Talk:Admittance parameters

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Wrong Y-equivalent?

It seems to me that figure 5 in the article is wrong and the correct form is:

Can someone check it please? Thanks. Dalba 19:11, 2 March 2014 (UTC)[reply]

That looks quite similar - except that you have labelled the shunt elements with their admittance, whereas Fig. 5 labels them with their impedance. Are there other important differences? --catslash (talk) 00:48, 3 March 2014 (UTC)[reply]

Not really, but this is the first time I see y11 is used to denote impedance (while at the same figure y21 is admittance?). Dalba 07:17, 3 March 2014 (UTC)[reply]

The picture above is better than that in the article because

An immitance is conventional labelled by either its impedance or admittance as appropriate, so taking the reciprocal is redundant and Y₁₁ and Y₂₂ are preferred here.
The shunt elements should be shown as general admittances/impedances rather than as resistors.
The currents I₁ and I₂ should be labelled.
The external voltage sources are not part of the thing described and so should not be shown.
Circuit diagrams should use vector graphics (e.g. .svg) rather than raster graphics (e.g. .png).

However neither the ground symbols nor the dotted ground connection are required, since the Y-matrix says nothing about these. Overall, File:Two-Port Y-parameters Norton equivalent.svg is the better. --catslash (talk) 21:00, 3 March 2014 (UTC)[reply]