Abstract: A high-altitude railroad locomotive adapted for more reliable operation at high altitudes, wherein the high-altitude railroad locomotive includes a semiconductor electric power control component, and wherein due to the high altitude the locomotive would be exposed to high levels of cosmic radiation tending to damage the semiconductor electric power control component is provided. The high-altitude locomotive includes electric power generation equipment, a plurality of traction motors mechanically connected to wheels supporting the high altitude locomotive and an electric power transmission system for transmitting electrical power from the electric power generation equipment to the plurality of traction motors.

Abstract: A burn-in tester that provides independent control of the devices under test. The various operating parameters such as temperature, voltage, frequency of operation or test pattern being applied can be independently changed on one device without affecting the operating parameters of the other devices. Thus, e.g., the amount of cooling applied to one device is independent of the amount of cooling applied to another device. In addition, the testing being done on each device may be independently controlled. Thus, a test can be changed on one of the devices under test without affecting the tests being run on any of the other devices. Similarly, the voltage and frequency of operation can be controlled independently to allow for changes to the voltage and/or frequency of one device without affecting those parameters on other devices being tested.