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




More information about the cctalk mailing list