Why do the led products need ageing testⅱ?
We have touched upon subjects from a variety of led product and we’ll explain everything When the design led product. we are fully prepared for this. but Why do the led products need ageing test ?The theory of product quality is explain For all.
Product quality prone to bias In the initial stage of using and end stage of using. The product server time is over in end stage of using.we have no idea for it end stage of product. initial stage of product(include from raw materials organization, production, packing to shipment.) It has shown that the step is controllable, observable, and its stability may be guaranteed.so We should not only strictly limit its production , but also to do ageing work well.the customer can get excellent led products.

The ageing test of LED products refers to the led factor took a long time to test led with overloaded the circuit.what does mean about “long time”? in generally

Refers to 24hours or 48hours , of course can also be less that 24 or 48hours. Ageing times base on profit loss as well as product cost. Quality Cost Management is an important role for enterprises to improve product quality and reduce product cost. So ageing test is import thing.

Only in the way , we can get high quality led product.. our customers can rest assured that use led.

The high power led module has many advantage . for example :Long life, low pollution, low power consumption, energy saving and impact resistance. The high power led module has advantages over a tradition LED. high efficiency, rich color ,high bright efficiency. And can meet that difference blue light or near-ultraviolet ( UV) light and show high color rendering index.Nevertheless , the high power led module the design process of formulating a reasonable programme to meet the requirements of mass production.
Owing to the resultant force of various factors,we will discuss key words of high power led module as follows;
1、Dissipate heat of high power led : We thought about Webflow to solve this problem with package of low heat resister
2、Semiconductor wafer of led module: Be called LED heart, it is top priorities for led bind.

 

Do we have to prepare any material? Yes let’s me to show that Heat sink and 1W High power led module. Half of computer’ Heat sink

The drilled holes in the Heat sink . The high power led module load to the Heat sink/

 

NOTE:The heat sink is essentially made of paper, otherwise the LED module in there has sustained some damage.

Remove that old reading lamp

fix a position on the drill

Pull plug off switch for sliding roof.

Put the Screw into hole of reading lamp

LOOK:Finish this work:

 

LED controller

There have two type of LED controller in led Market. Their are low voltage led high power controller and high voltage led controller respectively.the led controller is control by MCU or analog circuit. We are try to analysed the option of led controller as follows:

1、Low voltage LED controller

In generally, most of led controller adopt 12-36V input voltage. Echo output pin load 3-6 pcs led.and output current as 20ma The resistance role in current limiterA led product was composed of multiple channel output pin,. In summary: the advantage is low voltage, simply construction , and easy to design; it laws were need that power supply.

1、High voltage LED controller

In generally, most of High voltage led controller use 110 input voltage.echo output pin load 36-48 pcs led. and output current also as 20ma. It not need power supply. It’s supply power by LED controller direct.but user need to take care of user security when installing or using.

Let me introduce that led Wavelength and led colorLet me introduce that led Wavelength and led color today.It’s up to the led Wavelength to seen led color.The led wavelengthwas based in the past on the nm as a unit.in other words : just nanometer or billionths of a meter. In this example: uv led strip’wavelength380nm. Each LED color had a led wavelength. , the correspondence table of LED color and led wavelength as follows:

Mid infrared red:

4600nm-1600nm– invisible light

Low infrared red

1300nm-870nm– invisible light

850nm-810nm- almost invisible light

Near infrared light:

780nm- when direct observation can see a very dark cherry red light

770nm- when direct observation can see a deep cherry red light

740nm- deep cherry red light Red light

700nm- deep red

660nm- red

645nm- fresh red

630nm- Orange

620nm- Orange light

615nm- orange light

610nm- orange light

605nm- amber light or yellow

590nm- “sodium” or yellow

585nm- yellow

575nm- lemon yellow / light green

570nm- Light green

565nm- green

555nm-550nm- fresh green

525nm- pure green /Blue green

505nm- green / blue Green blue 500nm-

495nm- sky blue

475nm- azure blue

470nm-460nm- bright blue

450nm- pure blue

444nm- deep blue

30nm- blue purple violet

405nm- pure purple

400nm- deep purple

Near UV light:

395nm- with reddish purple

How much a watt incandescent lamp is worth in 1 watt LED?
How much a watt incandescent lamp is worth in 1 watt LED? This is the most common issue from General users。At present, lumens of LED as 50-70 lm/W，Incandescent lamp as 10-15 lm/W，CFL as 30-50 lm/W. Look at it this way,The lumens of incandescent lamp are far less LED and CFL. The follow is test data table:
1W LED=3W CFL=15W (Incandescent lamp)
3W LED=8W CFL=25W(Incandescent lamp)
4W LED=11W CFL=40W(Incandescent lamp)
8W LED=15W CFL=75W(Incandescent lamp)
12W LED=20W CFL=100W(Incandescent lamp)

LED module bind.

From the current situation of industrial LED module bind development. Although a step in the right direction, this approach still has some drawbacks.. In this case, many factories begin to manufacture the led module use The bind wire are made of cheap raw material. Just a little bit. Use the alloy wire. With the development of automatic control and information technology. Our led module adopt Pure gold wire to bind,Pure gold wire is the most malleable of all metals. We the best quality and the service attitude will serve for our customer.

The theory of led controllerAbout the theory of led controller ,it had been switch. to control the open and close of current through the switch.the processof getting LED workdone is The theory of led controller. the switchcan use that mechanical or lectronics or MCU to realize process of controlling.

It seem simply, but it’s not all. to guarantee that it can adjust bright during conditions of normal operation. this is difficult. The swiche constant current have to be faced. the switch speed is most import factor.Slow opening speed can lead problem that illumination was uneven and flash of led.

How does it choose a suitable led power?

For the “less than” 40V LED input voltage, if output voltage is less than input voltage, please choose that topology construction of reduction voltage.

and it will make that work easier. The following we will choose the Zener diode. In other words,the Zener diode match your circuit base on input current. If input current is big than 1.2A. it may be use the Zener diode of high bright LED to supply input current. The zener diode have minimal fed back voltage.it seems perfect for steaby current work that LED average current.