To provide an LED illumination fixture capable of downsizing compared with a conventional constitution.
The LED illumination fixture 1 is used for a DC power distribution system to supply a direct current electric power output from an AC/DC converter 112 to convert an alternate current power supply AC to a direct current power supply to a direct current equipment via a direct current supplying line Wdc wired in a building. At an output transformer T1, a first and a second auxiliary windings L11, L12 to respectively switch on a first and a second switching elements Q1, Q2 by voltage induced between respective both ends are installed, and first and second control circuits 6, 7 have switch members SW1, SW2 to switch off the switching elements Q1, Q2 at the time of on, a peak-hold circuit 8 to peak-hold an induced voltage formed in the respective auxiliary windings L11, L12, and a comparator Comp 1 to switch on the switch members SW1, SW2 when the induced voltage is reduced to a predetermined level or more than a hold voltage.
SHIOHAMA EIJI
NISHINO HIROYUKI
OKAWA MASANAO
| JPH09190891A | 1997-07-22 | |||
| JP2000312487A | 2000-11-07 | |||
| JP2004519826A | 2004-07-02 | |||
| JP3387260B2 | 2003-03-17 | |||
| JP2007165017A | 2007-06-28 | |||
| JP2006134791A | 2006-05-25 |
| WO2007060128A1 | 2007-05-31 |
Atsuo Mori