Hot start ballast and low-frequency full bridge circuit of metal halide lamp

A full-bridge circuit, hot-start technology, applied in the power supply field, can solve the problem of short service life of LED lamps, and achieve the effect of ensuring the service life, reducing the conducted EMI noise ratio, and realizing the effect of use.

Inactive Publication Date: 2016-05-25
林晓东
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the service life of metal halide lamps is about 20,000 hours less than that of LEDs, its cost is much lower than that of LEDs, and in the actual use of LED lamps, because the lifespan of the external circuit is much lower than the actual lifespan of LEDs, The overall service life of LED lamps is short, not even 10,000 hours; therefore, metal halide lamps have the advantages of high luminous efficiency, high color rendering index, low cost, and long service life, and are ideal light sources for large-scale lighting

Method used

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  • Hot start ballast and low-frequency full bridge circuit of metal halide lamp
  • Hot start ballast and low-frequency full bridge circuit of metal halide lamp

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Embodiment Construction

[0013] In order to have a further understanding and understanding of the structure, features and effects of the invention, a preferred embodiment is now given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0014] Such as figure 1 and figure 2 As shown, a metal halide lamp hot-start ballast and low-frequency full-bridge circuit described in this embodiment mainly includes a filter circuit 2, a flyback conversion circuit 3, a controller 1, an auxiliary power supply circuit 4, and a low-frequency full-bridge circuit. The circuit 5, the drive circuit 6 and the ignition unit 12, the input terminal of the filter circuit 2 is connected to the low-voltage DC input power supply, the other output terminal is connected to the flyback conversion circuit, the controller 1 is connected to the flyback conversion circuit 3, and the auxiliary power supply The output terminal of the circuit 4 is connected with the low-frequency full-bridge circuit 5...

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Abstract

The invention discloses a hot start ballast and low-frequency full bridge circuit of a metal halide lamp. The hot start ballast and low-frequency full bridge circuit comprises a filter circuit, a flyback transformation circuit, a controller, an auxiliary power supply circuit, a low-frequency full-bridge circuit, a driving circuit and an ignition unit, wherein the input end of the filter circuit is connected with a low-voltage DC input power supply, the output end of the filter circuit is connected with the flyback transformation circuit, and the controller is connected with the flyback transformation circuit. According to the invention, ignition can be realized in the low-frequency voltage, so that the metal halide lamp can be lightened when the lamp is hot, practical using requirements are met, service life of a metal halide lamp bulb is ensured, and use is realized effectively; and the single-end flyback transformation circuit works in the continuous work mode, so that the conduction EMI noise ratio is greatly reduced; and the duty ratio is adjusted, and power-constant work and circuit protection can be realized rapidly in the precise power-constant control process.

Description

technical field [0001] The invention relates to the technical field of a power supply, in particular to a hot-start ballast for a metal halide lamp and a low-frequency full-bridge circuit. Background technique [0002] At present, the metal halide lamp is the abbreviation of the metal halide lamp. The metal halide lamp is a discharge lamp that works on an AC power source and generates arc discharge in the mixed vapor of mercury and rare metal halide. The metal halide lamp is a high-pressure mercury lamp. Based on the third-generation light source made by adding various metal halides, it is widely used in the lighting of stadiums, exhibition centers, large shopping malls, industrial plants, street squares, stations, docks and other places. Although the service life of metal halide lamps is about 20,000 hours less than that of LEDs, its cost is much lower than that of LEDs, and in the actual use of LED lamps, because the lifespan of the external circuit is much lower than the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/285
CPCH05B41/285
Inventor 林晓东
Owner 林晓东
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