RE: Defender power supply requirements

From: James R. Twine <jtwine_at_jrtwine.com>
Date: Wed Feb 19 2003 - 19:39:38 EST

> From: owner-rasterlist@synthcom.com
>
> Don't forget that ether +5 or the +12 (I don't remember)
> needs to have a large cap to allow one of the voltage lines
> to come up slower during boot up, I believe this had to do
> with the memory backup, of course I be wrong;)

   IIRC, you are correct. The +5 needs to come up/on *after* the other
voltages are stable (mainly the +12). This prevents the CMOS from being
written to before the system gets into a sane state.

   I think that people have also used a Reset Circuit IC (a "MAX"
something or other, I believe...) successfully.

   Peace!

[Get Check Favorites 1.5 Now! http://checkfavs.jrtwine.com]
-=- James R. Twine, MCP, (jtwine@jrtwine.com)
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Received on Wed Feb 19 17:52:29 2003

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