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Unformatted text preview: Unit 3: Node and Mesh Circuit Analysis Unit 3.4 Superposition Chapter 4 Learning Objectives What are linear circuits? What is the Superposition Principle? How can we turn off a voltage source? How can we turn off a current source? When can superposition be used? Linear Circuit Elements Resistors are linear circuit elements: V = IR is clearly a straight line. Ideal capacitors and inductors are linear. Independent sources are linear. Dependent sources are linear provided that the output voltage or current is proportional to the first power of a specified voltage or current (or a sum of these). Nonlinear Circuit Elements Semiconductor devices are nonlinear. Diodes Transistors Many other real world devices are nonlinear although their response may be approximately linear over a limited range. Linear Circuits A linear circuit is a circuit composed exclusively of linear circuit elements....
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This note was uploaded on 03/22/2008 for the course EE 302 taught by Professor Mccann during the Fall '06 term at University of Texas at Austin.
 Fall '06
 MCCANN
 Volt

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