Now the Norton equivalent circuit is equivalent

to the Thevenin equivalent circuit.

The only difference is we've got a parallel combination here between

the current source and the Thevenin.

Now this i sub sc, we defined it in our previous lesson.

It is the short circuit current across these terminals right here,

that's i sub sc, and that is the source right here.

We also defined another way of finding it, and that was through Ohm's law.

So V Thevenin, and I sub sc are related to R Thevenin.

So, using all the techniques and methods that we found in our last lesson to

find V Thevenin, or R Thevenin, or i short circuit, we use here.

The only thing is we end up putting our circuits together looking like this,

rather than like that.