25 Mar
2004
25 Mar
'04
3:08 a.m.
>>>> "Brad" == Brad Parker
<brad(a)heeltoe.com> writes:
Brad> I also "tuned" the 785 supply - it was lagging around 13v. I
Brad> assume cranking it up to 15 is the right thing to do.
As a rule of thumb, DC power should be within 5% of the nominal value.
As a DEC reality, DC power should be not less than the nominal value,
nor more than 5% above. In other words, -0%, +5%. I learned that
from field service when they were troubleshooting a
cranky DMC11. The
cause was that the power (+5V in that case, I believe) was about
3%
below nominal, and the device wouldn't work reliably then.
paul