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Low-frequency electronic ballast for high-intensity gas discharge lamp HID

A technology of electronic ballasts and gas discharge lamps, applied in the use of gas discharge lamps, electric light sources, electrical components, etc., can solve the problems of unstable output voltage and power, affecting the service life of lamps, and unstable output voltage, etc., to achieve Reduce line loss, reduce initial installation costs, and prolong service life

Inactive Publication Date: 2010-11-10
DONGGUAN BOYING ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing low-frequency electronic ballasts generally include interference suppression circuits, rectification and filtering circuits, power factor correction APFC circuits, DC / AC conversion circuits, output circuits and control circuits. The output of the load side is a low-frequency square wave, which can effectively overcome the acoustic resonance phenomenon. , but the stroboscopic phenomenon that occurs when the existing low-frequency electronic ballast is turned on, the output voltage is unstable, and sometimes the phenomenon that the light does not appear
At the same time, because the lamp works in the low frequency band for a long time, the power of the output voltage is unstable, which affects the service life of the lamp

Method used

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  • Low-frequency electronic ballast for high-intensity gas discharge lamp HID
  • Low-frequency electronic ballast for high-intensity gas discharge lamp HID

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Embodiment Construction

[0021] In order to facilitate the understanding of those skilled in the art, the structural principle of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings:

[0022] Such as figure 1 Shown is an embodiment of a high-intensity gas discharge lamp HID low-frequency electronic ballast. It includes sequentially connected EMI suppression interference circuit, rectification filter circuit, power factor correction APFC circuit, DC / AC conversion circuit, output circuit and control circuit, the control circuit is connected with DC / AC conversion circuit and output circuit respectively, and the power A DC / DC step-down circuit is also connected between the factor correction APFC circuit and the DC / AC conversion circuit, and the power factor correction APFC circuit is also connected with a low-voltage stabilizing circuit, and the low-voltage stabilizing circuit is respectively connected with the DC / DC step-down ...

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Abstract

The invention discloses a low-frequency electronic ballast for a high-intensity gas discharge lamp HID, which comprises an EMI interference suppression circuit, a rectifier and filter circuit, a power factor correction APFC circuit, a DC / AC conversion circuit, an output circuit and a control circuit, which are sequentially connected, wherein the control circuit is respectively connected with the DC / AC conversion circuit and the output circuit, and a DC / DC step-down circuit is also connected between the power factor correction APFC circuit and the DC / AC conversion circuit; and the power factor correction APFC circuit is also connected with a low-voltage regulator circuit, and the low-voltage regulator circuit is respectively connected with the DC / DC step-down circuit, the control circuit, the DC / AC conversion circuit and the output circuit. The low-frequency electronic ballast of the invention has the advantages of reliable and stable work, high efficiency and prolonged service life of the lamp, and can eliminate the acoustic resonance and stroboscopic phenomena.

Description

technical field [0001] The invention relates to an electronic ballast, in particular to a low-frequency electronic ballast suitable for a high-intensity gas discharge lamp HID. Background technique [0002] High-intensity gas discharge lamp HID has been widely used in squares, road lighting and other occasions due to its high luminous efficiency, good color temperature, and long life. Among them, the metal halide lamp is considered to be one of the best artificial light sources due to its many advantages. Due to the negative resistance characteristics of metal halide lamps and special start-up requirements, they must be used together with matching ballasts. [0003] The existing high-intensity gas discharge lamp HID generally works in the frequency range of 2KHz to 100KHz, and it is easy to generate acoustic resonance. In order to reduce the generation of acoustic resonance, the existing high-intensity gas discharge lamp HID generally uses low-frequency technology to make t...

Claims

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Application Information

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IPC IPC(8): H05B41/292
CPCY02B20/208Y02B20/00
Inventor 于叔平
Owner DONGGUAN BOYING ENERGY SAVING TECH
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