Network theorems in Electronics ?

[vead]

Hello
I know electronics circuits made from both active and passive component.
passive component such as resistor,capacitor,inductor
Active component such as diode , transistor
Example :Nortan, thevenin theorem
Network theorem is use to find resistance , current and voltage

I am confused When I look example for circuit theory I saw only passive components. all circuit made from passive component. but I think every circuit make from both active and passive component

I want to know where we apply network theorems , practically where we use network theorems? I mean In industry , in computer hardware, in telecommunication field

 

[(*steve*)]

You use them whenever you have a problem which they can solve and for which there is not a simpler method.

 

[vead]

You use them whenever you have a problem which they can solve and for which there is not a simpler method.

There are many circuits, processor , transmitter, filter In which type of circuit we use circuit theorems
can you please tell me practical example ?

 

[Laplace]

Network theorems are the foundation of linear circuit theory. Linear circuits comprise R-L-C passive components and active devices having linear models including voltage and current sources. Circuits with non-linear devices such as diodes still obey the voltage and current laws, and can with difficulty be analyzed using linear circuit theory because any non-linear device can usually be treated as piecewise linear over small intervals. I would think that using a circuit simulator is the preferred method for doing piecewise linear analysis of non-linear circuits.