IBM 5155 PSU - Power Rating of Each Line


IBM's technical reference for the IBM 5155 specifies the maximum amperage that is to be drawn from each line.


  5155 PSU
Specified
maximum
AMPS
5155 PSU
Calculated
maximum
WATTS
     Comment
+5 V 11.2 A 56 W  56 Watts is the most to be drawn from the +5 V line
- 5 V 0.3 A 1.5 W  1.5 Watts is the most to be drawn from the -5 V line
+12 V display 1.5 A 18 W  Dedicated line for built-in CRT display unit (via connector P12 on PSU)
+12 V other 2.9 A 35 W  +12V consumption other than built-in CRT display unit
-12 V 0.25 A 3 W  3 Watts is the most to be drawn from the -12 V line
    ≈ 114 W