ECE201_7_Qi

# ECE201_7_Qi - 1 ECE 201 Lecture 7 Announcements • Test on...

This preview shows pages 1–6. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 ECE 201 Lecture 7 Announcements • Test on next Thur. 9/14, 8 days from now. • Test covers Lectures 1-9 • Review Session: Mon. 9/11, 7-9pm WTHR 200 • It would be good to review Matlab and Linear Algebra (read Appendix A1, p954~960). 2 Summary of previous lecture • Dependent sources as 3-terminal active devices; • Active elements introduce novel circuit behaviors, such as negative resistance; • Non-ideal sources and their models; • Simplifying circuit topologies. 3 In this lecture • We learn how to write down equations (KCLs, KVLs and Ohm’s laws) for a circuit systematically ; • First we need to know the unknowns: all branch currents and branch voltages; • Identify the number of independent variables, and write down the same number of independent equations, no more and no less. 4 Nodes, Branches and Loops • 5 nodes • 8 branches • 4 loops (4 unknown loop currents) • Select one node as the reference V reference =0 (typically the one with the largest number of connections) • Assign all other nodes a voltage (4 unknown node voltages • Branch voltages: V jk =V j-V k 5 3A R1 2Ω R2 5Ω R3 1Ω 2A G A B Ex 1: Determine V A and V B ....
View Full Document

## This note was uploaded on 02/03/2012 for the course ECE 201 taught by Professor All during the Fall '08 term at Purdue.

### Page1 / 18

ECE201_7_Qi - 1 ECE 201 Lecture 7 Announcements • Test on...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online