Outputs; Dc Output Protection; Output Voltage Sequencing - IBM AT 5170 Technical Reference

Outputs
The power supply provides +5, -5, + 12, and -12 Vdc. The
following figure shows the load current and regulation tolerance
for these voltages. The power supply also supplies either 115 Vac
r".,
or 230 Vac for the IBM Monochrome Display.
Nominal
Load Current (A) Regulation
Output
Min Max Tolerance
+5 Vdc 7.0
19.8
+5% to -4%
-5 Vdc 0.0
0.3
+10% to -8%
+12 Vdc 2.5
7.3
+5% to -4%
-12 Vdc 0.0
0.3
+10% to -9%
DC Load Requirements
DC Output Protection
If any output becomes overloaded, the power supply will switch
r"',
Off within 20 milliseconds. An overcurrent condition will not
damage the power supply.
Output Voltage Sequencing
Under normal conditions, the output voltage levels track within
300 milliseconds of each other when power is applied to, or
removed from the power supply, provided at least minimum
loading is present.
3-4 Power Supply