DRIVER OF MOTOR FOR TRANSPORT

摘要

PURPOSE:To provide a driver of a motor for transport whose safety is improved to prevent.the driver from being damaged easily when an overcurrent flows. CONSTITUTION:A current detection part Rx for detecting current flowing to a switching element Q1 connected to the primary side of a high-frequency transformer 2 and a level judgment part (a second comparator) for terminating the ON time of the switching element when the detection signal of a current detection part reaches a specific value is added to a control means 8 for controlling the ON time width of the switching element according to the detection signal of a speed detection part 5 for detecting the drive speed of a motor 4 for transport 4.