Monday, April 4, 2011

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Spotlights - the basics that are worth more

Yes, a few years ago in our house was dominated by the lamp on the ceiling or desk. Today we have to choose a very wide range of decorative lamps, wall lamps or halogen lamps. But what it was worth it to know about halogen lighting ... ?


Halogen lighting is currently used mostly for decorative purposes. Getting to know so little closer to the source.

Halogen belong to the group of incandescent light sources. They are characterized by higher efficiency compared to traditional incandescent bulbs, so that the same power we get more light. They have a much smaller filament so that it can be equipped with headlamps. On the market you will find very many types of halogen-equipped
just in the headlights. Valuable distinguishing feature halogen light bulbs are also whiter light greater durability.

Here are some of the major advantages of halogens:

  • higher efficiency compared with the bulb,
  • from 2 to 5 times greater life than incandescent bulbs,
  • whiter light compared with incandescent bulb (ranging from about 2800K - 4000K),
  • small size, which facilitate their use,
  • possibility of the reflector directly in a light bulb,
  • versions of both the low and standard voltage (eg 12V, 230V),
  • very wide range of frames and lighting fixtures using halogen light source,
  • wide range of available power (about 5W to 2000W, depending on the type),
  • accurate color rendering
  • can easily dimmable halogen light.
But in addition to the advantages of halogen lights are also disadvantages. The main disadvantage is their high temperature, which imposes certain restrictions and requirements. Halogen hot bubble is much more than traditional bulbs and therefore not allowed to sources with the same mount, in place of halogen light bulbs use the same power. Luminaire to the light bulb can not withstand higher temperatures.

given time, therefore, defects halogens:
  • high temperature halogen bulb and mounting (shaft),
  • lower lifetime compared with halogen light sources such as gas-discharge lamps ( but these have large dimensions which significantly limits their use )
  • despite relatively high efficiency halogen lights are characterized by lower efficiency than other sources such as gas discharge lamps (here too large dimensions significantly limit their use),
  • versions halogen low voltage (eg 12v) require a power transformer which raises the cost of installation (low voltage is However, an advantage if you intend to use halogen bulbs in the bathroom, where he should not be used for mains voltage lamps),
  • the assembly must be careful that the bulb does not leave fingerprints, which reduces significantly their lifetime.

Taking account of the construction and halogens can be divided into the following groups:

  • lamp with reflector. Currently exist in various strengths and more importantly from different angles to focus the light. Thanks for any illuminated object we can match the angle of such a halogen light to obtain the desired effect (so that the object was illuminated in whole or in part). Standard reflector illuminated Item reflects both light and heat generated by the filament. Aluminum reflectors reflect light 100% and 95% of heat, so in order to prevent excessive heating of the illuminated objects, halogen bulbs are manufactured with a special structure, the so-called. dichroic reflectors that let in about 66% of heat to the rear. In this way we obtain 33% of heat reflection and 95% of light in the direction of the illuminated object. So if you intend to use dichroic halogen lamp in the ceiling cavity, the so-called. "Halogen mesh, we need to ensure adequate ventilation above the ceiling (natural or forced) which will enable drained by the halogens produced large amounts of heat. Therefore, inter alia, for the light sources (mainly halogen reflector) manufacturers provide the minimum distance between the source and the illuminated object. Usually it is 0.5 m.
  • very small overall dimensions low voltage halogen lamps without reflector intended mainly for the local lighting and decorative. They are used for example in desktop lamps, chandeliers, kinkietach.
  • linear lamp mount "double ended". This type of halogen lights are designed primarily for projectors and lamps, which has its own reflector. They can be used both inside and outside of buildings, general lighting space. Quite commonly used in projectors with a motion detector light, "safety" before the landscaped grounds. Halogen linear with power greater than 500W light require a horizontal position, which is a limitation.
  • are also quite popular low-voltage halogen reflector aluminum Aluline 111th The producers are offering bundles of light bulbs with more concentrated than these dichroic halogen lamp, and therefore perfectly suited for creation of lighting objects or areas with greater distances. Those with angles of illumination down to a few degrees, even from several meters. Very often used in offices.


course, varieties of halogens is a whole bunch, and it is difficult to name them all, but they have briefly discussed above are among the most found in our market.

With its advantages of halogen found numerous uses. But this may be another time ...





Robercik72
http://mojwymarzonydomek.blogspot.com/

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