Thursday, April 24, 2014

Applied range of LED string light

With the rapid development of social economy, LED as a powerful tool for advertising and decorative landscaping, has been used more common, which has become a corporate identity promotion and beautify the city indispensable beautiful scenery line.

With the increasing industry products, services competition, how to build a unique publicity image for their corporate image, products, logos to attract the attention of consumers, brand marketing strategy has become a top priority of the work. "Outdoor identification system”, and print, these various image propaganda forms is increasingly which reflects its irreplaceable role. LED light string as high-tech products, which can be widely used on the following fields:

• architecture, landscape, environment, bridges, stadiums and airports, municipal lighting;
• Schools, hospitals, old buildings, churches, and the company's architectural lighting;
• exhibitions, concerts and fashion show event lighting;
• hotels, resorts, restaurants, cruise ships and lighting spa;
• mall, store design, displays and other retail lighting;
• Ground, water features, fountains, swimming pools and spas landscape lighting;
• theater, television studios, film sets, dance and photography stage lighting;
• exhibitions, planetarium, zoo, aquarium and museum exhibit and teaching of lighting;
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LED string lights can be used effectively to enhance any dull spaces or corners. They come in various shapes and sizes and can be made to suit the theme of your party to a great effect. Festivals and occasions have their own favorites and a huge variety to choose from. In fact they will leave you spoilt for choice. The best thing about LED string light is that they are cool to touch. They also provide simpler maneuverability and flexibility. All this make them easier to handle than other lighting options which get heated up fast.

Friday, April 18, 2014

Battery of LED flashlight

There are commonly use flashlight batteries, 1AA (a 5 batteries), 2AA (2 AA batteries), 3AA (3 AA batteries), NO.5 batteries are also divided into alkaline batteries which is often said that the battery cannot be charged (4.5V) and rechargeable NiMH batteries (1.2V).

There is the lithium battery; the voltage is 2.45-4.20V. There are various models, 14500, 16340, 18650 and so on. Many friends feel somewhat dizzy when look at these figures, say how to distinguish? In fact, it is very simple. The model numbers are given for a reason, such as 14500 battery is 14 mm diameter and length 50 mm; 16340 cell diameter is 16 mm, length 34 mm, and so that a 18650 diameter is 18 mm, length 65 mm.

Lithium battery also divided into protection circuit (to prevent overcharge and over discharge circuit) and without, we should all know lithium should not overcharge and over discharge, if the battery is fully charged and still do not get the charger for a long time continue, charge leakage or explosion would occur;

Over discharge is the battery power is totally gone before going to charge, which will cause the battery scrap. that installed a protection circuit will not have this problem, but the drawback is that the volume gets bigger which is bigger than that without protection, increasing about one millimeter circuit (that is to say the upper battery size) in diameter length about 2 mm. Some flashlight makes it somewhat difficult to put the battery which needs to go into slowly groping, but most are easy to put a flashlight to go.

There is the problem of series and parallel, here to talk about the fact we had junior high school physics: the series current is constant while the voltage is 2 times than before; parallel voltage is constant while current is 2 times than before. If your battery is with protection circuit (with anti-overcharge and over discharge function), do not look at the following introduction, the following is mainly for lithium battery protection circuit does not explain: the new battery is not too much;  anty881209wong 140418

When use the battery for the first time, do not charge for too long time, take action according to the charger's instructions. During charging, according to the charge speed, when the color change indicator immediately remove the battery, Do not overcharge, recommended charging time should not exceed 3-5 hours; fully charged, the battery should be removed from the charger;

Thursday, April 3, 2014

Several points of purchasing LED light

Be careful of cheap trap. There is a large price difference between different LED light sources. LED with the same brightness and colors, the price can differ several times. This gap is mainly reflected in the reliability and lumen of LED, appearance and other properties of the above process. Low price LED chip size is small, the electrode is rough, material used (phosphor and glue) is poor. Resistance to electric current, temperature and humidity changes is poor, the light fades is fast, life is short, so the blind pursuit of low-cost may outweigh the benefits.

A clear understanding of the relevant standards, from a security point of view, the product should comply with the relevant international and national standards. Because LED is a new tech product, China lags behind national standards, only provide product qualification testing. So international safety certification (such as GS, CE, UL, etc.) is the measure of the quality of LED lights standard, while there are not many manufacturers have both country and international safety certification and product quality certification. When purchasing, you need to carefully identify the authenticity of the certificate. LED with International safety certification of products, prices are generally higher.

Select the constant current power supply LED lights. The price of LED drive power resistors, capacitors, IC and other components differ very big. The entire power supply used in the design of programs and the reasonableness of the line itself will directly affect the quality of the product. Some drive power is just constant voltage, failed to get constant current, and LED lamps must be constant in order to make ensure the quality and service life. So, when you purchase, this requires extra attention, especially for high-power LED lights.  anty881209wong 140404