoff’s Current Law ( KCL ). i 1 (t). i 5 (t).

philippa
Download Presentation

EEE 302 Electrical Networks II

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EEE 302Electrical Networks II Dr. Keith E. Holbert Summer 2001 Lecture 2

  2. Circuit Analysis Techniques • While Obeying Passive Sign Convention • Ohm’s Law; KCL; KVL • Voltage and Current Division • Series/Parallel Impedance combinations Lecture 2

  3. Kirchoff’s Current Law (KCL) i1(t) i5(t) The sum of currents entering the node is zero: Analogy: mass flow at pipe junction i2(t) i4(t) i3(t) Lecture 2

  4. + - + v(t)2 + v(t)1 v(t)3 - - Kirchoff’s Voltage Law (KVL) • The sum of voltages around a loop is zero: • Analogy: pressure drop thru pipe loop Lecture 2

  5. In General: Voltage Division Consider N impedances in series: Source voltage(s) are divided between the resistors in direct proportion to their resistances Lecture 2

  6. In General: Current Division Consider N impedances in parallel: Special Case (2 resistors in parallel) Lecture 2

  7. Class Example • Extension Exercise E8.12 Lecture 2

  8. Steps of Nodal Analysis 1. Choose a reference node. 2. Assign node voltages to the other nodes. 3. Apply KCL to each node other than the reference node; express currents in terms of node voltages. 4. Solve the resulting system of linear equations. Lecture 2

  9. Class Example • Extension Exercise E8.13 Lecture 2

  10. Steps of Mesh/Loop Analysis 1. Identify mesh (loops). 2. Assign a current to each mesh. 3. Apply KVL around each loop to get an equation in terms of the loop currents. 4. Solve the resulting system of linear equations. Lecture 2

  11. Class Example • Extension Exercise E8.14 Lecture 2

  12. Nodal Analysis Recipe 1&2) Identify and label N nodal voltages plus the ground node (V=0) 3) Apply KCL at N nodes (supernode makes constraint eq.) 4) Solve for the nodal voltages Loop Analysis Recipe 1&2) Identify and label N mesh currents 3) Apply KVL at the N meshes 4) Solve for the mesh currents Nodal and Loop Analyses Lecture 2

More Related