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IBM 5170  -  Load Resistor


From the technical reference for the IBM 5170:
"If no fixed disk drive is connected to the power supply, the load resistor must be connected to P10.  The load resistor is a 5 ohm, 50 watt resistor."

5 ohm resistor on a 12V line will draw 2.4 amps from that line.  This greatly satifies the requirement (found in the 5170 technical reference) that the minimum loading of the +12V line of the 5170's power supply is 2.5 amps.

Below is pictured the load resistor (caged) that IBM supplied.


5170_dummy_load.jpg