From: Douglas McKean (firstname.lastname@example.org)
Date: Wed Jan 05 2000 - 13:39:59 PST
At 02:17 PM 1/5/00 +0100, you wrote:
>Having been following this list for several years now, and coming up
>against plenty of signal integrity issues with my work along the way - I
>always find it interesting to see how many confused or even totally
>bogus, yet often quoted, design 'philosophies' there are floating about
>in this field -
>e.g. connect a decoupling cap directly to the power/gnd pins of a device
>to prevent noise currents from spreading onto the power planes rather
>than dropping vias directly to the plane.
>I would be interested to hear other people's favourite 'Screwy SI
>Concept' - why its screwy and why you think it has hung around in the
>literature confusing everybody.
>I'll put together a summary if enough people send me stuff.
< chuckle >
Screwy SI Concept #2: The 20H Rule
Why It's Screwy: Highly debatable concept and it's
not really an SI concept at all.
Why It's Hung Around: Easy to remember
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