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Induction Lamps: A Economic and Energy Efficient Lighting

by seecol

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There are several categories to consider when selecting lamps typically used in domestic, commercial and industrial settings. Here we provide a breakdown of the types of lamps available, and the factors which separate them.

What are the most common types of lamps?

Filament lamps:

  • General Lighting Service (GLS) and Reflector Filament Lamps.
  • Halogen-filled filament lamps (tungsten halogen).

Discharge lamps:

  • Low pressure mercury fluorescent tubes. 
  •  High pressure sodium lamps.
  • Low pressure sodium lamps.
  •  Metal halide discharge lamps. 
  • High pressure mercury discharge lamps. 
  •  Induction lamps. 

The idea for induction lamps has been around for over 100 years but has only recently become commercially viable, and even then the lamps themselves cost considerable more than their incandescent counterparts. But they use considerable less power, typically a 40 watt incandescent lamp can be replaced by a 8 watt induction lamps, a 60 watt by a 14 watt lamp and the replacement for a 100 watt is a 24 watt induction lamps.

How Induction Lamps Works?

Induction Lamps create light by using an electromagnetic field to excite mercury particles mixed in an inert gas like argon or krypton. The mercury creates a UV light and a phosphor on the inside of the bulb or tube filters the energy into visible light. This is a type of fluorescent light. Unlike a standard fluorescent light, induction lamps do not use electrodes in the tube.

The induction lamps have three parts: frequency generator (ballast), discharge tube and electromagnet (aka: inductor, energy coupling coils or energizing coils).

  • First the ballast creates high frequency current (230 or 250 KHz).
  • The current is sent through the electromagnet and an electric field is produced. The number of turns (times the wire is wrapped around the iron core) is determined by how each product is designed (so it is not consistent among different lamps).
  • Energy is transferred from the magnet to the mercury in the tube in the same way that a transformer works... induction.
  • The mercury vapor emits UV light which strikes the phosphor and makes light.


Type of Induction Lamps:

There are three kinds of induction lamps: external, internal and HEP

  • External Induction Lamps.
  • Internal Induction Lamps.
  • ·         High Efficiency Plasma (HEP).
  • Sulfur Lamps- The sulfur lamp is also a plasma lamp.

Advantages of Induction Lamps:

  • Consistent color matching. Induction lamps release light that is balanced between all colors. Because incandescent bulbs do the same, many consumers prefer induction lamps lighting.
  • Longer lifespan than LED lights. Certain induction bulbs can emit light for more than 100,000 hours.
  • Extreme efficiency. Induction lighting is often more efficient than LED technology.

Induction Lamps isn't for everywhere, the light units themselves are quite large and so there is little place for them in the domestic environment. Also the lower power units can be less efficient. Aside from these two caveats everyone should take Induction lamps technology in to consideration when selecting their lighting.


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