Unlock instant, AI-driven research and patent intelligence for your innovation.

LED drive circuit

A technology of LED driving and driving current, applied in the field of electronics, can solve the problems of many electronic components, large system volume and high production cost of dimming and color matching circuit, and achieve the effect of low production cost, small volume and few peripheral devices

Active Publication Date: 2017-08-25
SILERGY SEMICON TECH (HANGZHOU) CO LTD
View PDF5 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides an LED driving circuit to solve the problem that in the prior art, the dimming and coloring circuit requires many electronic components, the production cost is high, and the volume of the system is very large, which is not conducive to integration. question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • LED drive circuit
  • LED drive circuit
  • LED drive circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0037] Furthermore, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0038] Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another elemen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an LED drive circuit. A power converter provides a predetermined drive current for an LED lamp. Then, a current distribution circuit adjusts the proportion of the current of each load in the drive current according to the magnitude of the drive current so as to adjust the color temperature or brightness of the LED lamp. In addition, when the drive current is small, the LED drive circuit provided by the invention can eliminate output jitter caused by mains supply jitter or stroboflash brought by a dimmer. Therefore, for the LED drive circuit of the invention, there is no need to configure an independent constant current drive circuit and a constant current control circuit for each load to adjust the color temperature or brightness. The circuit structure is relatively simple and easy to integrate. Fewer peripheral devices are used. The LED drive circuit is small, and is of low production cost.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an LED driving circuit. Background technique [0002] As a new type of lighting tool, LED lighting has the advantages of high light efficiency, long life, and environmental protection, so it is more and more widely used in various lighting fields. There are two ways of LED dimming: DC dimming and PWM dimming. Since PWM dimming has the advantages of constant light color and better stability at low brightness, it is widely adopted by those skilled in the art. [0003] For some special light source environments, not only the brightness of the LED lamps needs to be adjusted, but also the color temperature of the LED lamps needs to be adjusted. refer to figure 1 , shows an LED driving circuit using the prior art. In this implementation, the AC voltage Vac outputs the voltage Vin after passing through the rectification and filtering circuit 01, and the power converter 02 receiv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/395H05B45/36H05B45/20H05B45/385H05B45/3725H05B45/46Y02B20/30
Inventor 赖洪斌王建新
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com