# T-N theorems

Discussion in 'General Electronics Chat' started by Fuse_Burner, Sep 11, 2014.

1. ### Fuse_Burner Thread Starter New Member

Dec 9, 2013
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How important are they? They seem to be pretty much invaluable, especially in a maintenance/repair setting, but are they really? The course I'm taking says that they teach them together because they feel it's easier, even though they are sometimes taught separate. But for some silly reason, I'm really having a mental block with mastering the concept.

How often do you actually use the T-N theorems in real life?

2. ### wayneh Expert

Sep 9, 2010
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What's a T-N theorem?

3. ### wmodavis Well-Known Member

Oct 23, 2010
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True-Not True???

4. ### Fuse_Burner Thread Starter New Member

Dec 9, 2013
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Thevenin and Norton, lovingly referred to as the T-N theorems in my study books.

I guess Thevenin and Norton aren't exactly popular guys

Last edited by a moderator: Sep 12, 2014
5. ### b1u3sf4n09 Member

May 23, 2014
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Node voltage analysis tends to work for me in most situations, but being familiar with Thevenin and Norton equivalent circuit analysis certainly doesn't hurt.

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6. ### wmodavis Well-Known Member

Oct 23, 2010
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Léon Charles Thévenin & Edward Lawry Norton were the names of individuals not T-N.

Guess we could just call you "F"

7. ### Fuse_Burner Thread Starter New Member

Dec 9, 2013
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I'm familiar with the who and the why, but thanks anyway.

8. ### vk6zgo Active Member

Jul 21, 2012
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Don't forget my old friend Millman!
I sometimes found things I battled with just fell apart easily with the application of Millman's Theorem.

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9. ### MrAl Distinguished Member

Jun 17, 2014
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Hi,

Thevenin and and Norton Theorems are duals of each other. They are important in electrical circuit analysis and should not be overlooked. They help to simplify networks by reducing the network to a much simpler form when a large part of the circuit is not interesting. This comes in handy when we want to study the effects of a complex circuit output on another circuit.

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10. ### profbuxton Member

Feb 21, 2014
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I usually use Murphys Law

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11. ### alfacliff Well-Known Member

Dec 13, 2013
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Norton used to make some real neat bikes.

12. ### Fuse_Burner Thread Starter New Member

Dec 9, 2013
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They briefly touch on this with a dedicated chapter, but Millman doesn't get the attention that Thevenin and Norton do, lol.

13. ### MrAl Distinguished Member

Jun 17, 2014
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Hi,

Thevie and his pen pal Nortie (he he) are more widely applicable which is a major consideration in the propagation of a theory.

14. ### vk6zgo Active Member

Jul 21, 2012
677
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And lousy antivirus programs!