发明名称 |
POWER SUPPLY, DISCHARGE LAMP LIGHTING UNIT, AND LIGHTING FIXTURE |
摘要 |
PURPOSE:To suppress voltage rise under light load by conducting current through an inductor even during voltage supply interval from a DC auxiliary power supply to a high frequency converter thereby suppressing distortion in the input current waveform. CONSTITUTION:During trough interval of output voltage from a rectifier 100 where the instantaneous value is lower than a predetermined level, voltage is fed mainly from an auxiliary DC power supply 6 to an inverter 1. Upon turn ON of a switching device 3, current flows from the rectifier 100 through an inductor (L) 12-a diode (D) 13-the device 3 and energy is stored in the L12. Upon turn OFF of the device 3, power stored in the L12 is discharged through a route of L12-a parallel resonance circuit 2-a low capacity capacitor (C)-the rectifier 100-L12 and the C14 is charged. The C14 is discharged to the inverter 1 upon next turn ON of the device 3 and a C7 is charged via the route of C7-L8-D10-the device 3. |
申请公布号 |
JPH066979(A) |
申请公布日期 |
1994.01.14 |
申请号 |
JP19920261666 |
申请日期 |
1992.09.30 |
申请人 |
TOSHIBA LIGHTING & TECHNOL CORP |
发明人 |
KAKIYA TSUTOMU;AOIKE MINAKI |
分类号 |
H02M7/06;H02M7/12;H02M7/48;H05B41/24;(IPC1-7):H02M7/48 |
主分类号 |
H02M7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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