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Tuesday, April 30, 2013

WSRM---LEDlights Directionality is difference whit CFLs!---SERIESE introduction2!


WSRM---LEDlights Directionality is difference whit CFLs!---SERIESE introduction2!

We won’t rest until we’ve explored every way LEDs and CFLs differ! This post is part of a series doing just that. So far we’ve covered everything from the basics, like rated-life and energy-efficiency to more complex topics, like how each source performs in cold temperatures.you will read the series introduction  in the next period of time.

LEDs and CFLs aren’t always suited for the same applications, because they emit light differently. LEDs are made to emit light in one general direction, while CFLs are omnidirectional, emitting light in all directions, just like incandescent light bulbs.
The LED’s directional light beam is very convenient for many applications because there’s little to no wasted light emitted away from the area you want to illuminate. However, this can get problematic when you replace an omnidirectional light source with a directional LED.
Directional LEDs are perfect for task lighting, display lighting, focused accent lighting, and even for use in recessed cans. Omnidirectional CFLs will work better for decorative lights, like table lamps, chandeliers, and ceiling fans, when you need even light coming from all sides of the light bulb. 
Of course, you should also remember that LEDs are still a developing technology, and manufacturers are creating new LED versions of omnidirectional light bulbs. Just make sure the light bulb gives off the kind of light you need before your purchase it.

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WSRM---LEDlights SERIESE introduction what's difference between LEDlights with CFLs --- Infrared and UV Radiation!


WSRM---LEDlights  SERIESE introduction what's difference between LEDlights  with CFLs --- Infrared and UV Radiation!

We won’t rest until we’ve explored every way LEDs and CFLs differ! This post is part of a series doing just that. So far we’ve covered everything from the basics, like rated-life and energy-efficiency to more complex topics, like how each source performs in cold temperatures.you will read the series introduction  in the next period of time,
Radiation. We’re talking about lights here, so the topic was bound to come up sooner or later.
Infrared Radiation (IR)
WSRM---LEDlights  SERIESE introduction what's difference between LEDlights  with CFLs --- Infrared and UV Radiation!
First of all, it’s a myth that LEDs don’t generate heat. All light sources generate some heat, and LEDs are no exception. Excessive heat can damage an LED or lessen its rated life – so it’s essential that LEDs have well designed “heat sinks” to dissipate the heat generated in the rear of the LED.
This myth may have originated from the very true fact that LEDs don’t emit infrared radiation in the same direction as the emitted light, unlike other light sources.
A CFL, on the other hand, does emit IR and can get very hot to the touch.

Ultraviolet Radiation (UV)
White LEDs don’t emit any UV radiation from the faces of their light bulbs, unlike CFLs and other light sources.
Since bugs are attracted to UV rays, LEDs are well suited for outdoor use. They won’t lure pesky insects to come bother you. CFLs will.
More importantly, the fact that LEDs don’t emit either kind of radiation makes them ideally suited for use in art galleries and museums where degradation of precious artwork and artifacts is a genuine concern.

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Monday, April 29, 2013

WSRM---LEDlights Make Your Office Lighting More Energy-Efficient!

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WSRM---LEDlights Make Your Office Lighting More Energy-Efficient!




Lighting accounts for at least 28% of the energy used in the average office building. That translates to a pretty hefty chunk of the monthly budget. But, by making big and small energy-efficient updates, you can spend less and enjoy a more comfortable office environment.
Big Changes…
If you still use incandescent or outdated fluorescent overhead lights, it’s time for an upgrade.
LEDs use about 80% less energy to generate the same amount of light as incandescent light bulbs. They also last about 25 times longer. So, if you use incandescent light bulbs in your recessed cans, you should replace them with LED lamps or retrofits. LEDs excel at downlighting, because they’re naturally a directional light source. Today’s models have light output and color quality very similar to incandescent lights, so you might not notice the change until you look at your energy bill.
If you have older fluorescent lighting in your office (like T12s), you’re also not saving as much energy as you could. T12 technology is over 70 years old, and incidentally was taken out of production last year. If you exchange your T12s for T8s, you’ll use 45% less energy. Not to mention, the color temperature and light quality of fluorescent lights have improved dramatically over the past few decades, so new lights could be a huge morale boost for all the office workers.

Smaller Changes…
Office lighting isn’t just about what’s on the ceiling. To make sure you’re saving the most energy possible, you also need to take a critical look at the smaller light fixtures in the office.
1. Exit Signs
LED exit signs use less energy than incandescents or fluorescents. While a 40W incandescent sign costs $39 to operate each year and an 11W fluorescent sign costs $11 to run, a 2W LED only costs $2. Not to mention, the LED will last 10+ years compared to the incandescent’s 6 month and the fluorescent’s single-year rated life. The LED exit sign will pay for itself within a year.
If you want to reduce your energy load even more, you can try a photoluminescent exit sign, which uses absolutely no power to light up. The sign’s special material absorbs ambient light and emits it when the lights go out.
2. Display Lighting
Those halogen and incandescent display lights you have to showcase products or posters aren’t doing you any favors when it comes to efficiency. LED display lights match these older fixtures’ light output and quality, but blow them out of the water in terms of energy-savings. A 6W LED generates just as much light as a 50W halogen, and it lasts about 25 times longer!
Plus, LEDs operate at cooler temperatures and don’t give off any UV light – keeping any sensitive displays safe from damage.
3. Accent Lighting
Your office probably has some kind of accent lighting, like step lights in the foyer or cove lighting in the conference room. You may want to consider updating these to more efficient LED lights too. If you were to change out that old cove lighting for some new LED light bars, they would provide you with a notable 75 lumens per watt.
You can find all kinds of innovative LED lights to replace and improve upon your current lighting scheme – from stairway lighting to under counter lights to shelf lights and everything in between.
4. Sign Lighting
For lit signs and marquees outside of the office, changing out the old filament lamps for new, innovative light sources can help you save energy, reduce maintenance, and minimize waste.
A 2W LED or CCFL (cold cathode fluorescent) sign light bulb will emit the same amount of light as an 11W incandescent. They’ll also both last considerably longer than the filament lamp – the CCFL has a rated life of 25,000 hours, and the LED has a rated-life of nearly 50,000.
5. Task Lighting
Of course, an office is never complete without a proper desk lamp, or adequate task lighting over each work space. Since there are so many different varieties of desk lighting – traditional swing-arm lamps, linear task lighting, puck lights, even table lamps, the energy-efficient changes you can make really depend on your personal preference.
If you have a fixture you already like, a favorite table lamp or reading light, the easiest upgrade could be to simply change out the light bulb for an energy-saving LED or CFL. When dealing with linear lights on the other hand, it may just be easier to change out the entire fixture. Browse our wide selection of energy-efficient under cabinet task lighting to find just what you need.
6. Lighting Controls
Finally, to save even more energy and create an invigorating and convenient atmosphere at the office, upgrade your lighting controls.
For personal offices and conference rooms, use dimmers. These handy switches allow you to control the light levels in the room to keep yourself alert or relaxed. When you dim a light bulb by 25%, you’ll save 20% of the energy you’d normally use to power it, and extend your light bulb’s rated life.

For high traffic areas like kitchens, bathrooms, thoroughfares, closets, or large workrooms, you should put the lights on motion sensors. That way, the lights will come on when you need them, but they won’t stay on when no one’s around, squandering excess energy.

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Sunday, April 28, 2013

WSRM---LEDlights 9 basic knowledgy!




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WSRM---LEDlights 9 basic knowledgy!



Light emitting diodes, or LEDs, are becoming increasingly popular and more high-quality LED lighting products are being manufactured and sold in the marketplace. LED lighting is an attractive alternative to incandescent or fluorescent lighting in both residential and commercial lighting applications because they are very energy-efficient, have very long lives, are very small in size, do not have any re-strike time, can be dimmable, generate relatively little heat, have a slow failure rate, are shock resistant, work well in low temperatures, their light can be easily focused, and they contain no toxic mercury unlike another popular energy-efficient lighting product, the compact fluorescent light bulb (CFL).
Here are 9 things that you should know about LEDlights source:
  1. Colored and White LEDs
    LEDs can be red, green, blue, or amber. The color emitted by an LED is dependent upon the materials used to produce it. For example, a red LED is made from the chemical elements of aluminum, gallium, and arsenic. White LEDs are created by covering a blue LED with a yellow phosphorous coating. A white LED can also be created by using a red, blue, and green LED in close proximity to each other. At this time, there is not an LED that can emit white light. Producing an LED that could emit white light is the "holy grail" of LED light research.
  2. LED Brightness
    A single high power LED can produce about 80 lumens of light. In comparison, a standard 60 watt incandescent light bulb produces about 900 lumens. Thus, a single high power LED is only about 1/11th as bright as a 60 watt incandescent light bulb. In order to produce adequate lighting, therefore, an LED fixture must contain groups of LEDs. However, the future is bright (pun intended) for LEDs. The lumen output of LEDs has almost doubled in the last two years.
  3. LED Color Temperature
    Color temperature is a measure of the color appearance of a light source which helps describe the apparent "warmth" (reddish) or "coolness" (bluish) of that light. Light sources below 3200 Kelvin (3200K) are considered to be "warm;" while those above 4000K are considered to be "cool" light sources. For comparison, a traditional household incandescent light bulb is 2800K. The color temperature of a light source is not related to how hot the light source will get or how much heat is given off by the light. White LEDs vary in color temperature. Some white LEDs can be as "warm" in appearance as 2600K but most white LEDs are slightly "cool" in appearance. This is because most white LEDs are created by putting yellow phosphors over blue LEDs.
  4. LED Color Rendering
    Color rendering index (CRI) is the ability for any light source to render colors accurately. The CRI scale goes from 1 (low pressure sodium) to 100 (the sun). A CRI of 75 is considered to be good, a CRI of 85 is considered to be very good, a CRI of 95 is considered to be excellent, and, of course, a CRI of 100 is considered perfect. LEDs in a warm white color temperature are currently available (as of 2009) with a CRI of 80.
  5. LED Efficacy
    As with all light sources, the efficacy of LEDs is measured in lumens/watt, the amount of light produced by one unit of power. Warm white LEDs produce between 25-44 lumens/watt while cool white LEDs are more efficacious by producing 47-64 lumens/watt. In comparison, the typical household incandescent light bulb creates 10-18 lumens/watt while compact fluorescent light bulbs produce 35-60 lumens/watt.
  6. LED Drivers
    Fluorescent light bulbs require a ballast in order to function. The ballast provides a starting voltageand limits the electrical current to the light bulb. LEDs also require a similar electronic power source. For LEDs, this electronic power source is usually called an LED driver. The LED driver converts line power to the appropriate voltage (usually between two and four volts DC for high-brightness LEDs) and current (typically 200-1000 milliamps or mA), and may also include dimming and/or color correction controls. LED drivers are generally about 85% efficient. Thus, the efficacy of LEDs should be reduced by 15% to account for the LED driver.

  7. LED Heat Generation
    It is a myth that LEDs do not generate heat. In fact, all light sources generate heat and LED lights are no different. Thus, it is important that an LED fixture is well-designed with "heat sinks" to adequately dissipate the heat that is created.

  8. LED Lifespan
    LEDs do not burn out like an incandescent light bulb. Instead they get progressively dimmer over their lifetime until they no longer emit enough light to be useful. An LED is generally considered to be no longer useful when it is emitting only 70% of the original amount of light the LED produced. The time that this takes is often referred to as the rated life of an LED. While some LEDs may have a rated life of 100,000 hours, this is usually only under perfect laboratory conditions. Under real-world conditions most LEDs operating in light fixtures might last up to 60,000 hours. The rated life of an LED is often much less when the LED is operating in a light fixture as opposed to the same LED operating outside of a light fixture due to the buildup of heat inside the fixture.  The typical LED inside of a typical light fixture may have a rated life of 35,000 to 60,000 hours.

  9. Infrared and UV Radiation
    White LEDs do not emit infrared, or heat, radiation like an incandescent light bulb. In addition, white LEDs do not create ultraviolet radiation (UV rays) like a fluorescent light bulb.
Although there has been a lot of media attention given to LEDs, there are still far too many LEDs that are not well-designed. In short, the LED lighting market is still maturing. Research continues to improve LED brightness, efficacy, and the rated life of LEDs at a remarkable pace.

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Saturday, April 27, 2013

WSRM---LED FLEXIBLElights advice!


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WSRM---LED FLEXIBLElights advice!



Constant current LED (light emitting diode) drivers are one option in running LED strips of light; the options depend on LED application as well as the actual structure too.
LEDs have been adopted within the commercial sign industry as well as within domestic and other business setting as a direct result of LED lights have longer life, boasting a smaller ‘carbon footprint’. Their consumptions of less energy also make them a firm favourite.
A higher current can be passed through an LED so that emits a brighter light but the only problem with this is that it tends to ‘over-drive’ the LED.
When an LED has too much current running through it, it produces too much heat; essentially, the life of the LED will be considerably shortened hence defeating the whole object of using LED lighting within the home (and other areas). So that this does not happen a constant current source if the preferred method to ‘drive’ one LED.

More than one LED light

Of course, in most applications light for signage etc. is not supplied by one single LED. A group of LEDs are usually connected together in serial or parallel arrangements creating the desired effects in terms of light intensity, the correct colour and ‘shape’.
Some LED strips come with an on-board, integral constant current regulator although some people add constant current LED drivers as a form of protection so that LEDs on the strip are less prone to voltage variations.
Before you select the right constant current LED drivers, you need to make sure you get the right effect from LED strip – how bright you want the sign, budget constraints as well as the environment it will be operating in. In terms of the environment, this looks at the temperature where the LED strips will be working (indoor or outdoor for example) and how the heat from the LEDs will be dissipated.
So, in your LED strip display the last question to be answered is which driver to use! Constant current LED drivers will avoid the maximum current specified for safe use being exceeded , hence making the LED strip reliable and a constant ‘brightness’ will also be maintained.
If you unsure about selecting the correct constant current LED drivers, then seek advice from a LED lighting specialist such as LED Power Lighting Supplies
.

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Friday, April 26, 2013

WSRM---LEDlights is for free sample ?


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WSRM---LEDlights is for free sample ?

Today i talked with my patient customer from Albania,he take a request to m :" If u are ready to market ur products. U will send some products. Bcos here they don't pay for what the don't have."he means all of the sample is free for him. i do'nt know why he can ask for this request. but actually it's not only from him. a fews guy also take the same request. if u r manufcatuer, how do u answer with this guy ?send the products in free. is' t possible ?if it's only one pcs or a fews kind of lights, it's maybe no problem.but if we send the all of sample to my customer, how it's the cost ?if all of my cusotmer ask m send the sample in free, how about the cost ?i think the true customer will think about it. usually it's in possible to send the sample in free. unless the customer is our old customer and take the long term corporation with us.
As u know, the business is base on the fair and trust , we all shall think about the profit both the two side.if one side no profit in business or take a big risk in business , i think the corporation can'nt be take. we all shall stop it. is't right ?
So business is corporation based on both profit .any one side do'nt want take the profit to himself and do'nt consider other side's profit.
so , for most of our patient customer or people to ask for the free sample, we usually say :sorry , we can'tn .it's our company's rule. hope u can understand it.

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