Wednesday, 23 April 2008

Metal Halide Information

High pressure discharge lamps or to be precise metal halide lamps combine an enormous amount of light with excellent colour rendering and use an arc instead of a filament. If you compare this type of lamp to a conventional incandescent lamp (GLS) where light is generated through resistance heating of a filament and most of the electrical energy is converted to heat instead of light, the metal halide lamp generates light by passing an electrical current from one electrode to another through a metal vapour to form an arc between the electrodes.

Metal Halide lamps give out more lumens per watt and also give long life. As they have no filament to burn out and will last an average of 6000 hours or two years which is six time the life of an incandescent lamp. This is increased to 9000 hours or three years if used with electronic control gear.

A change in the lamp and ballast construction allows pulse start metal halide lamps to start using a high voltage ignitor in the ballast instead of a starting electrobe (probe) in the lamp. The result is a "white light" system that challenges high pressure sodium's long lamp life, high lumen output and quick start capabilities. This can produce metal halide lamps with 20,000 hours of life or longer.

Megaman have now produced a substitute for metal halide and mercury tungsten blended lamps.
The MEGAMAN® CLUSTERLITE produces formidable illumination with exceptional high lumen maintenance, making it the perfect substitute for metal halide and mercury tungsten blended lamps. With various wattages for you to choose from, the CLUSTERLITE series caters for various commercial and industrial applications with a menu of advantages

For a comprehensive range of metal halide lamps in a variety of styles,
visit http://www.bltdirect.com/ where you can order on line and benefit from special offers.

LED GU10 Technology Latest

One of the most popular light bulb in recent years has been the halogen GU10 originally made by Sylvania. This lamp came on to the market as a genuine replacement for the low voltage dichroic halogen lamp about twelve years ago. Up until that time downlighters required the dichroic lamp and transformer arrangement which was costly, the GU10 was a 240 volt replacement which lasted around 2500 hours and provided a stable halogen light source for kitchens, bathrooms, hallways and commercial display applications. Hundreds of thousands of these are fitted around the UK and until the recent energy saving push were eating electricity by the kilowatt.

The release of the compact fluorescent version started the ball rolling and it wasn't long before a 50 watt equivalent was available using only 11 watts. The development in LED technology has been a little slower however a lamp has been available that is approaching 40 watts but these lamps were still very expensive.

A recent launch of the Envirolight LED GU10 is making an impact on the market this lamp only uses 2.3 watts of electricity and is very reasonably priced at £9.95 + VAT. This lamp has a rated lamp life of 25 years based on 3 hours usage per day. Also this lamp will give you savings of over 90% on electricity running costs.

For a comprehensive range of energy saving light bulbs in a variety of styles, visit http://www.bltdirect.com/ where you can order online and benefit from special offers.

About BLT Direct
BLT (Bulbs, Lamps and Tubes) Direct makes light work of buying light bulbs online in the UK and Europe. They specialise in supplying lamps, light bulbs and fluorescent tubes. Brands include Osram, GE, Sylvania, Omicron, Pro lite, Crompton, Ushio and Philips.