Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

LED driving circuit with thyristor dimmer, circuit module and control method

A technology of LED drive and circuit module, which is applied in the field of power electronics and can solve the problems that the efficiency of the LED drive circuit system needs to be improved.

Active Publication Date: 2018-01-23
SILERGY SEMICON TECH (HANGZHOU) CO LTD
View PDF7 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system efficiency of the existing LED driving circuit needs to be improved

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 driving circuit with thyristor dimmer, circuit module and control method
  • LED driving circuit with thyristor dimmer, circuit module and control method
  • LED driving circuit with thyristor dimmer, circuit module and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] 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.

[0067] Additionally, 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.

[0068] 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 eleme...

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

Disclosed is an LED drive circuit with a thyristor dimmer and a control method, by combining the discharge current of the thyristor dimmer in the conduction stage of each AC cycle and the current after conduction until the LED load is lit The discharge current during the period is divided. When the thyristor dimmer starts to conduct, the discharge circuit is controlled to discharge with a larger first current, and after the conduction, the discharge circuit is controlled to discharge with a smaller second current. The discharge can reduce the average discharge current in each cycle of the discharge circuit, reduce the discharge loss, and improve the efficiency of the LED drive circuit.

Description

technical field [0001] The invention relates to power electronics technology, in particular to an LED driving circuit with a thyristor dimmer, a circuit module and a control method. Background technique [0002] Thyristor dimming is a commonly used dimming method at present. The thyristor dimmer adopts the phase control method to realize dimming, that is, the conduction of the thyristor dimmer is controlled every half cycle of the sine wave, and the same conduction is obtained. pass angle. By adjusting the chopping phase of the thyristor dimmer, the conduction phase angle can be changed to realize dimming. [0003] The working characteristic of the Triode for Alternating Current (TRIAC) of the thyristor dimmer is that when its gate is triggered to switch the element from off to on, it needs to maintain the conduction of the element A minimum current, which may be referred to as latching current (Latching Current, or latching current). After the triac is turned on, the min...

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 Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/31H05B45/10H05B45/3575H05B45/345H05B45/3725H05B47/10H02J1/04H02J1/002
Inventor 陈惠强王建新
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com