Discussion in 'Homework Help' started by murlan, Mar 30, 2010.
Hey guys, help me find the current through R4. I don't know where to start or what to do.
I'd suggest using nodal analysis.
HINT: you need a supernode
Another approach would be to convert the left-hand part of the circuit comprising the V1 source and the resistors R1 & R2 to a Thevenin equivalent. The values appear to have been chosen with that in mind.
The subsequent analysis then becomes relatively straightforward.
You also avoid the supernode.
you can use loops currents theory to find r4 value
I just worked through it with superposition and confirmed with OrCAD. You have many choices for this problem.