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From: Chris Hills
Subject: Re: what is 100R mean in a schematics?
Date: Fri, 20 Dec 2002 18:15:31 +0000
Organization: Phaedrus Systems
NNTP-Posting-Date: Fri, 20 Dec 2002 18:18:53 +0000 (UTC)
X-Newsreader: Turnpike Integrated Version 5.01 M <7y9ouFdz6gbBVVTek6rkWKl0do>
In article <3E0308ED.9924449A@yahoo.com>, CBFalconer
>Chris Hills wrote:
>> Zefram Cochrane writes
>> >"RP Henry" wrote in message
>> >> In schematics from European vendors I have seen things like
>> >> 4k7 meaning 4.7 kohms, for instance.
>> > I've seen this for at least 40 years. Where are you, and if
>> > this mode of presentation is unfamiliar to you, when did you
>> > first see it ?
>> > It's second nature to me to automatically read e.g 2u2 as a
>> > 2.2 microfarad capacitor. I had no idea this was euro-centric.
>> I have noticed that the US seems to regard it's own standards
>> as "Standards" and any non US (usually ISO) standards as an
>> I once asked a US Engineer to supply documentation on A4 and
>> he refused to be forced into a "European standard" and was only
>> going to use the "Standard" Letter size that "everyone" uses!
>You may have run into an unusualy insular one.
Actually a senior engineer at TI.... The distribution was to four sites
on three continents. Only the one US site insisted on "letter" for both
papers and electronic documents.
> Most would quietly
>explain that it is not very easy to find A4 paper here.
Why? That is the point. The US does not take to international standards
>After all, we DID cater to 220 V. mains, and even to 50 hz. How
>much do you want, after all :-). Next thing you know you guys'll
>be expecting metric threads from here! Don't you realize that US
>fine, coarse, and Whitworth is all you'll ever need :-)
I recently took apart an old PC (286 I think) and was surprised at the
lage number of different types of screws and bolts that were used. I now
tends to be three lengths of one type two of another and some self
\/\/\/\/\ Chris Hills Staffs England /\/\/\/\/\
/\/\/ firstname.lastname@example.org www.phaedsys.org \/\/
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