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System for providing output current to one or more light emitting diodes

A technology of light-emitting diodes, output current, applied in the field of circuits

Active Publication Date: 2016-08-17
ON BRIGHT ELECTRONICS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using LEDs to replace incandescent lamps, it is necessary to use a dedicated drive circuit to provide stable output current and output voltage for the LED

Method used

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  • System for providing output current to one or more light emitting diodes
  • System for providing output current to one or more light emitting diodes
  • System for providing output current to one or more light emitting diodes

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Embodiment Construction

[0013] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configurations and algorithms presented below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

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Abstract

The invention provides a system for providing output current to one or more light emitting diodes. The system comprises a switch control assembly which is configured to output control signals and controls on and off of a system power switch by the control signals according to output current characterization signals, demagnetization characterization signals and first and second reference signals, wherein the characterization of output current characterization signals flows through output current of the one or more light emitting diodes, the characterization of the demagnetization characterization signals is the demagnetization condition of an inductor connected with the one or more light emitting diodes, the system power switch is connected to the one or more light emitting diodes by the inductor, and the one or more light emitting diodes and a capacitor are connected between the inductor and the ground in parallel. According to the system, the total current distortion can be reduced to the minimum while the odd harmonic meets the industrial standard.

Description

technical field [0001] The present invention relates to the field of circuits, and more particularly to a system for supplying output current to one or more light emitting diodes. Background technique [0002] At present, light-emitting diode (LED) lighting technology has matured day by day. Due to its high luminous efficiency and long service life, LEDs are widely used in the field of lighting to replace traditional incandescent lamps. However, when using LEDs to replace incandescent lamps, a dedicated drive circuit is required to provide stable output current and output voltage for the LEDs. Contents of the invention [0003] The present invention provides a system for providing an output current to one or more light-emitting diodes, comprising: a switch control assembly configured to characterize a signal based on an output current representing an output current flowing through one or more light-emitting diodes, a characterizing The demagnetization characterization si...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00
Inventor 方倩方烈义
Owner ON BRIGHT ELECTRONICS SHANGHAI
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