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

Driving power supply of ballast type LED (Light-Emitting Diode) lamp

A technology for LED lamps and driving power, applied in electric light sources, electric lamp circuit layout, light sources, etc., can solve problems such as large current harmonics and reactive power, grid pollution, and difficulty in supplying circuits, and achieve high working reliability, The effect of long service life and low power consumption

Inactive Publication Date: 2012-06-27
李顺华
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the LED drive power supply mainly uses the AC 220V mains to be supplied to the load after being transformed and rectified by a transformer. The most commonly used rectification method is a rectifier bridge composed of 4 diodes to convert AC into DC, but this method has many disadvantages. : First, what the LED lamp needs is a constant voltage and constant current source, and the above circuit is difficult to provide
Second, the non-linearity of the DC conversion circuit composed of diodes and capacitors will generate a large number of current harmonics and reactive power, causing pollution to the power grid
As far as the current development is concerned, everyone is most concerned about the life of the lamp. Now both the lamp user and the manufacturer can see that the life of the lamp depends on the driving power supply. More than 99% of the lamp failures are caused by the driving power supply. Caused, the life of LED is as long as 50000h, but the life of the supporting driving power is only 10000h. Therefore, one of the key links for the application and promotion of LED lighting devices is the problem of driving power.

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
  • Driving power supply of ballast type LED (Light-Emitting Diode) lamp
  • Driving power supply of ballast type LED (Light-Emitting Diode) lamp
  • Driving power supply of ballast type LED (Light-Emitting Diode) lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] see figure 1 , the schematic diagram of the circuit structure of the driving power supply of the ballast LED lamp of the present invention, including capacitor (C), low consumption (low drop) inductance ballast (L), said low consumption inductance ballast ( A rectification element (D) is connected between the A terminal of L) and the input N terminal; the said LED lamp is connected between two points of the rectification output terminals (B) and (E).

[0012] when figure 1 After the (L) and (N) terminals of the ballast LED lamp drive power circuit are connected to the 220V mains, the capacitor (C) and the low-consumption inductance ballast (L) will limit the current to the specified value. After the AC current is commutated by the rectifying element (D), the AC current is converted into a DC current, which is supplied to the LED lamp to ignite the LE...

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 a driving power supply of a ballast type LED (Light-Emitting Diode) lamp, comprising a capacitor (C) and a low-consumption inductive ballast (L). The driving power supply is characterized in that a rectifying element (D) is connected between the A end and an input N end of the low-consumption inductive ballast (L); and the LED lamp is connected between rectifying output ends (B and C). The driving power supply has the advantages of less self power consumption, low temperature rise, long service life, fewer elements, high working reliability and less harmonic content. The driving power supply is an ideal driving power supply of the LED lamp.

Description

technical field [0001] The invention relates to a driving power supply for a solid-state light-emitting lamp, more specifically, to a driving power supply for a ballast LED lamp. Background technique [0002] At present, the LED drive power supply mainly uses the AC 220V mains to be supplied to the load after being transformed and rectified by a transformer. The most commonly used rectification method is a rectifier bridge composed of 4 diodes to convert AC into DC, but this method has many disadvantages. : One, what LED lamp needs is constant voltage and constant current source, and above-mentioned circuit is difficult to provide. Second, the non-linearity of the DC conversion circuit composed of diodes and capacitors will generate a large number of current harmonics and reactive power, causing pollution to the power grid. This kind of harmonic pollution will not only distort the grid voltage, but also cause failure and damage of electrical equipment. Therefore, it is nec...

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 李顺华
Owner 李顺华
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