[gta02-core] Values and units in schematics

Werner Almesberger werner at openmoko.org
Tue Jun 30 18:36:01 CEST 2009

Rene Harder wrote:
> Well, but we might have millihenry somewhere in the schematics and then
> we use M=Mega for resistors and M=milli for inductors?

We could just avoid "milli" and use 1200U for the 1.2 mH inductor.
For small resistances, since it's the low end, maybe 0R02 for
20 mOhm. Not pretty, but reasonably unambiguous.

> That will lead to inconsistency and confusion, although i believe that
> most people will know that 1M2 for an inductor actually means 1.2mH and
> not 1.2MH.

Or only in truck-mounted phones ;-)

> I would include units only where it's really necessary. 

Dave described this as a "one letter per value" rule. I like it.

- Werner

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