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IBM 5150  -  Circuit diagram for IBM 63W power supply unit (PSU)

		WARNING: Opening the 5150's PSU may expose you to hazardous voltages and currents. Do not assume that those hazards will disappear shortly after disconnecting the PSU from AC mains (house) power. Before opening the power supply, adequately educate yourself as to the hazards. Some hazard examples at here.

Note that in the supply lifetime of the IBM 5150, there were variations of the PSU.  Some known differences follow:
• 120V AC versus 220V AC
• AC powered fan versus DC powered fan

There may be many more differences.

IBM did not provide circuit diagrams of the PSU in the 5150 manuals.  Accordingly, circuit diagrams are hard to come by.


DIAGRAM #1:  Click on this link for a circuit diagram of a particular variation.   (The one in a SAMS Computerfacts document)

DIAGRAM #2:  Click on this link for the circuit diagram of another variation.     (220V AC)  (Glesham Lion PLC type 32075, also labelled 8529342)