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Alternating-current direct drive light-emitting diode (LED) method for automatically stabilizing power and electronic circuit based on alternating-current direct drive LED method

An AC direct drive and electronic circuit technology, applied in the electronic field, can solve the problems of poor reliability, low efficiency of driving power supply, large power dissipation of active load, etc., and achieve stable power, high efficiency of driving power supply, and good social and economic benefits Effect

Active Publication Date: 2015-12-23
HEFEI SPRUCE OPTOELECTRONICS TECH
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AI Technical Summary

Problems solved by technology

This technology has a certain effect, but it has an obvious technical problem that its active load has a large power dissipation, poor reliability, and low efficiency of the driving power supply.

Method used

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  • Alternating-current direct drive light-emitting diode (LED) method for automatically stabilizing power and electronic circuit based on alternating-current direct drive LED method
  • Alternating-current direct drive light-emitting diode (LED) method for automatically stabilizing power and electronic circuit based on alternating-current direct drive LED method

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention will be further described.

[0018] see figure 1 , a self-stabilizing power AC direct drive LED method is to use pulse width modulation to automatically stabilize the power of the AC direct drive LED load. The pulse width of the pulse width modulated pulse signal is controlled by the magnitude of the AC mains voltage, that is, the AC direct drive LED method is a mains voltage controlled pulse width modulation method.

[0019] Furthermore, the self-stabilizing power AC direct-drive LED method using commercial voltage-controlled pulse width modulation is realized by means of electronic circuits or integrated circuits.

[0020] Furthermore, the self-stabilizing power AC direct-drive LED method using commercial voltage-controlled pulse width modulation is suitable for AC direct-drive LED circuits with LED hierarchical control.

[0021] see figure 1 Further, the electronic circuit based on the self-st...

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Abstract

The invention provides an alternating-current direct drive light-emitting diode (LED) method for automatically stabilizing power and an electronic circuit based on the alternating-current direct drive LED method. The electronic circuit comprises a full-wave rectifier circuit, a co-rotating tandem LED load sub-circuit, a commercial power voltage-controlled pulse width modulation circuit and an on-off control and constant-current circuit. The key technology of the alternating-current direct drive LED method is that the power of alternating-current direct drive LED load is automatically stabilized by a pulse width modulation method; and meanwhile, the pulse width of a modulation signal is controlled by the size of input alternating-current power voltage. The alternating-current direct drive LED method has the beneficial technical effects that the power of the alternating-current direct drive LED load can be stabilized; and the alternating-current direct drive LED method has the advantages of high drive power supply efficiency, low temperature rise, low cost, high reliability and the like.

Description

technical field [0001] The invention belongs to the field of electronics, and in particular relates to an AC direct-drive LED method with self-stabilizing power and an electronic circuit thereof. Background technique [0002] As a new generation of light-emitting devices, LED has the outstanding advantages of high efficiency and energy saving, and is constantly replacing traditional lighting technologies and is widely used. LED chip and LED driving circuit are two key technologies of LED lighting. Compared with switching power supply-driven LED technology, AC direct-drive LED technology has the advantages of high reliability, low cost, and small size, and is increasingly widely used. However, there is an important technical problem in the existing AC direct drive LED technology, that is, the output power rises too fast with the increase of the input AC mains voltage, and the driving circuit is unreliable. In the prior art, an active load is mainly used to stabilize the dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 赵天鹏李雪白
Owner HEFEI SPRUCE OPTOELECTRONICS TECH
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