What is Source transformation: Definition and 24 Discussions

Source transformation is the process of simplifying a circuit solution, especially with mixed sources, by transforming voltage sources into current sources, and vice versa, using Thévenin's theorem and Norton's theorem respectively.

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  1. jisbon

    Circuit Analysis - Source Transformation

    My work seems to be wrong somehow since my answer is wrong, and I need your help to find out which part is going wrong for me :/ My work: 1. 2. 3. 4. 5. 6. (10/7)/(10/7+7) = 0.7627A, which is not the answer. May I consult where is the problem in solution? THanks
  2. Castello

    Thevenin equivalent by source transformation

    Homework Statement Find the Thevenin equivalent at terminals a-b V1 = 70V V2 (dependent) = 4Vo R1 = 10Kohm R2 = 20Kohm Homework Equations ##V=RI## ##1/req = 1/r1 + 1/r2 + ... +1/rn## The Attempt at a Solution Found the current i = 1mA by KVL using Vo = 10ki then did source...
  3. W

    Problem involving Source Transformation and Nodal Analysis

    Homework Statement Homework EquationsThe Attempt at a Solution I have attempted and completed all questions. However, I am now trying part (b) with transforming the voltage source into a current source. I am unable to work out the current and I am unsure what to do next. I have included my...
  4. G

    What happens to the node after a source transformation?

    I have one circuit and another with a source transformation figure a and b respectively. My question after transforming the 30 mA source shouldn't the current going into node 5 equal the current going into node 4? Figura a. Before the transformation of the source Figure b. After the...
  5. A

    Source transformation, current & voltage sources

    < Mentor Note -- thread moved to HH from the technical physics forums, so no HH Template is shown > Hi, I was working on a the source transformation and i got to the part where there are two current sources in the circuit. The current sources were added together (giving they were going in the...
  6. T

    When can I use source transformation?

    Homework Statement I'm asking this question because I was trying to apply the method to a Thevenin Eq problem and the answer came out wrong. Also one more related question. According to the textbook, when a current source is connected both in series with a resistor and in parallel with...
  7. T

    Electrical circuit Source transformation Question

    I'm extreeeeamly rusty at basic circuit theory. I want to transform a sort of infinite arrangement of this circuit: The values themselves aren't important, just the representation of what's happening, all the verticle resistors are the same value as each other, and all the horizontal resistors...
  8. D

    How does a current source work in Norton's Therom

    Hi.i know that a ideal current source has infinite resistance and it supply's constant current to aload connected across it. The current source doesn't have the infinite resistance in series to it but in pparalle. All is well until I think of this Norton's Therom. When we transform a voltage...
  9. D

    Is there a problem with this Source Transformation?

    Hey guys, i did this source transformation as an alternate method to find the transfer function of a circuit, however I am getting a different transfer function of 2/(2s+(s+3)(s^2+1)) to the solution in the following image. Any help would be really appreciated :)
  10. C

    Few Questions on source tranformation

    It's question 1b) Please view attached 1. Just to clarify, when different voltage sources are in series you pick the smaller one? 2. First step, they turned the 1A and 2ohm into 2V, why does the resistance disappear? Then between the last two steps the 12/7 ohm resistance remains with 18/7...
  11. 4

    Source Transformation to find i_x

    Homework Statement I'm to use source transformation to find the current through the 24 Ohm resistor 2. The attempt at a solution I used source transformation on the left 12V source and got a .5A current upwards. The 24 and 30 ohm resistor are in parallel so I found an equivalent resistance of...
  12. dwn

    Solve Source Transformation Homework: V=3.35V, R=228.19kΩ

    Homework Statement Image Attached Homework Equations Ohm's The Attempt at a Solution Combined the two resistors in series : 250 + 550 = 800 kΩ Source Transformation (Current Source): V = 140,000(2*10^-6)= 0.28 V Combine the voltage sources : 6 - 0.28 = 5.72 V But then I...
  13. gfd43tg

    Resistance reduction and source transformation to find voltage

    Homework Statement Use resistance reduction and source transformation to find Vx in the circuit below. All resistance values are in ohms. Homework Equations The Attempt at a Solution For this problem, I know I can combine the 16 Ω resistors, but where I'm having a little trouble...
  14. M

    Why Short the 4kΩ Resistor in Source Transformation?

    Homework Statement I am a bit confused on why they can just randomly short the 4kΩ resistor, as you can see from the first pic to the second pic. THanks Homework Equations The Attempt at a Solution
  15. C

    Engineering AC Circuit with Source Transformation; find Thevenin equivalent

    Homework Statement Use source transformation to find the Thevenin equivalent circuit with respect to terminals, a, b. Homework Equations Voltage Division: (V in)*(R1/R1+R2) Thevenin / Norton / source transformation procedures RTh = RNo VTh = INo*RNo Polar...
  16. C

    Use source transformation, find Vo

    Homework Statement http://imageshack.us/a/img26/8403/homeworkprobsg28.jpg a. Use source transformations to find the voltage V0 in the circuit (green). b. Find the power developed by the 250V voltage source c. Find the power developed by the 8A current sourceHomework Equations V = IR KVL...
  17. T

    Norton Equivalent and Source Transformation problem

    Homework Statement Basically, I'm having trouble doing the source transformation and subsequently finding the norton equivalent for this circuit and I don't really know where to start. The circuit is attached where: i=3A V=90V Please help!
  18. S

    Using source transformation for dependent sources

    Hi all , is it possible to use the source transformation for dependent source ..? i guess yes because i came across a problem which asks to use source transformation to find Vx as shown : http://img571.imageshack.us/img571/2389/50111057.jpg and my solution was ...
  19. T

    Engineering Circuit Analysis - Source Transformation

    Homework Statement Find Vx using source transformation Homework Equations V=IR KVL The Attempt at a Solution After doing source transformation on the three pairs of current sources and resistors... KVL: -6+2I-Vx+4I-3+3I+5I-2=0 14I-Vx-11=0 but Vx=5I (is it? I'm not so sure about this)...
  20. F

    Source transformation, find the error

    Homework Statement http://img5.imageshack.us/img5/2959/question2e.jpg Homework Equations - A current source in parallel with a resistor can be transformed into a voltage source in series with a resistor. R stays the same and Vs = R*Is The Attempt at a Solution I have tried it in two ways. Both...
  21. M

    Source Transformation Question

    Homework Statement [PLAIN]http://img706.imageshack.us/img706/5328/prob31.jpg Homework Equations v = r * i The Attempt at a Solution Having issues with the left box I think. I have been starting on the right side and working left by first starting with the 5A current source...
  22. A

    Understand source transformation

    I'm trying to understand source transformation and with my research, I have had some confusion. I have two question regarding them and would appreciate any help. I understand that the thevenin resistance is found by short circuiting the voltage source. Is that also the case when you short...
  23. V

    CIRCUIT ANALYSIS: Use source transformation to find the Voltage Vo

    Homework Statement Use source transformation to find the voltage V_x in the circuit below. http://img207.imageshack.us/img207/5150/chapter4problem24ij9.jpg Homework Equations V_S\,=\,i_S\,R i_S\,=\,\frac{V_S}{R} KCL, KVL, v = i R, super-node? The Attempt at a Solution...