Low voltage halogen spotlights use the following caps: In addition to display lighting, low voltage halogen spotlights are common in downlights and wire lighting systems. One advantage of low-voltage spotlights is their sharper, brighter quality of light over their mains-voltage counterparts. Because of this, a dichroic spotlight is useful for displaying heat-sensitive objects like food, artworks, or textiles. Low-voltage spotlights are available with an aluminium-coated reflector to project infrared heat forwards, or with a dichroic filter that allows infrared heat to pass through the back of the lamp. The massively popular MR16 is universally loved, partly for its wide variety of designs and beam angles. Halogen AR111 spotlights are often used in shops or showrooms, and normally have a metal block over their filament to prevent glare. Light fittings normally carry a ‘no cool beam’ symbol to signify incompatibility with the GZ10. The GZ10 is unsuitable for use in most GU10 light fittings – despite having the same pin arrangement, it will not fit because a GU10 bulb has a bevelled base, whilst the GZ10 is square. The GZ10 bulb is a relatively rare mains-voltage bulb that dissipates its heat using a dichroic filter through the back of the bulb. One defining factor in a GU10 is that infrared heat is always projected forward in the beam, whereas many MR16 low-voltage bulbs of the same size (50mm diameter) use a dichroic filter to dissipate heat through the back of the bulb. This base provides a very secure electrical contact, similar in principle to a bayonet cap. GU10 bulbs use what is known as a ‘twist and lock’ base, introduced by Sylvania in 1996. It is used in accent lighting, task lighting and general lighting. The GU10 spotlight is by far the most common type of mains-voltage halogen reflector. A halogen bulb includes all colours of the visible spectrum in its light, which means colour is displayed with more consistency than is possible in LED or fluorescent technologies. Another reason for its popularity is its superb colour rendering. Halogen is one of the primary technologies used in spotlighting, partly due to the fantastic choice of products available. Halogen bulbs are available in a variety of different types and styles, each suited for a different use. violets and blues).Įnergy-saving halogen bulbs are available as an economical alternative to incandescent GLS bulbs, candles, ‘R’ reflectors, globes, and golf balls because halogen typically has twice the lifespan of an incandescent equivalent. Halogen technology produces a marginally cooler, brighter-looking light than the old technology, and is better than incandescent light at rendering short wavelength colours (i.e. Replacing Incandescent Bulbs with HalogensĮnergy-saving halogen technology is widely used in retrofit products designed to replace incandescent bulbs, many of which have been phased out by recent EU legislation. For more information, please see our Ultimate Guide to Buying LED. For an even more energy efficient solution you can also fit LED replacements. However, it is possible to buy compact-fluorescent (‘low energy’) bulbs to replace these, giving a more energy-efficient and less directional light. Although popular, they are not necessarily the most practical, as they cast shadows and generate a lot of heat. These are normally found in kitchens, on spotlight ceiling bars, or ceiling plates.
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