METHOD FOR OPERATING POWER UNIT

摘要

PROBLEM TO BE SOLVED: To control an output current of a power unit with high accuracy, by eliminating the adverse influence of the time until the voltage of a filter capacitor is established on the accuracy of a low current domain immediately after starting the power unit. SOLUTION: A power unit is provided with a filter capacitor 3 and a switch 6 for starting on its output side and supplies its output current which linearly rises immediately after the power unit is started by turning on the switch 6 to an inductive load. The power unit is started by turning on the switch 6 after a load voltage is established in advance across both ends of the filter capacitor 3 by charging the capacitor.