# The validity of superposition theorem

#### kamir

Joined May 25, 2004
5
i have a problem in doing my circuit report.
The report ask me to give a comment in validity in superposition theorem
what should i write?

i have an answer given by me:
The validity of superpostion theorem only applies in a circuit whihc is series and parallel whereby we can separate them into a simple loop like shot-circuit the voltage source and open circuit in current source.And only 1 source is allow in a loop.

Actually,i think superposition=thevenin theorem+norton theorem
don u think so?
thevenin calculate voltage while norton calculate current

give some comment in validity in superposition and how about my answer

#### Dave

Joined Nov 17, 2003
6,970
Superposition Theorum states:

I/V solutions for cicuits with linear bilateral components can be obtained by superimposing the part solutions from individual sources.

I think you'll find that Superposition Theorum is just another circuit analysis theorum in addition to Thevenin and Norton's theorums and there direct connection is not as such applicable. I think the answer given to you is the most accurate.

#### keithu

Joined May 26, 2004
1
Kamir

I expect the answer they want is that the superposition theorem only applies to linear circuits. Are there any non-linear elements in your circuit?

#### Dave

Joined Nov 17, 2003
6,970
Originally posted by keithu@May 26 2004, 12:03 PM
Kamir

I expect the answer they want is that the superposition theorem only applies to linear circuits. Are there any non-linear elements in your circuit?
Yes, but also bilateral components, otherwise this would place certain restrictions on your application of the Superposition theorum.