- #1
Daeol
- 15
- 0
Homework Statement
Hello guys!
I am getting really desperate here and I'd be very glad for any help.
I have the following circuit with 5 resistors :(excuse the drawings, I am in a hurry, I hope they are sufficient)http://s11.postimg.org/8mmd2pa2b/original.png
And I am supposed to solve for IR3 and UR3.
Homework Equations
The Attempt at a Solution
So my guess was to first transform it into a linear circuit so I put R1 R2 and R4 and R5 together:
R12 = R1*R2/R1 + R2
R45 = R4*R5/R4 + R5
So the circuit would be now simplified like this and I could apply the theorem:
http://s7.postimg.org/57r3m1b1n/step2.png
And now I removed R3, and solved for Rt = R12*R45/R12 + R45
Then I figured out the current Ix*R12 + Ix*R45 = U
Ix = U/R12 + R45
And then the Ut = U - IxR12
When I put it all together like this to figure out IR3:
IR3 = Ut/Rt + R3
I am not getting the right value so I must be doing something wrong.
I solved the circuit using the Star Delta transformation and I got all the right values.
I am not posting any numbers because I want to solve this myself, I just need someone to point me in the right direction.
I am a beginner and I would be extremely glad for any help I can get.
Thank you and have a great day!