A 50-mF capacitor and a 100-mH inductor are connected in parallel with a closed switch as shown in Figure P6–17. The inductor has 25 mA flowing through it at t ¼ 0. The switch opens at t ¼ 0.

(a) Find the initial voltage across the capacitor at t ¼ 0.

(b) Write an equation for the voltage across the elements for t > 0. Do not solve it.

(c) Simulate the circuit using OrCAD. Connect an inductor in parallel with a capacitor and assign the appropriate initial conditions and run a transient analysis. Plot the voltage across the elements for at least 20 ms.

(d) Characterize the response signal.

Transcribed Image Text:

50 Fvc(t) iL(0)=25 mA t=0 FIGURE P6-17 100 mH