lecture04

# lecture04 - Announcements Visit the class website to see...

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Lecture 4, Slide 1 EECS40, Fall 2003 Prof. King Announcements Visit the class website to see updated TA section assignments http://www-inst.eecs.berkeley.edu/~ee40 Lab section 13 (Mondays 6-9PM) is cancelled Prof. King’s Office Hour tomorrow (Thu. 9/4) will be held from 8:30AM-9:30AM HW assignments will NOT be accepted in class. Turn in your assignments BEFORE class on Friday in 240 Cory. Lecture 4, Slide 2 EECS40, Fall 2003 Prof. King Lecture #4 OUTLINE • Circuit element I-V characteristics • Construction of a circuit model • Kirchhoff’s laws – a closer look Reading (Finish Chapter 2)

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Lecture 4, Slide 3 EECS40, Fall 2003 Prof. King Current vs. Voltage ( I-V ) Characteristic • Voltage sources, current sources, and resistors can be described by plotting the current ( i ) as a function of the voltage ( v ) • Later, we will see that the I-V characteristic of any circuit consisting only of sources and resistors is a straight line. + v _ i Lecture 4, Slide 4 EECS40, Fall 2003 Prof. King I-V Characteristic of Ideal Voltage Source 1. Plot the I-V characteristic for v s > 0. For what values of i does the source absorb power? For what values of i does the source release power? 2. Repeat (1) for v s < 0. 3. What is the I-V characteristic for an ideal wire? + _ v s i i + v _ v
Lecture 4, Slide 5 EECS40, Fall 2003 Prof. King I-V Characteristic of Ideal Current Source 1. Plot the I-V characteristic for i s > 0. For what values of v does the source absorb power? For what values of v does the source release power? 2. Repeat (1) for i s < 0. 3. What is the I-V characteristic for an open circuit? i i + v _ v i s Lecture 4, Slide 6 EECS40, Fall 2003 Prof. King I-V Characteristic of Ideal Resistor 1. Plot the I-V characteristic for R = 1 k . What is the slope?

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## This note was uploaded on 08/23/2009 for the course EECS 40 taught by Professor Chang-hasnain during the Fall '08 term at Berkeley.

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lecture04 - Announcements Visit the class website to see...

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