16 Aug
2010
16 Aug
'10
5:34 a.m.
On 15 Aug 2010 at 17:58, Josh Dersch wrote:
So the recent discussion of static RAM and the power
consumption
thereof has lead me to figure out what the approximate rating for my
IMSAI's power supply is, before I inadvertently overload it. I have
an IMSAI manual that describes the PS-28U as having a rating of 28A on
the 7V supply, and 4.5 on the +/-13.5V supplies. Unfortunately, the
PS-28U does not appear to be the supply I have fitted in my IMSAI,
based on the component descriptions, schematics, and pictures in the
manual. I'm unable to find schematics or a manual for any other IMSAI
8080 power supply other than the PS-28U.
I think you misunderstand. I was referring to the on-board regulator
for the RAM card--but with 8 chips, you might need 100-200 mA more.
You're probably okay, unless your regulator is on the hairy edge of
failure.
--Chuck