Life Time and Color Index of LED Flashlight

LED lamps life and color keeping degree index, from the current view is very high, in fact many LED lamps still short of this request, because LED flashlight technology involved a lot of problems, very complex, which is mainly system reliability problems, including LED chips, sealing device, drive the power modules, heat and the reliability of the lamps. To have good mechanical properties and sealing, cooling the body and dustproof, LED the rise of temperature of the lamps shall be required little 30 ℃. LED flashlight in addition to improve the design efficiency with light requirements, lamps, appearance beautiful besides, to increase the cooling level, the heat conduction good material, there are reports that, cooling the body with some materials, the thermal conductivity increases by 30%. The following respectively for the problems analysis:

On the analysis of the reliability LED lamps, before the reliability of the basic content of LED some introduction, the reliability of the lamps of LED deep analysis of the help. Nature failure, affiliate failure: LED devices are generally classified into two failures: nature and affiliate failure. Nature means LED chips failure caused by failure, and divided into electric drift and ion thermal diffusion failure. Affiliate failure is general by package structure material, process cause, namely the package structure and use of epoxy, silica gel, conductive rubber, phosphor, welding, lead, process, temperature, etc reasons.

Ten degrees law: some electronic device in certain temperature range, every 10 ℃ temperature rise, the main technical indexes down half (or down a quarter). Practice has proved, LED device heat sink in 50 ℃ temperature to 80 ℃, LED life value with the basic law of ten degrees. Also recently media reports: LED every rise by 2 ℃ temperature devices, its life fell by 10%, when the temperature from 63 ℃ to 74 ℃} rise, average life expectancy down three quarters. Because different device packaging technology, complete the case.

The meaning of life: life is to point to in provisions LED working conditions, the light output power or flux attenuation to the initial value of 70% of working time, at the same time, keep the change in 0.007 in color; Life expectancy is the significance of LED products before failure LED the working time of the average, with MTTF to say, it is the most commonly used electronic device reliability parameters. We have discussed here just life test, other projects are not considered.

Long life test: in order to confirm whether life LED flash lights to 35000 hours, requires a long life test, the current practice of basically form below consensus: because the LED device GAN began optical power output is not stable, so the United States ASSIST by league rules, the need for electricity is aging 1000 hours, the measurement of optical power or flux for the initial value. After 3000 hours and rated current, measuring LED luminous flux (or optical power) attenuation to less than 4%, plus current 3000 hours, flux attenuation to less than 8%, again electrify 4000 hours, a total of 10000 hours, the flux attenuation to less than 14%, namely the flux of the initial value to more than 86%. At this time to prove to ensure that LED to life 35000 hours.

Accelerate (short term) life test: electronic devices can be accelerated life tests in increasing stress (power or temperature) tested under, here to discuss the temperature stress is the way, measuring the calculated life is LED average life expectancy, namely the failure of the average working hours before. Using this method will greatly shorten the service life of the test time flashlights with high lumens , to prompt improvement, improve reliability of LED flashlight.

Universal LED Car Light Bulbs - Car Interior Dome White 48 LED Bulb Light

Specifications:

• High brightness interior box light with 48 long life led car light bulbs
• The LED's of this bright car LED light bulbs is mounted to a stiff circuit board
• The versatile auto dome light can be used anywhere such as light array for lighting trucks, trailers or door, besides using it in auto/car
• Super white and bright car LED light bulbs revitalize your vehicle's interior with maximum illumination
• Built-in current limiting resistor and protect the LED from reversed polarity + - installation
• Replacement bulb has double side adhesive in the back
• Interior bulb simply requires a trouble free plug-and-play installation
• Universal design is suitable for DC 12V power system only
• Size: 65 x 43 x 6mm/2.6 x 1.7 x 0.2in (L x W x T)

Install Interior Car Lights:

• Open up the dome light cover. With older cars just twist the cover until it releases; on newer cars you need to remove several screws
• Pull out the old bulb with your fingers and compare it to the new bulb
• Press the new bulb into the socket. Use a lint-free cloth as the oils in your hands can make the bulb burn out prematurely
• Put the light cover back on
• Turn the light on to make sure it's working

Change a Dome Light Bulb:

• Turn the dome light to the "Off" position. In most vehicles, the "Off" position is the middle of the three options on the switch. Refer to your owner's manual for the exact location
• Remove the bulb lens cover. Depending on the vehicle, you may have to remove two screws holding the lens in place with a screwdriver. If no screws are present, pry the lens off with a flat head screwdriver. Place the screwdriver opposite the light switch and press in. The lens cover should pop off, giving you access to the bulb
• Unscrew the light bulb from the dome socket. Discard the old bulb. Screw a new bulb into the dome socket until the bulb is tight and secured
• Replace the lens cover then push on it to snap it in place or use the screwdriver to secure the screws

In addition to led car lights , there are also other car parts and accessories such as scanner for cars , car decorations , car cigarette lighter , discount car audio , car refrigerator ...All comes with free shipping 

The Newest 7 Inch Touch Screen Android 4.0 OS Car GPS Navigator with WIFI HDMI 3D Game

7 Inch GPS with WIFI HDMI 3D Game In 2012, GPS products will be into the more intelligent system element, the function is also more hasten is diversification. New - 1 android is one recently very popular intelligent GPS navigator, carrying android 4.0 operating system, support WIFI wireless Internet access, in addition to it can support Internet, music, movies, games and so on.

Details:

7" Android 4.0 GPS with Newest Man-Machine Communication Interface,Easier to Operate.

Android 4.0 GPS with Lots of Ports,Multi-function,Supports 3D Map.

Model: new-1android

Screen:7" resistance screen

Size: 188*135*14mm

Connect Internet:support wifi

Game:support 3D,HDMI

OS: Android4.0

RAM: 512M DDR3 RAM

Capacity:8GB

Date Port: Mini-USB

Standby Time:over 2 hours

Net Weight:0.281kg

Video:MKV,AVI,WMV,RMVB,TS,RM,MPEG,VOB,MOV,FLV,MP4,3GP

The Latest Fashion 1080P HD Spy Watch Cameras From TradingMic

When it come to wrist watches, it is necessary to mention Omega - the world's most accurate watches. Wearing Omega watches, means successful and perfect. The well-known name Omega as watch industry and the advertising industry are from the Greek alphabet "omega major", began in 1848, and welcomed among people immediately. Omega is the time scale in sailing, track and field, swimming and other world class events, also often support for European golf, and won the Olympic designated timer up to 31 times. Moreover, Omega is the first and only one watch to be worn on the moon. As a timing tool, the awesome Omega watch took our breath away.

Yet today, with the trend of the times, watches is not only the common carry accessories. Disguised as spy cameras watches are common occurance in the daily life, really unexpected and impossible to defend effectively.

waterproof watch dvr

spy camera watches

Watch hidden cameras

These watch spy camera from china wholesale TradingMic, owns the appearance of watch, but built-in incredible high-tech in the exquisite body. As far as you can discern, these 1080P spy watches DVR can take it down. Natural picture taking, can guarantee the candid effect, in the meantime, never mind being discovered. In terms of portability, much less, it is superior.
Then came the impressive bright spot. Clever design, pinhole camera hidden on the dial, up to 1080P full HD video capture, the spy watches will open your eyes to the new sight. Compared with some spy cameras from other online shop, TradingMic's wristwatch spy  camera supports waterproof and weatherproof, which can run well within 3 meters underwater. As a diving watch, spy watch, or timer, all is at your own will. The next worth to mention is the IR night vision, going on video recording even in the darkness, to get what you want with it, free of the limits of time and space. If you are at home, just connect your watches to PC through USB cable, take it as web camera to go on online video chatting. As the saying goes, small as it is, the sparrow has all the vital organs.

In view of different people's needs, china wholesale TradingMic provides different memory for your choosing, including: 2GB, 4GB, 8GB, even 16GB memory. China electronics supplier TradingMic offers big discounts for all new customers. Being a trendsetter and save today!

Best Video Surveillance Equipment - China Wholesale DVR Surveillance System From TradingMic

Generally speaking, DVR surveillance system can be divided into two main types, one refers to that use DVR cards, the other is the PC-based DVR. In any of the two types, the DVR systems can store the video activity for video playback with a quite long time. It is perfect choice for commercial businesses and frequent travelers. Maybe some people have some concerns about the difference between the two. China wholesale electronics supplier TradingMic ( http://www.tradingmic.com ) will give you some details on them.

First, from the point of configuration, there are obvious difference. PC-based DVR surveillance system must be has the transmission equipment + security camera + video capture card + PC + display or monitor. And the embedded DVR system is based on the transmission equipment + security camera + DVR host + display or monitor.

Of course, in consideration of the combination with computer, it's not too hard to pick up that the PC-based DVR surveillance equipments features powerful functions. However, on the other hand, some embedded DVR systems has the similiar design with home theater systems as DVD/VCD, and coming with IR remote control and mouse except for the control button in the panel. All these will make the operation more simple and humanization, which can meet the different people's operation needs.

In general, for home use, if there is a computer, and no need 24 hours monitoring, just buy video capture card to meet the monitoring demands. Of course, if there is need to the 24 hours uninterrupted monitoring, and has many channels, then a professional embedded DVR devices may be a better choice. After all, keeping the PC in the state of successive 24 hours working every day is not impossible. So, china electronics wholesaler TradingMic will recommend you the following video security surveillance equipment.

4 Channel DVR System with 4 Channel Security Surveillance Cameras

4 Channel + H.264 Compression Format + Network + Motion detection + PTZ control + Remote control + USB Backup + Mouse
Video Input: 4 Channels
Image Compression: H.264 or MPEG-4
Compression Ratio: CIF - 10-200 M/H/C, D1 - 40-640 M/H/C
Display Rate: 200fps
Slot: PCI – Express
DVR Video Format: PAL / NTSC
Built-in HTTP server enables remote monitoring by web browser
Built-in DDNS serve support free domain name application service
Support remote recording with recording files saved in both server and client side
Playback: Intelligent search, multi-channel playback, high speed playback, halve identification time
The Price: US$291.53

With the rapid development of science and technology, the NVR ( Network Video Recorder ) emerges as the times. DVR and NVR, as the HD video security surveillance equipment who will eventually dominate the market? Perhaps it is a question. Think over, DVR has a higher mature market awareness, it need sufficient efforts it NVR wants to replace the DVR.

XBOX 360 Video Games Will Be Integrated Into Windows 8 Platform

Since started research and development, Windows 8 OS has been receiving much concerns all the time. Within the few days, according to foreign media reports from Teknylate.com and Insideris.com, Windows 8 - the next generation of Microsoft's operating system will allow users to run Xbox 360 video game on the PC .

Here it comes, first...TradingMic's experts ( http://www.tradingmic.com ) will go on Xbox 360 video games review for you. As part of the seventh generation of video game consoles with Sony's PlayStation 3 and Nintendo's Wii, Xbox 360 is the successor to the Xbox released by Microsoft. The major features of Xbox 360 are the integrated Xbox Live service that allows players to compete online, to download arcade games, game demos, trailers, TV shows, music and movies. It has a camera expansion called "Kinect", which uses motion sensor technology to track over 40 points on the body. Games that use this camera say "Kinect Sensor Required" on a purple sticker on the cover. Furthermore, Xbox 360 also offers region specificaccess to third-party media streaming services such as Netflix and ESPN in the US or Sky Go in the UK. Besides, Xbox 360 features powerful Windows Media Center multimedia capabilities.

In fact, as far back as May, it is said that the Windows 8 PC will be able to run Xbox 360 games. At that time, Microsoft officials did not conduct any evaluation on the news, and the words are only treated as a rumor in the industry. However, with the continuous media emphasis, the analysts believed that it is not impossible to integrate Xbox 360 video game into the win 8 operating system. Therefore, Microsoft's attitude has been changed of the win 8 OS. Prior to this, Microsoft has also disclosed, Windows 8 will be integrated Live System as the same as Windows Phone, Games for Windows is a product trademark, and Games for Windows Live is a platform, and this platform will be upgraded through Windows 8.
The most important of the arrival of Windows 8 operating system is that, it provides the support for Tablet PC except the support for PC. And let Windows 8 have a better compatibility, the integration should be started from their own resources. So, it is a good idea to make Windows 8 operating system platform compatible with Xbox 360 game. And it is not difficult to achieve it for Microsoft. But whether Microsoft has this thing on the agenda is still unknown. After all, Microsoft's action is slow now and then.

If dreams can be true. Users can enter into the control panel and XBL Marketplace under the Windows 8 platform. Let alone to play Xbox 360 games with PC. Make the substantial association between game host with PC, which is a real shock for the gaming industry itself. Nevertheless, insiders pointed out that it may not be enough just to buy the Xbox Live service. On the one hand, the cross-platform games are usually not feasible. On the other hand, it can't match the users who control the game through keyboard and mouse with users through Xbox 360 controller. Of course, most important of all, if the pc products wants to run Xbox 360 games, it will be required to pay a certain fee.

Access to TradingMic.Com for know more ! 

Wholesale electronics from china wholesaler & dropshipper - TradingMic.Com

China Wholesale Cartoon Phones from TradingMic - Children' Personal Nanny

In a trice, the summer holidays is coming. While children do enjoy the freedom that comes with the summer months, what comes to your mind when think of the summer holiday with your children? Of course, The safety is always the all-important.
Summer season, many children will go on classes, or summer camp, while their parents are often busy due to business and other reasons. For parents, there is no time to accompany with their children, and  they are unavoidable to worry about the safety. But the mobile phone special for children will help you solve the problem. For this reason, TradingMic's experts ( http://www.tradingmic.com ) recommend some feature phones to you with cute cartoon style and powerful functions. Having one, parents can keep abreast of the children whereabouts, which can make parents more at ease.
Once, all the rage brand name " love tony tong " children cell phone, no number keys, only a few can enter a specific number of keys, while limiting the inbound, outbound and limit text messages to receive or send. According to the child's own characteristics, child cellular phones feature tracking function through SMS message. As long as the parent's cellphone is bundled with children mobile phones, children's phone will automatically notify parents by text message where the child is.

At present, various kids handsets have the same same features: powerful GPS location, the minimum radiation and sos button. If parents can't keep touch with the children, they can find the location or trail through the network. In addition, it can also realize to activate the children phones Listener, and then listen to the environmental background sound where the child are. If the child is in danger, simply press the SOS button, the cellphone function will automatically positioning, meanwhile, it will automatically call the parent numbers and send positioning results to parents via SMS. Which is equal to hire a close nanny for children, and it will be more and more popular.

Another remarkable features of children phones is that the timer switch and few keys. For example, the china wholesale cellphone can be automatically shut down in the class if pre-set the time. What's more, it only has a few keys and make calls with the preset numbers, which can not talk with other people. In this way, it will prevent children from receiving a stranger calls and deceived. On the one hand, it plays a role of limitting children to dial optionally. On the other hand, parents are no need to worry about delaying study. Meanwhile, it can guarantee to keep touch with child go-as-you-please.

Although the phone can make communication between parents and children, and decrease the distance obstacle stage by stage. But parents still need to be aware that only a mobile phone is not enough, parents also need to cast aside themself to communicate with their children, truly become the child's friends and enter into the child's inner world. This is the top-drawer way to get along with child.

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