EE40_Fall08_Lecture5

# EE40_Fall08_Lecture5 - EE40 Lecture 5 Connie Chang-Hasnain...

This preview shows pages 1–4. Sign up to view the full content.

Slide 1 EE40 Fall 08 Connie Chang-Hasnain EE40 Lecture 5 Connie Chang-Hasnain 9/8/08 Reading: Chap. 2 Topics: Node-Voltage Analysis Floating voltage source Dependent sources Superposition, Norton/Thevenin Equivalent Circuit

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

View Full Document
Slide 2 EE40 Fall 08 Connie Chang-Hasnain Nodal Analysis • Choose a reference node (“ground”) • Look for the one with the most connections! • Set its voltage to zero. • Define the unknown node voltages Group the nodes that are connected by voltage sources into supernodes (the reference may also become a supernode) • Write KCL at each unknown node – Sum of currents into the node = 0 – Use Ohm’s law to express the currents of each element connected directly to the node in terms of the node voltages • Solve the set of independent equations – n-1 equations for n-1 unknown node voltages where n is the number of nodes.
Slide 3 EE40 Fall 08 Connie Chang-Hasnain A “floating” voltage source is one for which neither terminal is connected to the reference node through voltage sources, e.g. V LL in this circuit with the chosen reference (which was stupidly chosen): Observation : Since Va is determined by Vb and vice versa we need only one variable to work with to handle both these nodes. We will

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.

## This note was uploaded on 10/24/2009 for the course EE 40 taught by Professor Chang-hasnain during the Fall '07 term at University of California, Berkeley.

### Page1 / 12

EE40_Fall08_Lecture5 - EE40 Lecture 5 Connie Chang-Hasnain...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online