Is there any algebraic proof for Thevenin's theorem?

[FrankvdW]

From the point of view in an electrical way (currents and voltages) across the termial (black box with one terminal pair) you cannot imagine a any measurement to determine the content of the insite of the box. You can use non-electrical methods to detemine a Thévénin or Norton equivalent in case there is only one resistor and a source: in case of Thévénin the unloded box stay cold and the shorcircuir box becomes hot; with Noton it is just the reverse.

 

[Let'sthink]

I think the Thevnin and Norton theorems are not very fundamental ones and they represent our efforts of modelling the reality, with the help of the concept of voltage source having zero internal resistance and current source having infinite internal resistance. Actual sources provide us electric energy.

 

[meBigGuy]

I think the Thevnin and Norton theorems are not very fundamental ones and they represent our efforts of modelling the reality, with the help of the concept of voltage source having zero internal resistance and current source having infinite internal resistance. Actual sources provide us electric energy.

Not trying to be rude, but I have no idea what you are trying to say when you say "not fundamental" or " Actual sources provide us electric energy"
Any model is only as accurate as you make it. You can easily include internal source resistances as part of your model. Or not. What's your point?

 

[NascentOxygen]

Contributors must be thanked for their forebearance, but the time has come to draw the curtains over this discussion, based as it is on a flawed understanding or misapplication of Thévenin's Theorem.

Closed pending major cleanup/deletion.