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LED power supply with high power factors

A technology of LED power supply and high power factor, which is applied in the direction of electric light source, light source, lamp circuit layout, etc., can solve the problems of small power factor, large volume, complex voltage, etc., and achieve the effect of improving power factor, avoiding transformer and saving space

Inactive Publication Date: 2014-01-29
谢树群
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, high-power LED lighting is mostly composed of several medium-power LED lights connected in series and parallel. For the power supply circuit of this kind of LED lighting, a transformer is used to achieve high current, and the voltage is complex, and the volume is large, and the power factor is small.

Method used

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  • LED power supply with high power factors

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Embodiment Construction

[0011]

[0012] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below.

[0013] Such as figure 1 The schematic diagram of the circuit of the present invention is shown.

[0014] The invention consists of a resistance-capacitance step-down circuit, a rectifier bridge stack, and a valley-filling circuit. The resistance-capacity step-down circuit is connected in series with the voltage input end after the resistor R and the capacitor C1 are connected in parallel, preferably on the live wire input end of the commercial power, and the rectifier bridge The stack DB rectifies the voltage after step-down, and the valley filling circuit is connected in parallel to the rectification output end of the rectification bridge stack DB. On the positive output end of the rectifier bridge stack DB, the anode is connected to the negative output end of the rectifier bridge stack DB. The a...

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Abstract

An embodiment of the invention discloses an LED power supply with high power factors. The LED power supply comprises a resistive and capacitive voltage relief circuit, a rectifying bridge pile and a valley fill circuit. The resistive and capacitive voltage relief circuit is connected to the input end in series and relieves voltage on the input voltage, and the relieved voltage is rectified by the rectifying bridge pile; the valley fill circuit is connected to the output end of the rectifying bridge pile in parallel and increases the power factors of the circuit. By the aid of the LED power supply, voltage is relieved by using the resistive and capacitive voltage relief circuit, transformer usage is avoided, space is saved, and the power factors of the circuit is increased by using the valley fill circuit.

Description

technical field [0001] The invention relates to an LED power supply, in particular to an LED power supply with high power factor. Background technique [0002] At present, high-power LED lighting lamps are mostly composed of several medium-power LED lamps connected in series and parallel. For the power supply circuit of this LED lighting lamp, a transformer is used to achieve high current, and the voltage is complex, and the volume is large, and the power factor is small. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide an LED power supply with high power factor. It can provide a simple LED power supply with high power factor. [0004] In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a high power factor LED power supply, including a resistance-capacitance step-down circuit, a rectifier bridge stack, and a valley-filling circuit. The vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/00
Inventor 谢树群
Owner 谢树群
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