5Pack Philips Halogen 12V MR16 50W GU5.3 36D 4000Hrs Dimmable Halogen Dichroic 58845100

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One advantage of low-voltage spotlights is their sharper, brighter quality of light over their mains-voltage counterparts. In addition to display lighting, low voltage halogen spotlights are common in downlights and wire lighting systems.

Hz AC from a wound transformer ( not an SMPS ) has a sine wave without sudden / instant / high frequency changes of voltage and AC/DC LED current drivers can operate on this smoothly varying supply without becoming unstable. If that pulsing or otherwise varying "12 volt" supply is used to feed a constant currrent driver feeding a controlled current into the LED element of a lamp there is the risk that the pulsed supply will cause the current driver to operate in an unstable manner and hence be unable to properly control the current it is supplying through the LED.

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This is easy and now straightforward to do because LED GU10 lamps can be swapped straight over without any wiring or transformers to consider. Here are some options for you to consider if you're replacing your 50W halogen GU10s: Halogen capsules are used in applications such as caravan lighting, boat lighting, pelmet lighting, or desk lighting. They come in low-voltage G4 or GY6.35 types, or a mains-voltage G9 format. The suffixed numbers in their names are based on the distance in millimetres between their two pin centres. Bulbs that are put in open mounts, typically GU10 mounts. These are normally found in kitchens, on spotlight ceiling bars, or ceiling plates. Although popular, they are not necessarily the most practical, as they cast shadows and generate a lot of heat. However, it is possible to buy compact-fluorescent (‘low energy’) bulbs to replace these, giving a more energy-efficient and less directional light. For an even more energy efficient solution you can also fit LED replacements. For more information, please see our Ultimate Guide to Buying LED. It is high frequency changes in the supply voltage that make the LED current drivers operate in an unstable manner.

The G9 is the most compact mains-voltage halogen bulb available, and because it requires no 12V transformer it’s widely used in extremely small light fittings.

Halogen lamps, like traditional incandescent lamps, use a tungsten filament, but they’re also filled with a small amount of halogen gas (such as iodine or bromine) in a capsule. Keep reading to learn more. How Do Halogens Work? Energy-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. Types of Halogen Bulbs & Their Uses

Energy-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. 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. violets and blues). The LED bulb is one or more LED's with some sort of current limiting device called a driver, this is built into the bulb, not normally a stand alone unit, you can get stand alone drivers often rated around 320 mA with a voltage which varies from often 12 to 50 volt, point is a driver controls current not voltage, in the main a bulb has the driver built in, and needs a fixed voltage often 12 volt or 230 volt. The problem is as the user we have no idea what type of driver is inside the bulb.

Another Better Option?

Aurora Ice 5W GU10 - Available in dimmable and non dimmable, it has a nice wide beam angle of 60 degrees Halogen bulbs are available in a variety of different types and styles, each suited for a different use. Mains-Voltage Halogen Spotlights High-powered specialist halogen capsules are also available for applications such as theatre, TV, film, or projector lighting. Uses at a Glance Bulb Style This involves additional costs, more time and more messing about - which nobody wants. Another consideration is that if you do plan to dim them, you're going to need to ensure that the LED, the transformer and the dimmer switch are all compatible with each other. The Varilight YT transformers combined with the Varilight V-Pro dimmer switches are compatible, as are the Philips MR16 LEDs. A winning combination! But you've now spent more on these items than you would with options 2 and 3. Option 2 - Convert to GU10 LED