Delightful Circuit Analysis Paradox

Nov 10, 2004 6 Replies
S

I came across this rather excellent problem in circuit analysis puzzles the other day and to be quite honest it had me scratching my head for quite a while! It may seem rather trivial at first but when you look closely at it it really is quite the teaser. :)


  1. Apply the "node analysis" method to determine the voltages at all the nodes of the accompanying circuit.


Note: I HAD to put it on this website because it's impossible to draw in ascii. This is NOT usenet filth, and it is just a geocities site.



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Please, please PLEASE help me!!!


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L

It is an easy problem. Go buy a Schalms outline at the bookstore.

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M

Is it easier to draw the problem, scan it in, post it on a newsgroup and wait for someone to respond than it is for you to simply do the problem?

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"

Just figure out what all the currents are per node, and then what all the voltages are per loop. (it really is EZ)

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D

What is excellent about it? It is not a puzzler. Convert the voltage source to a current source and you have a 3 node (+common) problem - You have this problem for a purpose.

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R

in article z5Ckd.184223$%k.138100@pd7tw2no, Don Kelly at snipped-for-privacy@peeshaw.ca wrote on 11/10/04 8:43 PM:

What is excellent about it? It is not a puzzler. Convert the voltage source to a current source and you have a 3 node (+common) problem - You have this problem for a purpose.

An additional suggestion is to make a star-delta (or tee-pi if you prefer) transformation of the 20, 20, 18 ohm combination.

Bill

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