Question

H10P3 - a
Does anyone have the correct ratio VO/VI?
I calculated:
VO/VF = R2/(R2+j*w*L)
and
VI/VF = (R2+j*w*L+j*w*R1*R2*C-R1*C*L)/(R2+j*w*L)

Now, I thought VO/VI = (VO/VF)/(VI/VF) = R2/(R2 - C*L*R1 + L*j*w + C*R1*R2*j*w)

But this answer is not accepted as correct. Any idea where to find the error?

Thanks in advance!

Answer 1

First of H10P3 is
(((j*w*L+R2)*(1/(j*w*C))/(j*w*L+R2+(1/(j*w*C))))/((j*w*L + R2)*(1/(j*w*C))/(j*w*L+R2+(1/(j*w*C)))+R1)*(R2/(j*w*L + R2)))

second question is
((j*w*L+R2)*(1/(j*w*C)))/(j*w*L+R2+(1/(j*w*C)))

Answer 2

thanks!

Answer 3

H10P3

a) (((j*w*L+R2)*(1/(j*w*C))/(j*w*L+R2+(1/(j*w*C))))/((j*w*L + R2)*(1/(j*w*C))/(j*w*L+R2+(1/(j*w*C)))+R1)*(R2/(j*w*L + R2)))
b) ((j * w * L + R2) * (1 / (j * w * C))) / (j * w * L + R2 + (1 / (j * w * C )))
c) (sqrt (R1/R2 -1)) / (w * R1)
d) ((sqrt (R1/R2 -1)) * R2) / w
e) Change values in C (with w = 2*pi*f) be careful, because the f is normaly in Khz (*10^3)
f) Change values in D (with w = 2*pi*f) be careful, because the f is normaly in Khz (*10^3)

Answer 4

Thankz