2012年1月16日星期一

How to Test a Len's Sharpness

A sharp lens can make the difference between a quality exposure and amateur work. There are many different aspects that can affect a photograph, including lens speed, minimum focus distance, type of lens elements, lens weight and stabilization. For many photographers, the first aspect for evaluation is the sharpness, or contrast, of the exposure. You can discover how sharp your lens is by setting up a simple test at home and trying different options.
1Secure a piece of newspaper to a wall with scotch tape.
2Illuminate the paper with two high power lights, such as LED flood lights. Direct the light to illuminate both sides of the paper.
3Place your camera on a tripod. Make the appropriate exposure with the lens auto focus.
4Open the lens to the widest aperture, or the smallest number setting. Take a picture.
5Make an exposure for each aperture, until the lens is at its smallest opening.
6Examine the results of each aperture, looking at the sharpness of the center of the frame versus the edge of the frame. You are paying particular attention to the sharpness of the text.

Marco Melandri Trains with Husky TC 250

BMW Motorrad factory rider Marco Melandri (ITA) still feels the need for speed on two wheels, even during the winter break from the FIM Superbike World Championship. His preparation programme for the 2012 season includes off-road training sessions on a Husqvarna TC 250. In order to be fit for his World Championship outings on the BMW S1000RR, Melandri can regularly be found on the Husqvarna 250cc Motocross bike.
“I ride a lot, almost every week,” says Melandri. “I like riding with friends, mainly just to have fun. We find nice routes, enjoy the views and stop somewhere for lunch. I really enjoy riding the bike. I love it. It is perfect for me – it is easy to ride. I also like the fact that it does not have a kick-starter, but an electric start, as I am quite small.”
Off road motorcycle tours on the Husqvarna TC 250 are more than just a pleasant leisure activity for Melandri: they also play an important role in his preparations for the Superbike World Championship. “It is the best way to train my concentration,” Melandri explains. “In the gym you can chat with other people or think about other things. On a bike, however, you have to remain focussed. While the test ban is in place during the winter, riding an off-road bike is the best opportunity to practice this.”
Away from off-road riding, Melandri has resumed his intensive fitness regime following a short Christmas break. “Let the season begin, I am ready,” says the Italian. The first races of 2012 will be held in Phillip Island, Australia, on 26th February. Team BMW Motorrad Motorsport will also be testing at the same venue in the week running up to the season’s curtain-raiser.
Husqvarna Motorcycles is a 100 per cent owned subsidiary of the BMW Group and oversees the off-road motorcycle sector within the group. In 2011, Husqvarna launched a product offensive in the on-road sector. Having won 82 World Championship titles, Husqvarna is already one of the most successful off-road motorcycle constructors in the world.

2012年1月13日星期五

Mouser – Versatile LED drivers serve backlighting

Atmel LED Drivers are system-centric, mixed-signal LED driver ICs which are now available from Mouser stock.
The devices serve the broad-based and rapidly growing backlighting and solid-state lighting markets with applications that include LCD TVs, PC monitors, specialty panels (industrial, military, medical, avionics, etc.), and general illumination.
The drivers utilize a proprietary and patented combination of analog and digital circuit techniques. Additionally, by delivering a system-centric approach, these advanced devices provide solutions for local and global dimming, power management, signal conditioning, and smart interfacing. This allows electronic equipment manufacturers to significantly enhance product features, while improving power efficiency, reliability, and cost/performance.

Are HID Kits Legal?

High-intensity discharge headlights emit a brighter white or bluish light than halogen lights. HIDs are legal only on vehicles with original equipment manufacturer systems. After-market kits used to install HID systems on other vehicles are illegal in all 50 states.
Design
Halogen headlights have a metal filament. When electrically charged, the filament heats up until it glows. HID lights have no filament. They are filled with xenon gas and equipped with a ballast, which converts a car's normal DC voltage to higher AC current. This creates an arc that ignites the gas and makes it glow.
Safety Concerns
HIDs installed in headlight systems designed for halogen lights produce substantially different beam patterns. They are difficult to aim, and emit light that exceeds the intensity allowed under the U.S. Department of Transportation's Federal Motor Vehicle Safety Standards.
Regulations
Under federal regulation FMVSS 108, replacement lights must conform to the specifications for the original equipment manufacturer's system they will be installed in. The National Highway Transportation Safety Administration has determined that HID conversion kits can never be designed to meet this standard. The NHTSA declared HID kit illegal in 2004.

How to Buy Street Bikes

Buying a street bike is a difficult decision. There are countless models, sizes and options available to riders. Unless you are already an expert, it can feel overwhelming. However, there are ways to get closer to expert status.
1 Determine what kind of rider you are. Think about how you are using your street bike or plan to use it. This helps you narrow down your two wheeler search. If you commute to work, if you bike for pleasure or even if you bike for work as a bike messenger, these issues all contribute to the type of bike you need.
2 Set financial limitations on your street bike shopping. Street bikes come in so many styles and options that this is often one of the best ways to help decide.
3 Find a bike that fits your height as a rider. As a general rule, the crossbar should be a few inches below your rear end, if you are standing over the bike. However, some more advanced frames have different specifications, depending on your riding skill level and specific body type.
4 Decide how many gears you are interested in having. If you ride for pleasure and live in a flat area, a one-speed bike is a great option. If you ride daily and have some hills, a three-speed is a terrific choice. If you have long commutes and differing terrain, a 10-speed bike will give you the most adaptability.
5 Test ride your bike before purchasing. This is the best way to know whether this bike is for you. If you don't feel comfortable on the ride, test another.
6 Consider brands like Gary Fisher, GT, Giant, Scott and Dawes. Each brand has unique features and colors that may be appealing to you.
For more information about their products, visit their website:

Company name:Chongqing Yujue Electrical-Mechanical Co., Ltd
Contact us:Phone: 86-23-66224319
Fax:86-23-66236997
Web site:http://www.yujuemotor.com/
The main products: Cheap Off-Road Motorcycle Latest Street Bike  

2012年1月5日星期四

Advantages Of Using LED Downlight Silver

You’ve probably used smd LED tube already, but you may didn’t recognize it. They are contained in everyday tools such as TVs, different watches, remote settings, DVD players, and calculators. Right now LED light bulbs are finding their purpose into homes, due mostly to ascending energy expenditures. Irrespective of its ubiquity, however, LED light bulbs meant for general home illumination are still fairly new.
Most of the American homes have traditional incandescent and fluorescent bulbs, and pay about 25% of total power consumption on lighting alone. As emphasized by the US Department of Energy, the introduction of new lighting technologies may reduce lighting electricity use in family homes by 50% to 75%. A greener and more cost-effective approach is to use LED light bulbs, the most recent advancement in home illumination.
LED or light-emitting diode is a type of semiconductor. LED bulbs have been first commercially offered in laboratory test equipments, and only soon after in radios and satellite mobile phones. The main designs of LED lights are little, high powered, and custom designed.
Numerous advantages comes with using LED downlight silver. In comparison with fluorescent and incandescent light bulbs, LED bulbs just about 1/10 less power consumption. LEDs also keep going 50 times longer as opposed to standard bulbs, or give 50,000 hours’ use compared to 10,000 hours for CFLs or compact fluorescent lighting. LEDs are much more compact in size and are more durable. Because they are made from solid state equipment, LEDs are hard to deteriorate, unlike breakable CFLs and incandescent bulbs.
Despite the fact that LED bulbs for residence lighting are relatively too expensive, you can lay aside dollars eventually because of greatly reduced maintenance costs (a CFL bulb costs almost $2, while an identical LED Street Lights can cost up to $100). LEDs also have the advantage over CFLs by not using mercury.
A plethora of LED light bulb makes and versions are available in the market today, so how do you know which to buy? Here are some things to consider to bear in mind when shopping for LED bulbs:
Wattage. LED light sources use much less electricity than its fluorescent and incandescent lighting bulbs. It implies LEDs give more light with reduced wattage. Just to illustrate, a 12.5 Watt LED bulb is equivalent to a 60W incandescent bulb. The packaging lists the brightness level.
Warm vs Cool Light. LED lamps are now accessible in many colors. Decorated lights look festive and brighten up a deck. For general home lighting, “cool” whitened LED bulbs are wonderful for task lighting. “Warm” LED candle light are well-matched for accent lights.
Dimming Capabilities. Unlike compact fluorescents, LED bulbs are usually dimmable. These are excellent for the bedroom, hallways, or wherever you want softer or maybe mood lighting.
Base Type. Pin and the standard outlet are two forms of LED light bulb bases. Pick a base type depending on intended use.
Quality. You can perhaps find less costly LED light bulbs on websites or discount shops, but it’s advisable to buy from well-established dealers to ensure your LED bulbs last longer. High quality LED bulbs make use of high quality chips and materials.

Several motorcycle parts were stolen

An investigation into an attempted burglary on Longridge Road led to the arrest of 25 year old Kyle Lucas of Snow Hill.? Wicomico Sheriff’s deputies say several cub motorcycle parts were taken.? Lucas is charged with attempted burglary, theft and other offenses.
Incident: Burglary
Date of Incident: 8 October 2011
Location: Longridge Rd., Parsonsburg, MD
Suspect: Kyle Lucas, 25, Snow Hill, MD
Narrative: On 8 October 2011, a deputy from the Wicomico County Sheriff’s Office began an investigation into an attempted burglary that occurred on Longridge Road. Several cub motorcycle parts were stolen in that incident. The investigation led to the arrest of the suspect, Kyle Lucas.
The deputy transported Lucas to the Central Booking Unit where he was processed and taken in front of the District Court Commissioner. After an initial appearance, the Commissioner placed a $25,000 bond on Lucas.

How to buy replacement LED bulbs

LED lightbulbs are preferred over standard lightbulbs because they last longer and offer a brighter light output. LED light bulbs can be used in floodlights, spotlights, color-changing light fixtures and other light fixtures at a significantly lower cost than incandescent, compact fluorescent and halogen bulbs. You can purchase replacement LED bulbs both online and offline.
1 Find out what make and model your LED light fixture is currently using. You will need to know the wattage, lumen and type of light fixture. You may be able to find this information in the manual of your light fixture. If you can find the SKU number for the existing LED bulb, you will be able to find a replacement even faster.
2 Contact your local hardware store. Ask them if they carry the SKU or brand/type of LED downlight you need. You may need to pick up and pay for the bulb in person.
3 Visit the nearest big-box hardware center. Retail centers such as Home Depot, ACE Hardware, Wal-Mart and Target offer a wide selection of LED replacement light bulbs. Ask for the specific brand or type you are looking for to purchase your replacement.
4 Place an order for replacement LED lightbulbs online. Visit Best Home LED Lighting to locate your LED bulb by make or SKU number. The company ships nationwide and may extend a free shipping offer based on the value of your total order.
5 Purchase LED bulbs from LEDtronics.com. This company offers an extensive selection of miniature LED lamp bulbs, architectural LED lights, automotive LED lights and discrete LEDs for light pipes.

Parts of a Street Bike

Street bike, also known as naked bikes, are a very basic type of motorcycle. They resemble dirt bikes but feature parts designed for street driving rather than off-road use. Street bikes also feature smaller engines and fewer accessories than sport bikes or long-distance cruisers, making them among the least-expensive motorcycle options.
Frame
The center of a street bike is its frame. Motorcycle frames are made from welded metal, and street bikes use lightweight construction to achieve a strong frame at a low cost. A street bike's frame includes connecting points for many of its other parts, including the seat, front forks, handlebars and engine mount.
Engine
Street bikes usually employ a dual-cylinder internal combustion gasoline engine. A four-stroke engine is the most common configuration, operating much like a typical car engine with intake, compression, ignition and exhaust cycles. The engine uses one spark plug for each cylinder and two or more valves per cylinder for intake and exhaust. Street bikes may feature either an air-cooled engine, with fins on its cylinders to create more surface area and keep the engine cool while driving, or liquid-cooled engines, with a front radiator and pump system like that found in a car.
Fuel Tank
The fuel tank on a street bike is positioned directly above the engine, in front of the rider. Street bikes feature small fuel tanks that may only hold a few gallons. However, this may give the rider an even greater effective range than the rider of a larger, heavier bike with a larger fuel tank but poorer fuel economy.
Wheels
Street bikes use wheels in the 15-inch to 18-inch range. Wheels may be forged, cast or spoked, and carry rubber tires with rubber inner tubes and a mild tread pattern for on-road driving. So-called hybrid street bikes may come with a more aggressive tread pattern for off-road performance. Each wheel includes a disc brake with a single caliper for slowing the bike.
Seat
A street bike's saddle is usually designed for a single rider, though dual-rider saddles are also available. The seat-and-handlebar configuration place the rider in an upright position with foot pegs directly below the seat. Street-bike seats may include a storage space for tools and often conceal the battery, which powers the onboard electrical system.
Driveline
A street bike uses a chain for its final drive, and a manual transmission with a pedal shifter and handlebar clutch lever. The transmission may include anywhere between three and six gears. The chain drive attaches the transmission, located near the center of the frame, to the rear wheel, which is the drive wheel.
Controls
A street-bike rider has access to a number of controls. These include a foot brake, a hand brake, the pedal shifter and hand clutch. Street bikes also include switches for engaging the headlight and turn signals. Some models may come equipped with a radio, but such amenities are not common on street bikes.

2012年1月3日星期二

How to convert LED Light for Christmas

In the month leading up to Christmas each year, you likely have a tradition of digging the decorations out of the basement or attic and beginning to make your home more festive. If you've used traditional Christmas lights for years, you'll have to begin the arduous task of determining which bulbs have burned out and need replacing. Perhaps it's time you converted your Christmas decorations to LED bulbs, which offer a multitude of benefits.
1 Determine how many strands, colors and varieties of strings of incandescent bulbs you'll need to replace. Make a list of them.
2 Visit a store that sells LED lights. Replace your old, incandescent lights with LED lighting by purchasing a number of strands, in the appropriate colors. LED lights come in virtually every color and are now made for Christmas decorations on strands that you can hang from the tree, on banisters and almost anywhere else your imagination takes you.
3 Donate your old, incandescent Christmas lights to a local charity or second-hand store to help someone less fortunate afford Christmas lights. If your lights are so old that they are damaged and do not function well, throw them away.
4 Decorate your home with your new, LED Christmas lights by mounting them just as you would incandescent lights. LED Christmas lights are built for both internal and external use, so in addition to decorating the interior of your home, you may wish to add LED light outside, too. Once you've finished, you've converted your home to LED lamp for Christmas, meaning you may never have to replace your Christmas lighting again.

Rear window LED panel

People use all sorts of ways of expressing their feelings and emotions when behind the wheel. However, the automotive industry hasn’t exactly paid attention to these kind of needs over the years, so when you buy a car, you don’t get any communication tools, other than the barbarian lights and horn.
However, one motorist called Gandeep Singh has come up with a solution that will help you rely on more than just your fingers for non-verbal, in-car communication.
The man has fitted his VW Polo with a 40;x16; LED panel, placed on the back window, which he uses for sending messages to others. As you can see in the adjacent video, the toy currently uses a set of limited standard messages, which are extremely politically correct. However, he is working on a Bluetooth phone connection, which could allow him to display whatever he wants. We feel some road rage messages coming.

Honda Mulls Sourcing Motorcycle

TOKYO -- Honda Motor Co. is mulling sourcing parts supplies from Japan for automobile production in Thailand, after severe flooding caused a supply chain disruption, a company spokesman said Wednesday.
The Japanese automaker has already decided to halt operations at its automobile and cub motorcycle plants in Thailand until Friday.
As Honda and its subcontractors are providing parts not only to Honda in Thailand but also to India, Honda is considering shifting sourcing of parts for production in India to imports from Japan and other countries, the spokesman said.
The spokesman said the company is still looking into the impact that the Thai flooding has had on production and the status of part inventories for production in India, although it doesn't expect any immediate negative impact.
The spokesman said Honda's local content in India stands at 80%-90%, so that automotive parts shipped from Thailand are only a portion of the 10%-20% of parts used in vehicles it is manufacturing in India. But he said the company would face an inability to roll out vehicles even if only one part is not available.

How to Install Off Road Lights

Installing off road motorcycle lights is a great way to improve what you can see in your rig on the trail. They can go just about anywhere--in the bumper, on the roll bar, on a roof rack. However, there are incorrect ways to hook them up to electricity that can make them dangerous.
1 Find the area you wish to mount the light, and drill a hole to accomodate the bolt.
2 Mount the light securely in the hole with the supplied nut.
3 Connect the red and black wires to a toggle switch, mounted somewhere in the passenger compartment. Route them safely, making sure they don't rub on things, including each other.
4 Connect the black and red wires from the toggle switch to the battery--DO NOT mix up the polarity here. Red is POSITIVE, black NEGATIVE.
5 Turn the lights on, and aim them using a garage door, wall or equally flat surface. Once they are where you want them, tighten everything up and away you go.
Just go to the company:

Company name:Chongqing Yujue Electrical-Mechanical Co., Ltd
Contact us:Phone: 86-23-66224319
Fax:86-23-66236997
Web site:http://www.yujuemotor.com/
The main products: Cheap Off-Road Motorcycle Latest Street Bike