DURABILITY TEST APPARATUS

PROBLEM TO BE SOLVED: To execute an accurate durability test by always supplying a specified conduction current to an electronic controller. SOLUTION: The durability tester has a current sensor 1 which monitors currents being supplied to loads R1-Rn connected to an electronic controller Ob, thereby detecting failures of the loads R1-Rn during test. In repeatedly driving each load R1-Rn, when a failure is found, the driving of associated failed load is stopped and the next load is repeatedly driven, thereby always supplying a specified conduction current to the electronic controller Ob.