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A LED power supply with constant current output

A technology of power supply and constant current, applied in the direction of electrical components, etc., can solve problems affecting the scope of application

Active Publication Date: 2022-06-07
中山市明联电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the technology is simple, it has some disadvantages that seriously affect its application range.

Method used

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  • A LED power supply with constant current output
  • A LED power supply with constant current output
  • A LED power supply with constant current output

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Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail below in conjunction with its embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention, not to limit the present invention. invention. Other systems, methods and / or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in the following detailed description and will be apparent from the following detailed description.

[0018] like figure 1 As shown, a schematic diagram of a constant cu...

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Abstract

The invention discloses an LED power supply with constant current output, comprising a rectification circuit, a voltage transformation circuit, a feedback circuit, a control circuit, a plurality of LED lighting circuits, and a counting circuit, and the counting circuit is connected to a plurality of LED lighting circuits , counting according to the number of lit LEDs to adjust the reference voltage input to the feedback circuit, the feedback circuit performs summation calculation and output to the control circuit according to the adjustment of the reference voltage, and the control circuit controls the voltage transformation according to the output of the summation circuit The control signal of the circuit to keep the output current to the LED constant. The present invention performs voltage feedback through the number of lit LEDs, and controls the output current value of the power supply to be constant.

Description

technical field [0001] The present invention relates to the technical field of LED lighting, in particular to an LED power supply with constant current output. Background technique [0002] As a new type of energy-saving light source, LED lamps have been widely accepted and adopted due to their environmental protection, energy saving, long life, small size and other characteristics. With the continuous improvement of people's living standards, higher requirements are placed on the brightness and energy consumption of LED lights at home or in stores, that is, people need to further improve the brightness of LED lights, while requiring LED lights to have lower energy consumption . And brightness control is performed according to the lighting quantity of different LEDs, so as to achieve maximum brightness control at the lowest loss or energy consumption, so as to meet people's needs for brightness and energy consumption. [0003] In the prior art, in order to reduce the cost,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/10H05B45/40H05B45/345
Inventor 不公告发明人
Owner 中山市明联电子有限公司
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