Lumena 2W LED MR11 Lamp, Warm or Daylight White – 12v AC/DC
Replacing Existing 12v Halogen Bulbs to LEDs
This 12v LED MR11 lamp is for use with all 12v lighting systems. The expected life of LEDs are a lot longer than halogen. No special driver required. For only 2w, the light output (lumens) is surprisingly bright and will illuminate over approx. 2m-3m.
All 12v systems require a transformer in order to convert the 230v mains supply to only 12 volts; the required voltage for low voltage light bulbs such as G4s, MR11s and MR16s (G5.3). LEDs can save a household a large amount of money and energy, due to their long lifespan. Many people are replacing their existing halogen bulbs with LED equivalents. There are however a couple of things to consider. Here is what you need to know…
How to power your LED MR11 Lamp – There are two different types of transformers: magnetic and electronic.
Old style magnetic transformers, also known as wire wound, are fairly simple. They use coiled wires around an iron core to convert the power to 12v output. All Lumena transformers work in this way. Electronic transformers have more complications. Some older types, prior to LED bulbs, are not compatible with LEDs.
The electronics of the transformer tend to interfere with the electronics of the LED bulbs, thus causing flashing, flickering or even no light output at all. The design of newer electronic transformers have the intent of powering LEDs and therefore work well, as long as the wattage and current type are also correct.
Some LED bulbs will only work with 12v DC power supply. These need to be used with a 12v DC transformer or they will not work correctly, if at all. Some LED bulbs, such as Lumena’s LED G4s, LED MR11 and MR16s can be run off of both 12v AC and 12v DC. This means that either an AC or DC 12v transformer can be used causing no issues at all.