Recent content by Daeol
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Determine current and voltage using Node Voltage method
[Mod note: Post moved to new thread, so template not included] Hello there again! I started working on the second problem but I think I am doing it wrong so I thought I would post the first step and do this one step at a time to see where the mistake was. So the task is to determine UR3 and...- Daeol
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- Current Method Node voltage Voltage
- Replies: 2
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
You are right. I did not specify any but in my calculations, it was just slightly different but I hope it does not matter as long as I got the method right. I have 3 more problems to solve with circuits, 2 of them which I have not been introduced to yet and one the professor already showed us...- Daeol
- Post #29
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
I would say series because that gives me the right result! At long last! Thank you so much for all your help and patience! : ) So, let's go over this one more time, After suppressing the source and removing R3, I have the picture you posted above. Calculating the current and Ut: The...- Daeol
- Post #27
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
They look linear to me but in that case, it does not fit with the star delta IR3 value. However, I don't even know what the right values are I think. Because from my star delta calculations, I got 122 for UR4 for example, but when using the method I described earlier with Thevenins theorem, I...- Daeol
- Post #25
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Hey there again! Sorry, forgot to draw the polarities, they are the exact opposite of the ones you added so I guess my equations should be correct then? Now to figure out the resistance. So do I need to calculate RA and RB separately because RB is not lying on the same line as the reference...- Daeol
- Post #23
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Hello there again qneill! Okay then, I will have to figure this out! : ) I must do this, it can't be that hard! Nope I do not need the total I of course, I use the two separate Is to determine the Us. I am glad I got that step right at least! The way I figured out the walk was that I placed...- Daeol
- Post #21
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Okay I am just about to give up. Today's class was even more disappointing and we didn' t do any of these circuits so I would like to ask you if you could provide me with a step by step solution (with pictures that have arrows symbolizing the Ut and Rt I am looking for if possible, I would be...- Daeol
- Post #19
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
I am afraid I have no idea what a reference node means or what it is supposed to do : / My intuition tells me that its the "ground" towards which the arrow was pointing in the pictures I posted and since the b terminal was there, it was easier to determine the potential. And what I...- Daeol
- Post #17
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Hey there qneill, please check out what I have posted just above your post. I really do not get the "You must calculate the Voc and Rth as for A and B ( separately )" part since I was presented with an equation that did both at once. Did I at least get any of the steps right?- Daeol
- Post #15
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Okay guys, I think I better show you the example I have been given, so you know what knowledge I am supposed to be using while solving this problem. http://postimg.org/image/fo6brj1kx/ http://postimg.org/image/x3wh42fk5/ http://postimg.org/image/4pdc7o4vb/ I' d say this one example is not...- Daeol
- Post #13
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Like this? http://s2.postimg.org/gohtw4evd/surpressed.png I do appreciate your picture you posted earlier but it rather confused me, especially since you added a second source which was not in the original circuit. I am trying to follow the instructions the professor showed us in the class...- Daeol
- Post #10
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Okay guys, I think I might be on the right track! So, to figure out Rt, instead of treating R1,R2 and R4,R5 like parallel, I do this: R14 = R1 + R4 R25 = R2 + R5 And with R3 removed, R14*R25/R14 + R25 should give me Rt. Then to figure out Ut, I calculate the current Ix = U/R14 + R25 and...- Daeol
- Post #8
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Hello there, I am afraid I am not really getting it : ( Could you please specify what was wrong with my method of simplifying the circuit? I was thinking, if I remove R3, I should then combine R1 and R2 and R4 and R5 like I have written above in order to get a linear circuit, I have no idea...- Daeol
- Post #5
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
Hello there and thank you very much for your reply! I am not quite sure what you mean by "that leaves 2R". Was combining the parallel resistors not a right step? And I am not sure which equivalents do you mean right now. Could you please elaborate? Should I combine R1 and R4? Thank you again!- Daeol
- Post #3
- Forum: Engineering and Comp Sci Homework Help
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Solve for I and U using Thevenin's Theorem
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...- Daeol
- Thread
- Theorem Thevenin's theorem
- Replies: 28
- Forum: Engineering and Comp Sci Homework Help