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Conversion module of electronic ballast-driven LED (light emitting diode)

A technology of electronic ballast and conversion module, which is applied in the electronic field and can solve the problems of high cost

Inactive Publication Date: 2012-08-22
永康市普发科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current LED drive power supply is basically a constant current drive power supply in the form of a switching power supply, but it generally has the disadvantage of high cost.

Method used

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  • Conversion module of electronic ballast-driven LED (light emitting diode)
  • Conversion module of electronic ballast-driven LED (light emitting diode)

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention will be further described:

[0013] The electronic ballast drives the LED conversion module, which is connected between the electronic ballast and the LED array. The conversion module includes a high-frequency current limiting circuit for adjusting the high-frequency and high-voltage AC current at the output end of the electronic ballast. The rectification and filtering circuit for rectification and filtering to become a stable DC, the initial voltage stabilization circuit for adjusting the LED drive voltage, the constant current drive circuit for adjusting the current control required by the LED, the high frequency current limiting circuit, the rectification and filtering circuit, The initial voltage stabilizing circuit and the constant current driving circuit are connected together. Among them, the high-frequency current limiting circuit is composed of resistor R1, resistor R2, resistor R3, resistor...

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Abstract

The invention belongs to the field of electronic technology, and particularly relates to a conversion module of an electronic ballast-driven LED. The conversion module is connected between an electronic ballast and an LED array, and is characterized in that the conversion module includes a high-frequency current limiting circuit for regulating a high-frequency high-voltage AC (alternating current) at the output end of the electronic ballast, a rectifier filter circuit for rectifying and filtering the high-frequency high-voltage AC to a stable DC (direct current), an initial voltage stabilizing circuit for regulating an adaptive LED driving voltage, and a constant current drive circuit for regulating the LED to desired current control, wherein the high-frequency current-limiting circuit, the rectifier filter circuit, the initial voltage stabilizing circuit and the constant-current drive circuit are in fit-connection with each other. According to the invention, the conversion module overcomes the disadvantage of high cost of the existing LED drive power supply, and the LED can be driven only by connecting one necessary conversion controller for driving the LED with four output ports of the common electronic ballast. In addition, the conversion controller has adaptive regulation function, and can supply stable constable current to various kinds of LED load.

Description

technical field [0001] The invention belongs to the field of electronic technology, in particular to a conversion module for an electronic ballast to drive an LED. Background technique [0002] LED has the advantages of low power consumption and long service life, and has been widely used in lighting, display and other fields, such as LED lighting, LED display screen, LED lighting and so on. With the country's increasing emphasis on green light sources, the market and application prospects of LED products are very broad. [0003] Since the LED is driven by DC voltage, the mains voltage cannot be directly used, and the LED drive power supply that converts the mains voltage into a DC voltage must be used. [0004] The current LED drive power supply is basically a constant current drive power supply in the form of a switching power supply, but it generally has the disadvantage of high cost. As we all know, AC electronic ballasts for fluorescent lamps have a development histor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/282
Inventor 罗正华陈永恩
Owner 永康市普发科技有限公司
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