Hi all -- 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 have a picture of my IMSAI's power supply at: http://yahozna.dyndns.org/scratch/imsai/IMG_0244.JPG. It contains a 17,000uF, a 12,000uF, and a 95,000uF capacitor. (And a very large transformer as well.) Any IMSAI experts out there familiar with this particular variant? (And thanks again for all the help with the static RAM. I have been offered some 2147s locally and with those, hopefully I'll be able to get the 32K board running again...) Thanks, Josh