ECE201_Lecture02

# ECE201_Lecture02 - E E201 Linear Cir cuit Analysis I L...

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

1 EE201 Linear Circuit Analysis I Lecture 2. Topic: Voltage, sources, power. 1. Voltage (1) What is voltage? Potential difference (a falling ball / water flowing in a pipe) (2) unit: volt, V 1 V = 1 Joule/Coulomb (3) symbol: V — constant or average voltage v(t) or v — time-varying voltage (4) polarity V AB : the voltage drop from A to B i.e. V + - V BA : the voltage drop from B to A i.e. V - + * The assignment of letter labels or +, – signs is arbitrary, just like or for currents. * A negative V AB means an increase in potential from A to B. * We use +, – with all voltages. * We use letters to designate points along a circuit. * We use subscript numbers to refer to one of many voltages (e.g., V 1 , V 2 , V X , …)

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

View Full Document
2 Practice Problem 1. Find the voltage V AD . (5) voltage of battery 2. Sources (1) independent voltage sources Constant voltage source: battery Variable voltage source: + V o V o > 0 at all times
(2) dependent voltage sources (3) independent current source

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 04/19/2011 for the course ECE 201 taught by Professor All during the Spring '08 term at Purdue.

### Page1 / 7

ECE201_Lecture02 - E E201 Linear Cir cuit Analysis I L...

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

View Full Document
Ask a homework question - tutors are online