Bulbs that use the GU10 fitting (a newer version of the MR16) run at mains voltage (240 volts). First developed by Havells Sylvania in 1997, the GU10 has quickly overtaken the MR16 in terms of popularity, combining the same great quality light little design, while removing the need for a transformer.

GU10 bulbs can be found in three main formats; halogen, CFL (Compact Fluorescent Lamp) and LED (Light Emitting Diode).

Halogen bulbs really are a newer version of the standard incandescent bulb. Because of easy manufacture and availability they're undoubtedly the cheapest of the three technologies. However, they are also the most expensive to run and also have the shortest life expectency, which means the total cost from the bulb ends up working out often a lot more than the first price paid.

CFLs are a compact version of the fluorescent tubes commonly found in offices. They're more expensive to purchase than halogen bulbs, but benefit from a lesser running cost. While manufacturers have overcome the size limitations associated with creating a CFL-compatible GU10 Bulb, they still hold a considerable number of drawbacks. The most typical criticisms levied from this kind of bulb is that it creates a "cold" light, it loses a lot of its brightness overtime which requires a very long time to reach full brightness after being started up.

From the three bulbs, CFLs will also be one of the most environmentally controversial. Fluorescent based lighting requires a small amount of Mercury vapour as a part of its operation. While the amount contained in a CFL is just about enough to cover the nib of the ball point pen, even a microscopic quantity of mercury may cause massive environmental damage. This makes their disposal difficult and very damaging.


LED GU10 are the newest technology available on the market and for this reason are also the priciest. However, LED GU10s recoup the majority of this initial cost by lowering lighting bills and reducing the number of replacements required. LEDs offer many other advantages as well, including lower operational temperatures along with a greater option of colours.

Although the cost of LED GU10s are still high, this price is predicted in the future down soon. When that happens, LEDs will become typically the most popular lighting format available.

Most existing transformers utilized by MR16 spotlights are incompatible with LED technology. For this reason many purchasers find it simpler and cheaper to upgrade their lighting system to mains voltage GU10 LED Bulbs.
Topics: GU10 LED
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