Recent content by asdf12312

Homework Statement Find consensus (redundant) terms for the minimal SOP solution for the following function (inputs A,B,C,D and output F): Σm(1,3,4,5,7,10,11,12,14,15) Homework Equations n/a The Attempt at a Solution I find the minimal SOP solution is F=A'D + AC + BC'D' Then it seems like...

Homework Statement Homework Equations H(z) = Y(z)/X(z) The Attempt at a Solution I realized this wasn't in partial fraction form because the 1+z-1+0.5z-2 has non-real roots. I multiplied the 1st fraction part by z1 and the 2nd fraction by z2, then I combined them into one fraction and I...

Homework Statement Consider a feedback amplifier for which the open loop gain A(s) is given by: A(s) = X/ [(1+s/Y)*(1+s/Z)2] |s=jω Where X = 7500, Y = 90000, and Z = 800000 a) If the feedback factor is independent of frequency, find the frequency at which the phase shift is 180°. b) Find the...

yeah, I guess i didn't word it correctly. what it reads exactly is 'given a sequence x[n] with Fourier transform Xejw, determine the Fourier transform of the sequences in terms of Xejw.

Homework Statement Given x[n] with transform X(ejw), find the Fourier transform in terms of X(ejw). x1[n]=[0.9ncos(0.6*pi*n)] * x[n-2] Homework Equations time shift: x[n-k] -> e-jwkX(ejw) convolution: x[n] * h[n] -> X(w)H(w) freq. shift: x[n]ejwcn -> X(ew-wc) The Attempt at a Solution I...

Homework Statement A DT system is defined by the input-output relationship y[n] = x[n] ∗ h[n], where x[n] is input, y[n] is output, '*' is convolution, and h[n] = u[n+1]. Is this an LTI system? Explain. Homework Equations x[n] - input, h[n] - impulse response y[n]=h[n]*x[n] = Σ (k=-inf to inf)...

Homework Statement Homework Equations lambda= 2*pi / k Ei(z), Ei_perpendicular (z), Ei_parallel(z) eq. epsilon_r1=1, epsilon_r2=2.25 eta_1=120*pi, eta_2=80*piThe Attempt at a Solution I having trouble understanding some parts of this problem. i get k1=3.61, k2=5.42 and for d)...

I get B(t)=u*N*I0*sin(wt)/L, but I was wondering if this is wrong because it should be Bz. also I think it meant E(t) because we need to plot it against t.

Should I just use the solenoid equations? Bz=u*I/(2*pi*r) but since I has time dependence too, would I use just I am (magnitude) instead of the cos(wt)? I guess I would convert Bz then to Et but it would be without the the z in equation.

I guess I'm just confused how to find Bz and Et. I think I=I1m*cos(wt) but how do i find the E and B field from this?

Homework Statement In the picture in the figure, three coils are tightly wrapped around a non-magnetic cylinder of diameter Dcyl. Each coil is defined through the diameter of each wire comprising the coil, dcoil1-dcoil3, the current going through each coil, I1-I3, and the number of turns in...

I guess I'm confused because I don't understand how diameters matter in finding the B field. Also does the Bz = (u0*N*I)/L equation apply to whole cylinder or to each wire/coil too? For part 1) I get if all coils are identical, the B field through each is same so total B field is Bz=B1+B2+B3 or...

Homework Statement In the picture in the figure, three coils are tightly wrapped around a non-magnetic cylinder of diameter Dcyl. Each coil is defined through the diameter of each wire comprising the coil, dcoil1-dcoil3, the current going through each coil, I1-I3, and the number of turns in...

oh yeah, I didn't think of that. V(x) = 2*sin(0.2*pi*x), so I guess I take the derivative of this to find E field? dV/dx = 2*0.2*pi*cos(0.2*pi*x), and at x=5, E=-dV/dx=1.26?

Homework Statement Homework Equations E = -dV/dx ?The Attempt at a Solution not really sure how to do this problem. I think I understand E field is negative of slope of V/x, but I'm getting it wrong. just looking at it, I see V=-2 at x=7.5. so the E field to right of x= 5 is y2-y1/x2-x1=...