Chapter 4.Power Supply; Power Input; Power Output - IBM NetVista X40 Technical Information Manual

Chapter 4. Power supply

Power input

Power output

© Copyright IBM Corp. 2000
A 110-watt power supply drives your computer. The power supply converts the ac
input voltage into four dc output voltages and provides power for the following:
• System board
• Adapters
• Internal drives
• Keyboard and auxiliary devices
• USB devices
The following table shows the power input specifications. The power supply has a
manual switch to select the correct input voltage.
Table 8. Power input requirements
Specification
Input voltage, low range
Input voltage, high range
Input frequency
The power supply provides 3.3-volt power for the Pentium III microprocessor, core
chip set, and 5-volt power for PCI adapters. Also included is an auxiliary 5-volt (AUX
5) power supply to provide power to power-management circuitry and a Wake on
LAN adapter.
A logic signal on the power connector controls the power supply; the front panel
switch is not directly connected to the power supply.
The power supply connects to the system board with a 2 x 10 pin connector.
The following figures show the power supply output of all the connectors, including
the system board, DASD, PCI, and auxiliary outputs.
Table 9. Power output (110 watts)
Output voltage
+5 V dc
+12 V dc
-12 V dc
+3.3 V dc
Measurements
100 (min) to 127 (max) V ac
200 (min) to 240 (max) V ac
50 Hz ± 3 Hz or 60 Hz ± 3 Hz
Tolerance Minimum current
+5% to -5% 1.5 A
+5% to -5% 0.3 A
+10% to -10% 0.0 A
+5% to -5% 0.0 A
Maximum current
10.0 A
2.0 A
0.12 A
6.0 A
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