ELECTRIC DISCHARGE LAMP LIGHTING DEVICE,申请号JP19910211087-传众专利搜索

ELECTRIC DISCHARGE LAMP LIGHTING DEVICE

申请公布号：JPH0554985(A)

申请号：JP19910211087

申请日期：1991.08.22

申请公布日期：1993.03.05

申请人：

IKEDA DENKI KK

发明人：NAKANO TERUHIKO

分类号：H05B41/24

主分类号：H05B41/24

摘要：PURPOSE:To permit a discharge lamp to be lighted up after preheating when the power is put on again by connecting a resetting circuit to the plus input terminal side of an IC circuit, and connecting a potential compensating diode to the minus input terminal side of the IC circuit. CONSTITUTION:When a power switch 33 is put on, a reference voltage of a magnitude corresponding to the partial voltage as determined by a resistance 15 and diode 44, is generated on the plus input terminal side of an IC circuit 14. On the minus terminal side of the IC circuit 14, at the same time, the potential rises as following a charging curve having a time constant determined by a resistance 17 and capacitor 21. When the potential exceeds potential on the plus input terminal side, the output of the IC circuit 14 emits a drive signal of high voltage from low voltage. This actuates a photo-coupler 30 to supply a gate voltage to a switching element 7, which is turned on to light up a discharge lamp 3. Thereby deterioration in the life of discharge lamp 3 is precluded.