Lighting. Sunday , September 16th , 2018 - 21:08:33 PM
LEDs produce light by the process of Electroluminescence. This is the phenomenon where by light is emitted from a material when an electrical current is passed through it. An LED chip is made from a material doped with 'impurities' to create a p-n junction between two types of semiconductors and electron holes. Electrons can only flow one way across the junction and as they do they fill electron holes causing their energy level drops and the release of photons (light).
Each lamp is attached by contacts to the wire and has a staked end which can be pushed into the ground to keep the lamp anchored and secure. Wire can be buried under two or three inches of soil or mulch. Today, a new line of LED landscape lighting lamps are available. LED's last longer, provide bright, white light and are more energy efficient. Transformers, wire and lamp heads can be purchased separately or in a kit which includes wire, transformer, contacts and lamps. Kits come in a variety of wattages and lamp styles and range in cost from $20.00 to $150.00, depending on the size of the transformer, length of wire and number of lamps.
Let's start with LED lighting. It can be extremely effective in the right situation, but there are a couple of things that you need to understand in order to decide whether it's right for you. Firstly, LED lights generally emit a lot less light than the lights that they can replace; to get around this problem the light is concentrated in to a narrow beam. These lights are perfect for highlighting, for shop displays or task lighting. What they generally aren't so good for is lighting large spaces, without careful design you can often end up with bright spots and dark spaces. There are of course exceptions to this, such as some LED tubes (designed to replace fluorescent tubes) which light spaces nicely but these can be relatively expensive. There is also an issue at the moment with reliability, while the life expectancy of LED lights is generally 35,000 to 50,000 hours, as many as 15% fail in early life, even in branded product.
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