LED Lighting Reactions
They are as follows:
When an electric current is conducted between two different crystals, light and heat are produced. Light Emitting Diodes are built on this foundation (LED).
However, if too much heat is generated, the crystals will break down, limiting the power of an LED light and allowing it to function properly only below a temperature of approximately 40 degrees Celsius.
LED Lights with more power will be available by the end of 2011.
More light and heat are produced when the current is raised, but present technology cannot remove infinite heat, limiting the power of LED chips.
Unless mechanical cooling, such as a fan, is employed, the maximum wattage for replacement bulbs such as an MR16 is 6 or 7 watts.
A light fitting may be built to utilize several LEDs or more complex heat sinks to keep the LED chips cool to obtain more power. The brightest downlight we provide is 25 watts.
The lifespan of an LED
LED chips are made by just a few firms, including Cree, Osram, Phillips, and others, and most LED light fittings and bulbs utilize chips from these businesses.
The chip makers anticipate a life of up to 100,000 hours, however, the current supplied to the semiconductor drastically reduces this.
350 milliAmps may last 50,000 hours, while larger wattage devices may use 900 milliAmps, reducing the lifespan to 20,000 hours. The light output will theoretically decline to an undesirable level after this period, but unless the chip is destroyed, it will continue to produce light.
Brightness
This is where the LED tale gets a little muddled. The quantity of light emitted by a source is measured in Lumens, while the amount of light striking a surface is measured in Lux and is dependent on the distance between the light source and the surface.
The present LED chips can convert 1 watt of light into approximately 80 lumens. The power lost in the driver is often added to the lamp's rating, indicating that not all of the watts flowing into the lamp are converted to light. For example, a "6 watt" light may barely reach the crystal with 5 watts. Because this isn't always the case, the stated lumens are a more trustworthy indicator of the lamp's brightness.
MR16 halogen replacement lights, for example, provide between 200 and 450 lumens. A 50-watt halogen light, by contrast, produces 950 lumens. So, regardless of how it's packaged, switching from 50-watt halogen to 6 watts LED bulbs won't provide the same amount of light in a space.
If the light output is concentrated into a tight beam, the LED lamp can create an area with the same Lux as a halogen, thus the claims that a 3 watt LED can replace a 50-watt halogen are somewhat accurate if you just need a one-meter spot of light.
LEDs are used.
These are particularly beneficial in commercial settings, where the expensive initial investment is compensated by the elimination of the expense of replacing lights, and high hours consumption results in significant energy savings. The payback period may be very short.
LEDs are ideal for use in ambient lighting and landscape lighting in the house. They're perfect for stairwells, hallways, and creating ambiance in lounges and TV rooms. The light quality is said to be better than that of halogen lights. The installation of LED lights in conventional garden fittings may drastically decrease the amount of energy used. A garden may be lighted with less than 100 watts, allowing the garden or drive lights to be kept on all night using just one old-style bulb. Because the 12-volt wire wrapped transformers provide the proper voltage, 5 watts LED lights may be installed straight into existing fixtures. More power would overheat the bulbs in the waterproof fittings and cause them to fail, therefore only 5 watts is advised.
