Problem with nod voltage analysis se the picture

[TheNaturalStep]

Please watch the picture
http://img161.imageshack.us/img161/8170/problem1yf5.jpg [Broken]

I am very thankfull toward any help given :)

 

[berkeman]

I think it's just a math error. I agree with your equation for V2, but get a different result when I multiply it all out.

 

[TheNaturalStep]

I think it's just a math error. I agree with your equation for V2, but get a different result when I multiply it all out.

It should be 45 V; it is the thevenins voltage i am seeking ...

 

[TheNaturalStep]

Anyone? :(

 

[berkeman]

It should be 45 V; it is the thevenins voltage i am seeking ...

I have no idea what that means. In your figure, you say that you want to solve for V2. You then use the node voltage (KCL) method correctly to derive an equation for V2. The only problem is that you made a simple algebra/math error in solving for the value of V2. It is not 54V and it is not 45V. Just do the math at the end more carefully, and you'll get a correct value for V2.

 

[TheNaturalStep]

I have no idea what that means. In your figure, you say that you want to solve for V2. You then use the node voltage (KCL) method correctly to derive an equation for V2. The only problem is that you made a simple algebra/math error in solving for the value of V2. It is not 54V and it is not 45V. Just do the math at the end more carefully, and you'll get a correct value for V2.

I know it is V2 67,2 but i am seeking teh thevenins voltage, and shouldn't that be 67,2?

 

[TheNaturalStep]

Quite funny:
http://www.google.se/search?sourcei...GGL_svSE207SE207&q=nod+voltage+analysis+forum

Anyway! wtf guys, are there really none who can help ...

 

[TheNaturalStep]

You are my life line guys, but if you don't know it is ok i guess :( ...

I just so need that peace of information


About 45V that is the teacher answer ...

 

[TheNaturalStep]

Bump bump bump