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High-power-factor high-voltage non-stroboscopic LED linear drive circuit

A high power factor, linear drive technology, applied in the field of LED drive, can solve the problem that the traditional linear LED drive circuit cannot be flicker-free, and achieve the effect of high power factor

Pending Publication Date: 2018-08-24
SUZHOU FEIDAXU MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the load characteristics of the LED, the traditional linear LED drive circuit cannot achieve the characteristics of flicker-free while maintaining a high power factor of the system

Method used

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  • High-power-factor high-voltage non-stroboscopic LED linear drive circuit

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Embodiment Construction

[0045] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] In order to achieve the purpose of the present invention, in some embodiments of a high power factor high-voltage flicker-free LED linear drive circuit, such as figure 1 As shown, a high power factor high-voltage flicker-free LED linear drive circuit includes:

[0047] A load circuit 1, including a plurality of LEDs connected in series;

[0048] Voltage source 2 for powering the LEDs;

[0049] The first current limiting circuit 3 is connected in series with the load circuit 1 to form a series module 6, the first current limiting circuit 3 is used to control the constant current flowing through the load circuit 1;

[0050] An energy storage circuit 4, which is connected in parallel with a series module 6 to form a parallel module 7, and the energy storage circuit 4 is used for storing electricity;

[0051] The second current limiting...

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Abstract

The invention discloses a high-power-factor high-voltage non-stroboscopic LED linear drive circuit, and the circuit comprises a load circuit which comprises one or more LEDs in series; a voltage source for supplying power to the LED; a first current limiting circuit connected in series with the load circuit to form a series module, wherein the first current limiting circuit is used for controllingthe current passing through a load circuit to be constant; an energy storage circuit which is in parallel connection with one or more series modules in parallel to form a parallel module, wherein theenergy storage circuit is used for storing the power; a second current limiting circuit which is connected in series with the parallel module, wherein the second current limiting circuit are used forcontrolling the current flowing through the parallel module to be constant and controlling the total energy transmission of a system. The circuit provided by the invention is simple in structure, islow in cost, can achieve the non-stroboscopic characteristic of the LED under the condition that the higher power factor of the system is maintained, achieves the no-ripple characteristic, and achieves the perfect characteristics of the system.

Description

technical field [0001] The invention belongs to the technical field of LED driving, and in particular relates to a high-power-factor, high-voltage, flicker-free LED linear driving circuit. Background technique [0002] As an efficient new light source, LED is widely used in lighting in various fields due to its long life, low energy consumption, energy saving and environmental protection. The lighting of the LED requires a driving circuit to drive it. [0003] Due to the load characteristics of the LED, the traditional linear LED drive circuit cannot realize the characteristics of flicker-free while maintaining a high power factor of the system. Contents of the invention [0004] In order to solve the above-mentioned technical problems, the present invention proposes a high-power-factor, high-voltage, flicker-free LED linear drive circuit. [0005] In order to achieve the above object, technical scheme of the present invention is as follows: [0006] A high power factor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/40Y02B20/30
Inventor 陶冬毅刘明龙
Owner SUZHOU FEIDAXU MICRO ELECTRONICS CO LTD
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