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POWER SUPPLY APPARATUS, DISCHARGE LAMP LIGHTING DEVICE AND ILLUMINATION DEVICE
申请公布号：JPH09261968(A)
申请号：JP19960070437
申请日期：1996.03.26
申请公布日期：1997.10.03
发明人：MITA KAZUTOSHI;URATANI KAZUYUKI;KITAMURA NORIYUKI
分类号：H05B41/24;H02J9/02;H02M7/06;H02M7/12;H02M7/48;H02M7/537;H02M7/5383;H02M7/5387
主分类号：H05B41/24
摘要：PROBLEM TO BE SOLVED: To re-start an inverter quickly by generating a re-start trigger signal even if the oscillation is suddenly discontinued by the abnormal state of a power supply. SOLUTION: In a power supply apparatus consisting of a bridge-type inverter which has the function of reducing the distortion of a power supply input current, a 1st starter circuit which, at the time of start, turns on a 2nd switching device 4 to start the switching opeartions of the 1st and 2nd switching devices 3 and 4 is provided and, on the other hand, a 2nd stater circuit which turns on the 1st switching device 3 to dicharge the charge of a 1st capacitor C1 when the oscillation of the inverter is discontinued while the 1st capacitor C1 is charged is also provided. With this constitution, even if the oscillation of the inverter is suddenly discontinued by an abnormal state, the 2nd stater circuit operates first to discharge the charge of the 1st capacitor C1 quickly and, as a result, the 1st starter circuit starts operation to supply a re-start trigger signal instantaneously to the 2nd switching device 4.