Inputs - IBM AT 5170 Technical Reference

The system 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 Ito 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 Vo Itage (Vac)
Current (Amperes)
Minimum 100
115 Vac Maximum 5
Maximum 125
Minimum 200
230 Vac Maximum 3.0
Maximum 240
Input Requirements
Note: The maximum in-rush current is toO A.
Power Supply 3-3