Jan 102013
 

LED lamps are no longer such a novelty and there is more and more technical information about them. Like any high-tech product, and they are undoubtedly such, LED lamps have specific features to achieve a remarkably long life that is their important characteristics. Here we will take a look at 10 of the most important features in the operation of LED lamps, which really should be taken into account if we do not want these lamps to burn out.

Broken-Bulb

  1. LED lamps for mains voltage of 220V can operate trouble-free also at voltage of 180 to 245V. Sometimes, however, the voltage goes beyond these limits because of instability of the electricity system. When powerful power consumers drawing large inrush current are connected, when there are peaks in the network, power surges and various transients processes, it is necessary to put RLC filters and AC voltage stabilizers.
  2. LED lamps cannot operate in electric fixtures for fluorescent lighting. This means that you cannot just unwind a fluorescent tube and put a LED tube in its place, since in the luminaires equipped for fluorescent lighting there are chokes, starters, ballasts and ignition devices that are required for the normal operation of fluorescent lamps, but would damage irreversibly a LED lamp inserted in their place. This is because the switching of a fluorescent lighting fixture is done by a high-voltage pulse of the order of 1100 to 4000V, which will cause failure of the LED lamp.
  3. LED lamps, in general, should not be regulated by various regulating devices such as rheostats, dimmers etc., because they will burn-out. This, of course, does not apply to the specially produced dimmable LED lamps that are a little more expensive.
  4. LED lamps are sensitive electronic devices and any damage of the mains has negative impact on them, e.g. arcing of contacts or sockets, switches with glyme lights and other sources of disturbances of the energy reaching the LED lamps.
  5. LED lights emit heat during their operation. Although this heat is incomparably smaller than the heat emitted by incandescent lamps, if it has nowhere to disperse, for example in a sealed light globe, this can lead to overheating and burn-out of the LED lamp. You need to insure a possibility for cooling the LED lamp and this can be done through natural convection of warm air through specially created for the purpose openings or through some type of ventilation.
  6. LED lights designed to work with constant voltage of 12VDC, can also work with voltage, which varies between 10.5 – 14.2VDC, produced by a battery or voltage 12VDC, produced by stabilized power supply.
  7. LED lights operating at 12VDC must not be supplied with adapters AC / DC, on the output of which there is stabilized 12VDC for large current, as at idle running and low load the output voltage varies in the range of 11-18VDC.
  8. LED lamps that operate at 12V, both constant and alternating voltage can be supplied with voltage with pure sine-wave from transformers with toroidal magnetic core, having „hard“ feature, best from a transformer designed to supply power to lamps, the so called „lighting transformer“, on the secondary side of which there is voltage 11,5VAC.
  9. LED lamps that operate at 12V AC / DV cannot be powered by electronic transformers for halogen lamps because their output voltage has complex shape and high amplitude value. They can be powered by switching power supplies or toroidal transformers with voltage 11.5VAC.
  10. LED lamps for 12VAC cannot be powered by batteries, to which there are connected network chargers, solar controllers, inverters, etc., because sometimes this leads to generation of voltage up to 70V.
  11. LED lamp

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