Inputs; Outputs - IBM 5170 Technical Reference

The system's power supply is contained inside of the system unit
and provides power for the system board, the adapters, the
diskette drives, the fixed disk drives, the keyboard, and the IBM
Monochrome Display.
Inputs
The power supply can operate at a frequency of either 60
±
3 Hz
or 50 ±3 Hz and it can operate at 110 Vac, 5 A or 220/240 Vac,
2.5 A. The voltage is selected with the switch above the
power-cord plug at the rear of the power supply. The following
figure shows the input requirements.
Range Voltage (Vae) Current (Amperes)
Minimum 100 Maximum 5
115 Vae
Maximum 125
Minimum 200 Maximum 3.0
230Vac
Maximum 240
Input Requirements
Note: The maximum in-rush current is 100 A.
Outputs
The power supply provides +5, -5, +12, and -12 Vdc. The
following figure shows the load current and regulation tolerance
for the voltages.
Note: The power supply also supplies either 115 Vac or 230
Vac for the IBM Monochrome Display.
Power Supply 3-3