High-power LED lamp power supply with function of delay protection

A technology of LED lighting and time-delay protection, which is applied in the direction of electric light source, lighting device, lamp circuit layout, etc., can solve the problems of bulky transformer, large internal power consumption, bulky power supply, etc., and achieve light weight and low internal power consumption , small size effect

Inactive Publication Date: 2015-06-10
宁波普诚电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing high-power LED lighting power supply usually uses a transformer to solve the problem of step-down rectification, but because the transformer is too bulky, the volume of the entire power supply is too large, and its internal power consumption is large.

Method used

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  • High-power LED lamp power supply with function of delay protection

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Embodiment Construction

[0012] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0013] Embodiments of the present invention relate to a high-power LED lighting power supply with a delay protection function, such as figure 1 As shown, it includes a front-stage circuit and a rear-stage circuit, and the front-stage circuit includes a resistance-capacitance step-down circuit and a rectification filter circuit; the rear-stage circuit includes a voltage-dividing charging circuit; The AC output terminal is conne...

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Abstract

The invention relates to a high-power LED lamp power supply with a function of delay protection. The high-power LED lamp power supply comprises a front-stage circuit and a rear-stage circuit. The front-stage circuit comprises a resistance-capacitance voltage reducing circuit and a rectifying filter circuit. The rear-stage circuit comprises a voltage-dispersing charging circuit. An input end of the resistance-capacitance voltage reducing circuit is connected with an alternating-current output end. An output end of the resistance-capacitance voltage reducing circuit is connected with an input end of the rectifying filter circuit. An output end of the rectifying filter circuit is connected with the voltage-dispersing charging circuit which slowly charges an electrolytic capacitor and controls a transistor to work in a linear area during starting. The high-power LED lamp power supply is small in size, lightweight, low in internal power consumption, high in efficiency, and capable of avoiding impact of instant large current.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a high-power LED lighting power supply with a time-delay protection function. Background technique [0002] LED (LightingEmittingDiode) lighting is light-emitting diode lighting, which is a semiconductor solid-state light-emitting device. It uses a solid semiconductor chip as a light-emitting material. In the semiconductor, the excess energy is released through the recombination of carriers to cause photon emission, and directly emits red, yellow, blue, and green light. On this basis, using the principle of three primary colors, Adding fluorescent powder can emit light of any color such as red, yellow, blue, green, blue, orange, purple, white, etc. [0003] Driving light-emitting diodes with mains electricity needs to solve the problem of step-down and rectification. It also needs to have relatively high conversion efficiency, small size and low cost. It should also solve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 张曙坚梁志学张晓娟张慧香建雪林
Owner 宁波普诚电子有限公司
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