Discussion in 'Wireless & RF Design' started by perilbrain, Jun 12, 2010.

1. ### perilbrain Thread Starter New Member

Jun 12, 2010
4
0
for the past 3 yrs I have been trying to know y we use complex even though those imaginary sections could have been denoted by vectors.
such as for an LR circuit with voltage V,
I=V / (R i + X j) ...eq1 ..{i & j are vectors & V is also in vector}
as the above was capable of working same as the later...
eq1=> V= IR i + IX j
eq2=> V= IR + j IX
in the same way for two || LR circuits with V.
I1 = V/ R1 i + X1 j & I2=V/R2 i +X2 j ;
I1 = V . (R1 i + X1 j) / {(R1 i + X1 j). (R1 i + X1 j)
= VR1 i + VX1 j / [{√( R1^2+ X1^2)}^2]
= {V/(√( R1^2 + X1^2))}.(sinψ i + cosψ j)
= I(sinψ i + cosψ j) where ψ = tan^(-1){R/X}
transforming the above into complex notation the same will be
= I e^(-jψ)
However when we proceed ahead we get a few anomalies ....
can any one explain all these mess to me????

Last edited: Jun 13, 2010
2. ### studiot AAC Fanatic!

Nov 9, 2007
5,005
515
What exactly do you mean?

3. ### perilbrain Thread Starter New Member

Jun 12, 2010
4
0
i cnt understand wat u r asking

4. ### studiot AAC Fanatic!

Nov 9, 2007
5,005
515
We use polite English on this site.

I didn't see a single Jacobian in your examples.
Please show an example of where a Jacobian is used in place of a vector.

5. ### perilbrain Thread Starter New Member

Jun 12, 2010
4
0
i have fixed it......