SELF-EXCITED INVERTER CONTROL DEVICE, SELF-EXCITED INVERTER CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To solve a problem of possibility of erroneous operation caused by effect of noise as it is difficult to determine lamp-open of an inverter output in a self-excited inverter device in which a threshold current for determining the lamp-open is fixed.;SOLUTION: The self-excited inverter control device 100 includes a tube current detection circuit 5 for detecting a tube current flowing in an inverter output transformer, and a control part 6 for controlling fault detection of the tube current based on changes in duty of a dimming PWM pulse.;COPYRIGHT: (C)2011,JPO&INPIT