Recent content by Effy

Got it. Thanks!

I got the same answers and finally found out what I did wrong. Thank you so much! But only the +1.27 is a valid frequency, right?

I've done that several times and I'm still try Does it mean that I shouldn't multiply the maximum magnitude by 1/sqrt(2) but subtract 3dB?

Btw, the original question is a damper-spring-mass system. I got the transfer function from that and I'm pretty sure it's correct.

Hi, I wrote the transfer function H(s) into H(w)=1/(-w^2+iw+1) so the magnitude would be |H(w)|=|1/(-w^2+iw+1)|=1/sqrt(1-w^2+w^4) |H(w)|max would be sqrt(4/3) when 1-w^2+w^4 is at minimum when w=+ or -1/sqrt(2) set |H(w)|=1/sqrt(1-w^2+w^4)=1/sqrt(2)*|H(w)|max=sqrt(2/3) and solve for w since...

Homework Statement transfer function: H(s) = 1/(s^2+s+1). question: compute half-power frequency Homework Equations none The Attempt at a Solution [/B]I got 4 answers: -0.605i, 0.065i, -1.169, 1.169 I know that only two of these are correct, one is 1.169 instead of -1.169 because frequency...