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So what is it used for? I know the steps to convert - like changing voltage source to current source, resistor to conductor etc. But why am I doing it? What is the use?

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- Thread starter Avichal
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- #1

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So what is it used for? I know the steps to convert - like changing voltage source to current source, resistor to conductor etc. But why am I doing it? What is the use?

- #2

davenn

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can you give a specific application of this "duality" you refer to please :)

Dave

- #3

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Are you referring to Thevenin and Norton's theorems?

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- #5

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I am also looking for its application :)can you give a specific application of this "duality" you refer to please :)

Dave

- #6

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Every one of those formulae are vitally important.

What exactly did you want to know?

- #7

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Well I encountered some questions where I have to convert circuit into its dual. So basically what I am asking is the use of converting a circuit into its dual.What exactly did you want to know?

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dlgoff

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Are you referring to Thevenin and Norton's theorems?

Well I encountered some questions where I have to convert circuit into its dual. So basically what I am asking is the use of converting a circuit into its dual.

I've never heard it called "duality" but he must mean, Thévenin's theorem and it's extension Norton's theorem.

- #9

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Have you looked at the link provided by the OP?

Yes Norton's and Thevenins theorems are duals of each other as are for instance wye - mesh transformations.

- #10

dlgoff

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Have you looked at the link provided by the OP?

Yes Norton's and Thevenins theorems are duals of each other as are for instance wye - mesh transformations.

I have now.

- #11

256bits

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Well I encountered some questions where I have to convert circuit into its dual. So basically what I am asking is the use of converting a circuit into its dual.

Nowadays, mainly to increase your understanding of system behavior, such as a parallel RC and and series RL circuit being duals of each other, where current and voltage will behave similarily from one to the other. Resitance -> conductance, inductance -> capacitance, parallel -> series, voltage source -> current source and vice-versa.

You might want to look up analog systems, where the behavior of a mechanical system can be modelled as an electrical system ( also valid for thermal, mechanical, electrical, fluid ).

The analog, dualog was used extensively many years ago since electrical systems could be more readily made from components and system behavior observed. Resisters, capacitors, inductors could easily exchanged to vary system behavior. Try that with not so readiy available components for a mechanical system. A mechanical system could be modelled as electrical and observed. Thevin and Norton could readily be applied.

The advent of the analog and then the digital computer has depreciated this type of analysis, but it is still interesting to know how systems relate to one another.

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