LED drive control circuit

A LED drive and control circuit technology, applied in the direction of electric lamp circuit layout, electric light source, lighting device, etc., can solve the problems of high cost, easy damage, complicated circuit, etc., and achieve the effect of high cost, low cost and simple circuit structure

Active Publication Date: 2010-09-15
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF8 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, DC-DC chopping technology is used to drive LED in low-voltage places. It has the advantages of low power consumption, high efficiency, stability and reliability, small size per unit power, light weight, etc., but its cost is high, the circuit is complicated, and easy to use. Damage, strong high-frequency interference and other shortcomings, which bring inconvenience to users

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 control circuit
  • LED drive control circuit
  • LED drive control circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] In the embodiment of the present invention, a constant current integrated chip is used in the LED drive control circuit, and the operation of the constant current integrated chip is controlled by a single chip microcomputer.

[0015] figure 1 The structure of the LED drive control circuit provided by the embodiment of the present invention is shown, and for the convenience of description, only the part related to this embodiment is shown.

[0016] refer to figure 1 , The LED drive control circuit includes a single-chip microcomputer U1, a MOS tube Q1, a triode Q2, a constant current integr...

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 provides an LED drive control circuit suitable to the technical field of lighting circuits, which comprises a singlechip, an audion, an MOS (Metal Oxide Semiconductor) tube, a power inductor and a constant current integrated chip, wherein a power input pin and a power output pin of the singlechip are respectively connected with the anode and the cathode of a power input end; the base electrode of the audion is connected with the singlechip, and the emitting electrode of the audion is connected with the cathode of the power input end; the grid electrode of the MOS tube is connected with the collector electrode of the audion through a divider resistor, and the source electrode of the MOS tube is connected to the anode of the power input end; one end of the power inductor is connected with the drain electrode of the MOS tube, the other end of the power inductor is connected with the anode of a diode, and the cathode of the diode is connected to the anode of an LED; a working enable pin of the constant current integrated chip is connected with the singlechip, a feedback pin of the constant current integrated chip is connected to the cathode of the LED for sampling current, and a power pin is connected to a node arranged between the power inductor and the anode of the diode. The LED drive control circuit is realized by adopting the constant current integrated chip with low cost and high efficiency, can ensure stable and reliable work of the LED, and has very simple structure.

Description

technical field [0001] The invention belongs to the field of lighting circuits, in particular to an LED driving control circuit. Background technique [0002] With the continuous development of science and technology, new products and new technologies are constantly innovating. As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. There are also various LED drive circuits. At present, DC-DC chopping technology is used to drive LED in low-voltage places. It has the advantages of low power consumption, high efficiency, stability and reliability, small size per unit power, light weight, etc., but its cost is high, the circuit is complicated, and easy to use. Damage, strong high-frequency interference and other shortcomings have brought inconvenience to users. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide an LED driving control circuit, aiming to sa...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap