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LED lamp tube power driving circuit and LED lamp tube

A power drive circuit and LED lamp technology, which is applied in the direction of electric lamp circuit layout, electric light source, electric light source, etc., can solve the problem that the drive circuit cannot be applied to the ballast, and achieve the effect of avoiding interference

Active Publication Date: 2015-03-25
CHENHUI GUANGBAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a LED lamp tube power drive circuit to solve the problem that the existing drive circuit compatible with commercial power and ballasts cannot be applied to all types of ballasts

Method used

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  • LED lamp tube power driving circuit and LED lamp tube
  • LED lamp tube power driving circuit and LED lamp tube
  • LED lamp tube power driving circuit and LED lamp tube

Examples

Experimental program
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Embodiment Construction

[0032] like figure 1 Shown, a kind of LED drive circuit, comprises high-frequency power drive module, low-frequency power drive module and the switch circuit that switches them, high-frequency power drive module can adopt the structure disclosed as CN 203596948 U, and low-frequency power drive module can adopt For commercially available products, such as NXP's SSL2109, the switching circuit can be composed of ordinary switching components. When using a high-frequency power supply, use a high-frequency power supply to drive the module, mainly through the switching circuit to connect the drive module to the corresponding power supply.

[0033] like image 3 As shown, an LED lamp tube including the LED driving circuit includes a PC tube 10, a glass tube 11, a light bar 1 inside the tube, and lamp caps at both ends of the tube, 6, 7, including a card slot inside the PC tube 10, The LED light bar 1 is installed in the PC tube through the slot.

[0034] The lamp caps at both ends...

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PUM

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Abstract

The invention discloses an LED lamp tube power driving circuit and an LED lamp tube. The LED lamp tube power driving circuit comprises a high-frequency power driving module, a low-frequency power driving module and a switching circuit for switching the high-frequency power driving module and the low-frequency power driving module. As the switching circuit is utilized for switching the low-frequency power driving module and the high-frequency power driving module, the high-frequency power driving module is applied to all electronic ballasts, and the influence on the driving circuit from the rest circuits is avoided.

Description

technical field [0001] The invention relates to a power drive circuit, in particular to an LED lamp tube power drive circuit. Background technique [0002] Fluorescent lamps are the most commonly used lighting tools in offices and residences. Traditional fluorescent lamps generally use fluorescent tubes. Due to the advantages of LED energy saving and environmental protection, as LED technology continues to mature, fluorescent tubes are gradually replaced by LED tubes. Since existing fluorescent lamps are often equipped with ballasts, the output current of which is AC, while LEDs need to be driven by DC, so it is necessary to modify the circuit of the existing lamps to realize the replacement. [0003] CN 203596948 U discloses an LED drive circuit compatible with electronic ballasts, including: a step-down and current-limiting circuit for stepping down and limiting the output of the electronic ballast to output alternating current; a high-frequency rectifier circuit for for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02F21S2/00F21V23/04F21Y101/02H05B44/00
CPCF21Y2103/10F21Y2115/10F21K9/272F21K9/278H05B45/40Y02B20/30H05B45/3725
Inventor 赵国松
Owner CHENHUI GUANGBAO TECH CO LTD