This week’s LED summary: The world’s focus events are changing LEDs. What reason do you have for the same?

This week is a very special week. Two things that people around the world are paying attention to have happened. An unexpected US election, Trump successfully moved into the White House; the other was Double 11, because Jack Ma had forgotten that it was Singles Day. These two things changed LED, one changed the channel sales model, and the other changed LED plant lighting. Such a special week (news summary), the most worthy of you in the LED.

The status of LED is established, Xiamen begins to deploy smart lighting

Thirteen years ago, China's first national semiconductor lighting industrialization base was born in Xiamen, and Xiamen immediately became one of the sources and birthplaces of China's LED lighting industry. Looking forward to the "Thirteenth Five-Year Plan", Xiamen has also proposed the goal of building a global LED epitaxial chip and high-end LED lighting system R&D and production base, sounding the charge for the second innovation and entrepreneurship of the optoelectronic LED industry.

Basic knowledge of LED patch glue and epoxy glue

The role of SMD adhesives. Surface mount adhesives (SMA, surface mount adhesives) are used for wave soldering and reflow soldering. They are mainly used to fix components on the printed board. They are generally distributed by dispensing or stencil printing. , In order to maintain the position of the component on the printed circuit board (PCB) to ensure that the component will not be lost during the transfer process on the assembly line. After the components are pasted, they are placed in an oven or reflow soldering machine to heat and harden.

Thermal and light effect analysis of LED light engine

We all know that LED is a semiconductor light-emitting device, and semiconductor is a heat-sensitive device, which means that it is very sensitive to temperature. In other words, temperature will directly affect its performance and parameters. As an electrical-optical conversion device, its most important indicator is how many watts of electrical power is input and how much luminous flux (lumens) is output. We call it luminous efficiency (luminous efficiency). This indicator represents the most important quality indicator of LED. The user chooses the LED with the smallest wattage according to the luminous flux (lumens) he needs.

How to choose driving power for LED filament lamp?

LED is a high-efficiency light-emitting diode device. It must work in a DC constant current environment to continuously and stably emit bright light and illuminate the world. The pros and cons of the driving power supply will directly affect its brightness and light quality. How to choose a good LED filament drive power supply is the key to making LED filament lamps with excellent cost performance.

Summary of four major issues in LED drive power design

The quality of the LED drive power supply will directly affect the life of the LED, so how to make an LED drive power supply is the top priority of the LED power supply designer.

How much do you know about the classification of LED drive power?

First of all, let's talk about what is LED drive power? It can convert the power supply into a specific voltage and current to drive the voltage converter of the LED light. Under normal circumstances: the input of the LED drive power includes high-voltage power frequency AC (ie mains), low-voltage DC, high-voltage DC, low-voltage high-frequency AC (Such as the output of an electronic transformer) and so on. The output of the LED driving power supply is mostly a constant current source that can change the voltage with the change of the forward voltage drop of the LED.

Selection of driving power supply for LED light bar dimming application

The application of LEDs in lighting fixtures is becoming more and more extensive, coupled with the uniqueness that is superior to traditional lighting methods, in addition to improving the quality of life, improving the efficiency of the light source and extending the life of the lamp, it uses its unique dimming function to adjust the color temperature and brightness The greatest advantage of energy-saving applications is fully achieved.

The realization method and advantages and disadvantages of white LED

At present, there are three main methods for LED to achieve white light:

　　1. Synthesize white light through LED red, green and blue three-color multi-chip set and light emission.

20 must-know lighting design points

Lighting design is an important part of architecture and decoration design, and it is also an important means to add "light" to the building. The most important task of architectural lighting design is to modify and beautify buildings based on the visual needs of consumers, with the ingenious movement of light and shadow, to create a beautiful and comfortable visual environment for people.