Hi guys,
My first post on this forum, have been lurking for a while though. I'm currently stuck with a 3-loop circuit where I'd need to solve the current over 4-Ohm resistor using Thevenin's method.
Sorry for a horrible picture, only had paint available..
http://shan.daug.fi/randomstuff/thev.JPG
I've solved currents earlier with loop-method, got 2.965 A for the current that goes through the resistor. Got 11.86 Volts as Vth and 1.842 Ohms as Rin (Possibly wrong..). However I'm unsure where to go from here.. 11.86V / 2.965 A = 4 Ohms.. like inner resistance (Rin) wouldn't matter?
I thought that calculating current over the resistor was simply Vth/Rin + original resistance... In which case the current would be 2A (11.86 / 5.842)
I admit that I'm quite terrible using Thevenins. It's hard to find good examples of it, or maybe I was taught it differently than it's presented in most places.. I understand how it's useful but haven't fully grasped how to use it. Maybe source of the problem is that we were taught it by using circuits where it really wasn't needed (solvable otherwise)
Please help
My first post on this forum, have been lurking for a while though. I'm currently stuck with a 3-loop circuit where I'd need to solve the current over 4-Ohm resistor using Thevenin's method.
Sorry for a horrible picture, only had paint available..
http://shan.daug.fi/randomstuff/thev.JPG
I've solved currents earlier with loop-method, got 2.965 A for the current that goes through the resistor. Got 11.86 Volts as Vth and 1.842 Ohms as Rin (Possibly wrong..). However I'm unsure where to go from here.. 11.86V / 2.965 A = 4 Ohms.. like inner resistance (Rin) wouldn't matter?
I thought that calculating current over the resistor was simply Vth/Rin + original resistance... In which case the current would be 2A (11.86 / 5.842)
I admit that I'm quite terrible using Thevenins. It's hard to find good examples of it, or maybe I was taught it differently than it's presented in most places.. I understand how it's useful but haven't fully grasped how to use it. Maybe source of the problem is that we were taught it by using circuits where it really wasn't needed (solvable otherwise)
Please help