Vac Output; Overvoltage/Overcurrent Protection; Primary (Input); Secondary (Output) - IBM 5150 Technical Reference

Vac Output
The power supply provides a filtered, fused, ac output that is
switched on and off with the main power switch. The maximum
current available at this output is 0.75 A. The receptacle
provided at the rear of the power supply for this ac output is a
nonstandard connector designed to be used only for the IBM
Monochrome Display.
Overvoltage/Overcurrent Protection
The system power supply employs the protection features which
are described below.
Primary (Input)
The following table describes the primary (input voltage)
protection for the system-unit power supply.
Voltage (Nominal Vac) Type Protection
Rating (Amps)
120 Fuse 2
220/240
Fuse
1
Secondary (OUtput)
On overvoltage, the power supply is designed to shut down all
outputs when either the
+
5 V dc or the
+
12 V dc output exceeds
200% of its maximum rated voltage. On overcurrent, the supply
will turn off if any output exceeds 130% of its nominal value.
Power Supply 3-5