Friday, July 29, 2011

Easiest way to make Led Circuit !!!

Simple LED circuits are not so hard to build. An LED (Light Emitting Diode), is a very low current light source that is safe and durable for use in your project. This article will show you how to make a very simple LED circuit.
The LEDs you purchase online will usually have several important pieces of information written about them, like angle, intensity (mcd), wavelength(nm), power consumption, size.

1. In the first step you must select the types(brightness and color) of leds that you are using and how many leds you want to light up. In this simple circuit you will be in one way limited by the amount of voltage that can be safely provided for your project.

2. Find out how big voltage you will have or need from your power supply, than you should take a look for the diodes voltage specification on the manufacturers site or on the packaging.
In case that you don’t find this information you can estimate:
Blue (430 nm) 4.6 V
White 3.3 V
Blue 3.3 V
True Green 3.3 V
Green 2.2 V
Yellow 2.1 V
Red or Orange 2.0 V

For example if you would like to have 3 White Leds in your simple led circuit, than you will need 3 x 3.3V = 9.9V.
3. In these step we will choose from where will we power up the simple led circuit:
a. DC voltage, where you can use 9V, AA or AAA batteries which are easy to find, cheap and you can than move around with your led circuit.
b. AC voltage, from where you can get constant power and the simplest way is to use a wall plug. But first you must cut the end of the plug and using a multimeter, you must see which is the negative and positive wire.
AC voltage may even be designed in the circuit. AC will only drive the LED half of the time since the voltage travels in waves. A full-wave bridge rectifier can be used to fully power LEDs. This is fundamentally what the wall wart is doing for you.
You must find a power supply bigger than the calculated voltage (>9.9V) and if you are driving a big number of leds than current can be also important.

4. LED's cannot be connected directly to the battery or power supply. The LED will be instantly destroyed because the current is too big. The current power must be reduced. The simplest way to do this is by using a resistor. Calculate the LED resistor value with the following formula:

LED Resistor Value, R=(supply voltage - LED voltage) / LED current

Supply voltage - The voltage obtained from a power source for operation of a circuit
Led voltage - look at step 2
LED current - is 20 mA (this is a typical value if not specified else by the manufacturer)

If the resistor value is not available, then pick the nearest greater standard resistor value. In case you require to increase the battery life you can select a higher resistor value to reduce current. The reduced current will lead to a dimmer LED.

5. You can soldier the wires directly together, use crimp connectors, or use a tiny circuit board. Choose the best technique based on the size of your project.

6. The final step is to mount the LEDs in your project. Radio Shack and others sellers sell plastic or chrome LED holders that make a professional looking mount easy. You can add momentary push buttons or on/off switches to your simple LED circuits.

Building a simple LED circuit is an easy project.

Thursday, July 28, 2011

Why LED tube light are future over traditional fluorescent tube light ?

LED Tube Lights are sometimes erroneously called LED fluorescent tubes. An LED tube light is actually an LED bulb that is designed to resemble a fluorescent tube light in its dimensions and fixture options. The similarities finish with the shape.

These type of lights are based on innovative solid-state lighting know-how while fluorescent tubes are powered by a know-how that is at least a generation elderly. LEDs have taken advantage of the phosphor know-how developed to help improve the performance of fluorescent tubes and have successfully leapfrogged several years worth of development that goes in to improving any lighting know-how. Today LED tube lights deliver equal or better lighting performance with only a fraction of the energy consumption of the traditional fluorescent tube lights.

1. Energy-saving, the brightness of LED tube light is same as that of traditional fluorescent tube light; it can save more than 70% energy than fluorescent tube.

2. Long life time, it is more than 50,000 hours, no maintenance, and can save labor cost.

3. Environment friendly, LED tube light will no ultraviolet and infrared radiation, no mercury pollution and other poisonous materials (when the fluorescent tube break, it will release mercury which is harmful to human health). And less heat release; old fluorescent tube can be used again.

4. No flash, start fast, is the best light source to protect human eyes.

5. No noisy, because LED tube light don’t need ballast and starter.

6. Solid light source, easy to be shipped and prevent vibration; PC material is not easy to be broke and pressed.

7. Wide application, can be used in office building, factory, shopping mall, school, public area and home lighting and decoration.

8. No mosquito and other bugs (on the contrary, when fluorescent tube is working, it release out ultraviolet and attract mosquito come), but LED tube will not give out ultraviolet to attract mosquito, this ensure clear and comfortable environment.

9. Rich color, can make LED tube at different color to meet different requirements.

10. Broad usage, the shape and size of LED tube light is same as fluorescent tube, people can use LED tube to replace fluorescent tube directly.

Tuesday, July 26, 2011

Led-World Exclusive - Energy Star label for Toshiba’s innovative LED lamps

Date Announced: 26 Jul 2011

Toshiba International Corporation – Toshiba International Corporation announced today that twenty of its long-lasting, high quality, energy-efficient LED lamps have received the US Environmental Protection Agency (EPA) Energy Star® label. An Energy Star qualified LED lamp uses up to 75% less energy and lasts at least 15 times longer than comparable incandescent lighting.

The Toshiba lamps listed on the Energy Star certified product list include select models of the MR16, PAR 20, PAR 30, and PAR 38 product offering. Additional Toshiba products are currently undergoing Energy Star testing and will be certified in the near future.

“The Energy Star program looks not only at the energy efficiency of a product but also the light quality, which needs to remain consistent over time,” said Ken Honeycutt, Senior Vice President and Chief Venture Executive, Toshiba International Corporation LED Lighting Systems Division. “At Toshiba, we are very proud to have earned the Energy Star label and remain committed to delivering the highest quality LED lighting products.”

To qualify for Energy Star, LED lighting products must pass a variety of tests to prove that the products will display the following characteristics:

• Brightness is equal to or greater than existing lighting technologies • Light output remains constant over time • Excellent color quality • Efficiency is as good as or better than fluorescent lighting

In a bold move demonstrating the company’s commitment to helping make LED technology the future of lighting, Toshiba abandoned production of incandescent lamps in March 2010. Toshiba is the first major lighting manufacturer to proactively discontinue the production of incandescent lamps.

While Toshiba LED Lighting is relatively new to North America, Toshiba is one of the largest lighting companies and LED lamp manufacturers in the world. The first product Toshiba ever produced was an incandescent light bulb in 1890, and since then the company has been a leader in lighting fixtures and lamps in Japan.

About Energy Star

Energy Star was started by EPA in 1992 as a market-based partnership to reduce greenhouse gas emissions through energy efficiency. Today, the Energy Star label can be found on more than 60 different kinds of products as well as new homes and commercial and industrial buildings that meet strict energy-efficiency specifications set by EPA. Last year alone, with the help of Energy Star, Americans saved approximately $18 billion on their energy bills while preventing greenhouse gas emissions equivalent to the annual emissions of 33 million vehicles.

About Toshiba International Corporation

Toshiba International Corporation (TIC) is a Toshiba America Inc. (TAI) Group Company, a wholly owned subsidiary of Toshiba Corporation. TIC is headquartered in Houston, Texas and employs approximately 1,100 people. TIC provides application solutions to a wide range of industries including lighting systems, industrial, power systems, and transmission and distribution systems. For more information about TIC, please visit

About Toshiba International Corporation’s LED Lighting Systems Division Toshiba International Corporation’s LED Lighting Systems Division provides the North American market with a variety of high‐efficiency LED products. Drawing upon Toshiba’s 120‐year heritage of lighting innovations in Japan and world‐class electronic and semi-conductor technologies, The LED Lighting Systems Division is emerging as a leader in solid state lighting. The LED Lighting Systems Division is committed to providing lighting solutions that enhance the quality of life and meet the diverse needs of its customers. Further information is also available online at

Friday, July 22, 2011

Led-World Exclusive Comparison - LED TV vs LCD TV

When buying a TV, you might ask what is the best view, an LED or LCD TV. LED TV With the increasingly widespread, it is important to know what could be better to buy a TV LED.

When it comes to buying new TVs, the only time you should now have an LCD TV is that if you are buying a TV with a budget or can not find a TV LED on the size you need. Other TV shows are much cheaper LED TVs, but the price difference is down and soon find TVs LED to be so cheap.

Price aside, televisions LEDs have many advantages over LCD. They have a much better contrast ratio and black levels, better color accuracy, and power consumption. The only thing is to wait and see how long you can last TV LED compared to LCD TVs. This can not be determined yet because the LEDs are new televisions.

The contrast ratio of reason and black levels are much better on these sets because they use technology that can control and adjust the backlight. LCD TVs, the screen is to block the light turning the glass LCD. This ends up causing the television to have a contrast ratio of just less darkening.

When it comes to producing better color accuracy, LED backlit color TV dominates other TV. Color backlight allows the TV to produce very realistic colors. However, some TVs use white LED backlight, which is not much of an improvement in LCD televisions.

TV LEDs also have a better viewing angle. This is very important as you can watch TV in a wider angle. Most TVs have suffered a lot when it comes to viewing angles. Usually does not work so well when you go beyond 30 degrees off center. However, LED TV viewing angles are fantastic, and are almost as good as plasma TVs.

Energy consumption is very important because you can save money in the long term. TV LEDs have a slight improvement over LCD TVs when it comes to energy consumption, and near the power consumption of plasma TVs. However, this improvement in energy consumption is only true for edge-lit TVs, rather than local regulations LED TV.

When it comes to buying the TV, it is advisable to get a TV LED, since it seems to have many advantages over most LCD rivals. With advantages such as energy consumption, better viewing angles, contrast ratio and color accuracy, you can not go wrong with a TV LED

Thursday, July 14, 2011

2012 Peugeot 508 with its distinctive LED lights visible day and night

The Peugeot 508 RXH become one of the world’s most fuel-efficient vehicles off the road when it goes on sale in Europe in the second quarter of 2012. Peugeot Automobiles Australia spokesman Scott Williams said the local distributor was “actively considering” the 508 RXH to Australia, Australia and his colleague Richard Grant Peugeot repeated his enthusiasm. After the launch of the sedan and 508 SW in the spring of 2011, acclaimed for its elegant style, his presence and high quality construction and attention to detail, RXH 508 again raises the profile of all Peugeot strengthen its technological leadership.

His posture and his specific design immediately put it on the road worldwide. Unique, exquisite, high, increased, is also distinguished by a unique visual signature, with its distinctive LED lights visible day and night, giving an impression of ‘lions’ three vertical grip on each side of your grill ‘floating’ style What is even more impressive. To enhance its unique character, the benefits within 508 RXH special features with different colors and luxurious materials such as premium quality interior and upholstery. Aspects covered will also be equipped with a luxurious range of technologies for the Peugeot 508 RXH. this model will be equipped with Keyless Go system & Open, electric front seats, head-up display, 18 “wheels, panoramic glass roof black, black acoustic laminated side windows and cutting-edge audio and satellite navigation units.

Outside Peugeot 508 2012 RXH go with three vertical stripes on the girl LED on each side to make it more like the futuristic car. In the foot, this car will be equipped with 18 “wheels, and another feature will be added, such as panoramic sunroof and Head Up Display. RXH The 508 can operate in electric-only mode, while Peugeot has not revealed the vehicle ‘s “zero-emissions ” range. The French carmaker said RXH 508 consumes less than 4.2 liters of diesel per 100 km (56 mpg U.S.) in combined cycle and emits 109 g / km of CO2. Peugeot 508, 2012 RXH diesel-electric hybrid can operate in electric mode only then, however, the Peugeot did not reveal the driving range yet.

Peugot 508 RXH says consumes less than 4.2 liters of diesel per 100 km on the combined cycle, which is the equivalent of 56 miles per gallon U.S. Equipped with the 2.0 l HDi FAP HYbrid4 drive train, the world’s first full diesel -electric hybrid engine, the 508 extends RXH driving pleasure and freedom to travel anywhere on all roads. With a maximum power of 147 kW (200 hp), four-wheel drive and a maximum torque of 450 Nm, 508 RXH designed to meet all uses in a variety of conditions. It also opens new perspectives in the segment, offering a 100% electric ZEV mode, ideal for city driving and to reduce consumption in the combined cycle of 4.2 l/100 km with CO2 emissions of 109 * g / km.

LED Lighting: Public Transportation Vehicles Market Forecast (2010-2017)

Mass-Transit Vehicles. According to the ElectroniCast report, the global consumption quantity (unit rc helicopter and car market place volume) of LED-based lamps/devices in public transportation vehicles reached 17.0 million units worldwide in 2010 (a 22% increase over 2009).

For the purposes of this study, ElectroniCast defines public transportation (public-transit / mass-transit) as a shared passenger transportation service, which is available for use by the general public. Public transportation vehicles, included in this study, are listed below. Note: aircraft and taxis are not included in this analysis. The LED lighting public transportation vehicles global market is segmented into the following vehicle (type) categories:

• Bus • Rail and Rapid Transit Vehicles o Light-Rail, Tram/Trolley/Streetcar o Rapid Transit/Metro and Subway/Underground o High-Speed, Commuter/Intercity and Long-Distance • Ferries/Watercraft

The market forecast is also segmented into the following product-type:

• LED Linear Lamps (Tubes) • LED-based Back Light Unit (BLU) Bars for LCD Display Screens • LED Signage/Destination Sign Board Modules • Other/Miscellaneous LED Lamps and Luminaries

� aston martin �Market analysis and technology forecasting are complex tasks. Any predictions of the shape and trends of technology and economic movement start from the notion that the germ of what will be important tomorrow is present, although smaller or larger or in a different form, in our environment today. However, taking as a basis for a prediction the assumptions of current, conventional belief creates a set of preconceived notions that can lead to serious mistakes. ElectroniCast, instead, looks to the basic driving forces," said Jeff D. Montgomery, chairman and founder of ElectroniCast Consultants.

� auto part �ElectroniCast then considers customer expectations of near term growth in their application, plus forecasted economic payback of investment, technology trends and changes in government regulations and funding/tax-break legislation/rules in each geographical region, to derive estimated growth rates of quantity and price of each product subset in each application. These forecasted growth rates are combined with the estimated baseline data to obtain the long-range forecasts at the lowest detailed level of each product and application. In this ElectroniCast report, we have covered these issues, by providing information on technology, product supplies, overviews of modes of public transportation, economic and government actions, and so on," Montgomery added.

According to Electronicast, in 2010 the quantity (volume) of LED-based lamps/devices used in public transportation vehicles reached 17.0 million units. During the 2010-2017 timeline, ElectroniCast forecasts the quantity consumption will grow at an average annual rate of 28.5 percent, reaching 92.2 million units in 2017 (see Figure). The market forecast data in the ElectroniCast report refers to consumption for a particular calendar year; therefore, this data is not cumulative data.

The Asia Pacific region (APAC) American region is forecast to maintain the lead in relative market share throughout the forecast period; however growing at a slightly slower pace than the EMEA region. In general, the EMEA region (Europe, Middle East and Africa countries) has been a bit slower to embrace some of the LED lighting solutions versus other regions; however, the trend is changing and the EMEA consumption is set to increase at a steady pace.

The America region, especially the United States, loves the automobile with one occupant per car during the commuting process. However, pushed by many ecological concerns, economical pressures and other factors, the c ferrari all for public transportation is considered an option for some commuters. The America region has a relatively high LED product take-rate per vehicle, especially in the United States and Canada. The America region is forecast to maintain strong growth, especially with the assistance of the U.S. Department of Energy green-tech stimulus funding and other programs that are supportive of LED-based lighting solutions. Also, Latin America, with an emerging modernization of public transit in the bus category, will provide new opportunities for LED producers throughout the forecast period.

This 559-page market forecast report is available immediately from ElectroniCast Consultants. For detailed information on this or other services provided by ElectroniCast, please contact Theresa Hosking, Marketing/Sales; (Telephone/USA: 707/275-9397)

ElectroniCast Consultants – specializes in forecasting trends in technology forecasting, markets and applications forecasting, strategic planning and consulting. ElectroniCast Consultants, as a technology-based independent forecasting firm, serves industrial companies, trade associations, government agencies, communications and manufacturing companies, as well as the investment/financial community. Reduction of the risk of major investment decisions is the main benefit provided. ElectroniCast Consultants' goal is to understand the challenges and opportunities facing clients and to provide timely, accurate information for strategic planning.

According to ElectroniCast, the annual global consumption quantity (unit volume) of LED-based lamps/devices in public transportation vehicles is forecast to increase from 17 million units last year in 2010 to 98.2 million units in the year 2017.

LED Lamps/Devices Used in Public Transportation Vehicles Global Consumption Quantity/Volume Market Forecast (Source: ElectroniCast Consultants)