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Bulbs which use the GU10 fitting (a more recent version of the MR16) run at mains voltage (240 volts). First produced by Havells Sylvania in 1997, the GU10 has quickly overtaken the MR16 in terms of popularity, combining exactly the same high quality light and compact 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 are a more recent version of the standard incandescent bulb. Because of ease of manufacture and availability they are undoubtedly the cheapest from the three technologies. However, they are also the costliest to run and also have the shortest life expectency, meaning the overall cost of the bulb winds up working out often a lot more than the first price paid.

CFLs are a compact form of the fluorescent tubes commonly present in offices. They are more costly to buy than halogen bulbs, but take advantage of a lesser running cost. While manufacturers have overcome the size limitations related to developing a CFL-compatible GU10 Bulb, they still hold a number of drawbacks. The most typical criticisms levied against this kind of bulb is that it creates a "cold" light, it loses a lot of its brightness overtime and that it requires a long time to achieve full brightness after being started up.

Of the three bulbs, CFLs are also probably the most environmentally controversial. Fluorescent based lighting requires a small amount of Mercury vapour as part of its operation. While the amount contained in a CFL is just about enough to pay for the nib of the ball point pen, a microscopic quantity of mercury can cause massive environmental damage. This makes their disposal difficult and potentially dangerous.


LED GU10 are the newest technology on the market and for this reason are the most expensive. However, LED GU10s recoup the majority of this initial cost by lowering lighting bills and lowering the quantity of replacements required. LEDs offer a number of other advantages too, including lower operational temperatures along with a greater option of colours.

Although the price of LED GU10s continue to be high, this prices are 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. Because of this many customers think it is simpler and cheaper to upgrade their lighting system to mains voltage GU10 LED Bulbs.
Topics: GU10 LED
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