IMSAI Score update/Spare BYTEs/Got an Altair too
Dave Dunfield
dave04a at dunfield.com
Sat Jun 4 17:40:37 CDT 2005
>Don't worry too much about ripple on an S100 supply. The S100 supply is
>not regulated -- the regulators are on each of the boards (the 8V input
>is designed to be regulated down to 5V, etc). The regulators should take
>care of small amounts of ripple on the backplane supply lines.
Agreed: Rich, what I ment when I told you to check for ripple, would be
"big" ripple, which would be an indication of the filter caps having
dried out - not all that likely, but worth checking. The input to the
regulators should not drop below 7v under load.
I always scope supplies under initial load tests - You never know what
odd things you might see...
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
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