FreeLists / si-list / [SI-LIST] Re: impedance and Characteristic impedanece

["Muranyi, Arpad" <arpad.muranyi@xxxxxxxxx>]

Zheng,

I hope you wouldn't mind, but I don't want to
give away the answer that quickly...  I want
to get people to think a little, see a few
more replies (if anyone cares), and if no one
gets it right in a day or so I will jump in
to the rescue.=20

Arpad
-----------------------------------------------

-----Original Message-----
From: Zhenggang Cheng [mailto:zcheng@xxxxxxxxxx]=20
Sent: Monday, April 09, 2007 4:34 PM
To: Muranyi, Arpad; si-list@xxxxxxxxxxxxx
Subject: RE: [SI-LIST] Re: impedance and Characteristic impedanece

Why is it infinte? Any formula ? Why it is not R=3DU/I=3DU/1*U=3D1?

And why this is related to impedance and characteristic impedance?

Sorry for asking so many whys. But I do want to know.

Thanks,

Zheng
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