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dependent sources - Iowa State University

EE 201dependent sources 1 dependent sourcesAs we begin to use simple circuits to model more complex circuit behavior, we need to add some items to our tool sources behave just like independent voltage and current sources , except that the voltage or current depends in some way on another voltage or current in the seems a bit odd, but this behavior corresponds very closely to the way a number of interesting and useful electronic devices behave. We re not to try to get a detailed understanding of how these devices work internally that s the subject for an electronics or semiconductor class. However, we can form a reasonable model of how the electronic devices behaves in a circuit by using dependent 201dependent sources 2 + dependent voltage sourceVd = Av1 dependent current sourceId = i1 Here v1 and i1 are quantities defined somewhere else in the circuit , including the proper polarity or direction.

The circuit below uses a voltage-dependent voltage source to approximate the behavior of amplifier. The amplifier model consists of the resistors R 2 and R 3 and the dependent source. (We will study amplifiers in more detail soon.) In the circuit, find v R4. 0.1 V 1 k! 5 k! 100 ! 100 ! A = 100 Find an expression for v R4 using a voltage ...

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tuttle.merc.iastate.edu

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