Recent content by i_am_stupid

Hi, I'm trying to figure out why the output voltage waveform of this circuit would not include a DC offset of E. My understanding is that D1 becomes forward biased when Vs > E, and so that is when it should conduct. Every waveform drawing I've seen, on the other hand, begins conduction at 0...

Nevermind, got it.

Homework Statement A system is characterized by the equation y' + 3y = r' . When the input is r(t) = u(t) - u(t-1), find y(t) by taking the inverse Laplace transform of Y(s).Homework Equations The Laplace transform integral The Laplace transform of a derivative sF(s) - f(0) The transfer...

Homework Statement (old exam question attached) Homework Equations Complex power: S = VI* / 2 = P + jQ where P is the average power and Q is the reactive power Magnitude of complex power |S| = Vmax*Imax/2 V = ZI The Attempt at a Solution We can calculate θv - θi for each load by using...

Yeah, I'm not sure what the point of including that was. The problem statement I posted originally is exactly the same as given - furthermore, this is an old exam question, so I doubt it's a mistake. I guess the main problem here is figuring out what the switch changes (though I've even put it...

Well, eventually it would end up being 12, but I was thinking that the rate at which it would reach 12 would change given an initial charge.

Wouldn't it just mean that they start at 0V?

Homework Statement For the below circuit, the switch was open for a long time. Find the current Ia(t) for t>0. All capacitors are initially uncharged.Homework Equations Complete response of a capacitor: v(t) = Voc + (v(0) - Voc)e^(-t/τ) Combining parallel capacitors: summation Current through a...