rlc_problem4 - Sample Problem Topic RLC Circuits/Response...

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Unformatted text preview: Sample Problem Topic: RLC Circuits/Response Statement of Problem: Given the circuit shown in the figure below The energy stored in the 50nF capacitor is 90μJ. The initial energy of the inductor is 0. The roots of the characteristic equation that describes the natural behavior of the current I are -1000s-1 and -4000s-1 . a) Find the numerical values of R and L b) Find the numerical values of i(0) and di(0)/dt immediately after the switch has been closed. c) Find i(t) for t >= 0. d) How many microseconds after the switch closes does the current reach its maximum value? e) What is the maximum value of I in milliamperes? f) Find vL(t) for t >=0 Solution Without circuit component va lues, we can’t directly calculate the values ω and α. However, we do know the range of the roots of the characteristic equation. We then know a few things about the values mentioned previously. a) α = 2500 rad/s, with a deviation of 1500....
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This note was uploaded on 10/30/2011 for the course EE 215 taught by Professor Unknown during the Spring '05 term at University of Washington.

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rlc_problem4 - Sample Problem Topic RLC Circuits/Response...

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