Consider the circuit of Figure P9.52 in which R1 = 4Ohm, R2 = 4Ohm, L = 5/12H, C

Question

Consider the circuit of Figure P9.52 in which R1 = 4Ohm, R2 = 4Ohm, L = 5/12H, C = 25 mF. Find the roots of the characteristic equation. CHECK: -8, -12 If Vin(t) = -20u(-t) V, find vC(0-), vC(0+), iL(0-), iL(0+), and vC(t) for t>0. Hint: After finding the initial voltages and currents, draw the equivalent circuit valid for t > 0. Check your answer for vC(t) using the "dsolve" command in MATLAB. Plot vC(t) for 0 t 2 sec using MATLAB or the equivalen. Be sure you properly label your plot. If vin(t) = -20u(-t) + 20u(t) V, find vC(t) for t> 0. If vin(t) = -20u(-t) + 20u(t) -20u(t-1)V, find and plot vC(t) for 0 t 2sec.

Explanation / Answer

it's always better to solve a problem of matlab on matlab itself rather than on paper. its comfortable to use various tools. try it on matlab by putting the charecteristcs equation on it. hope it helps

http://www.mathjax.org/help/configuration

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