EE40_Fall08_Lecture3 - EE40 Lecture 3 Connie Chang-Hasnain...

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Slide 1 EE40 Fall 08 Connie Chang-Hasnain EE40 Lecture 3 Connie Chang-Hasnain 9/3/08 Reading: Chap. 2 Topics: Voltage and current sources; open and short circuits; node, branch and loop; KCL and KVL Parallel and series
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Slide 2 EE40 Fall 08 Connie Chang-Hasnain Short Circuit and Open Circuit • Short circuit – R = 0 b no voltage difference exists – all points on the wire are at the same potential. – Current can flow, as determined by the circuit • Open circuit – R = b no current flows – Voltage difference can exist, as determined by the circuit
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Slide 3 EE40 Fall 08 Connie Chang-Hasnain Short Circuit and Open Circuit Wire (“short circuit”): R = 0 b no voltage difference exists (all points on the wire are at the same potential) • Current can flow, as determined by the circuit Air (“open circuit”): R = b no current flows • Voltage difference can exist, as determined by the circuit
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Slide 4 EE40 Fall 08 Connie Chang-Hasnain Terminology: Nodes and Branches Node : A point where two or more circuit elements are connected Branch : Every intermediate node within the branch has only 2 elements connecting to it
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Slide 5 EE40 Fall 08 Connie Chang-Hasnain Circuit Nodes and Loops • A node is a point where two or more circuit elements are connected. • A loop is formed by tracing a closed path in a circuit through selected basic circuit elements without passing through any intermediate node more than once
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Slide 6 EE40 Fall 08 Connie Chang-Hasnain Ideal Voltage Source • Circuit element that maintains a prescribed voltage across its terminals, regardless of the current flowing in those terminals
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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.

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EE40_Fall08_Lecture3 - EE40 Lecture 3 Connie Chang-Hasnain...

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