thevenin equivalent

Thread Starter

illidari

Joined Aug 26, 2011
3
I am really lost on how to solve this problem with the current sources in the picture.

I have found the thevenin resistance equivalent to be 571.43 ohms

I am stuck on finding the thevenin voltage.

Could someone explain this to me ? Possibly show me the first few steps?
I was told to turn the voltage into a current by dividing 5V/1kohms = .005A

I'm not sure what to do next.
 

Thread Starter

illidari

Joined Aug 26, 2011
3
I tried the node voltage method. I'm stuck on solving it. I attached the work I got done with it.

I'm still lost on how to move forward.
 

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Jony130

Joined Feb 17, 2009
5,162
We can write down the nodal equation directly form the diagram



I1 = Va/R4 + (Va - Vc)/R2

(Va - Vc)/R2 = Vc/R3 + (Vc - V1)/R1

Or we can use source transformation technique



And now we can find Vab voltage

Vab = V2 - I1*R4 = V2 - (( V2 - V1) / ( R4 + R2 + R1||R3 )*R4 ) =

= 2KV - (( 2KV - 5/3) / (1KΩ + 1KΩ + 1KΩ/3 ) *1KΩ ) =

= 2000V - 856.428571V = 1143.57143V
 
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