Device for operating a short arc type hid lamp
A lighting device and technology for discharge lamps, which are applied to discharge lamps, high-pressure discharge lamps, gas discharge lamps, etc., can solve problems such as damage to discharge vessels, decrease in light output, and influence on the service life of lamps, and achieve the effect of inhibiting blackening.
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[0031] figure 1 The schematic structure of the short-arc type discharge lamp lighting device of this invention is shown.
[0032] The lighting device 100 includes a discharge lamp 10 and a power supply device 20 , and the power supply device 20 is composed of a switch unit 101 , a full bridge unit 102 , and a control unit 103 .
[0033] The discharge lamp 10 is connected in series to the ignition transformer TR1, and a capacitor C3 is also connected in parallel to the series circuit of the discharge lamp 10 and the transformer TR1.
[0034] The power supply device 20 supplies a direct current to the discharge lamp 10 at the time of lighting start, and supplies an alternating current at the time of stabilization.
[0035] The switch unit 101 is connected to the DC power supply E through terminals T1 and T2, and is composed of a capacitor C1, a switching element S1, a diode D1, an inductor L1, and a sliding capacitor C2. The switching element S1 is controlled by the control un...
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