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Rotary dimmers

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Kanlux 28754 DOMO Rotary dimmer LED 3 - 100W - white

Kanlux 28754 DOMO Rotary dimmer LED 3 - 100W - white

Starting at
€18.72 +VAT
CZK 462.81
  • Colour: White
  • Rated voltage [V]: 220 - 240
  • Max. power [W]: 3 - 100
  • Power consumption: 3 - 100 W
  • Tension: 220 - 240 V
  • EAN: 5905339287540
  • Manufacturer: Kanlux
Supplier:
LE
LED21 s.r.o.
verified supplier
Response time: usually up to 2 days
Kanlux 28752 LOGI Rotary dimmer LED 3 - 100W - silver

Kanlux 28752 LOGI Rotary dimmer LED 3 - 100W - silver

Starting at
€18.62 +VAT
CZK 460.17
  • Rated voltage [V]: 220 - 240
  • Colour: Silver
  • Max. power [W]: 3 - 100
  • Power consumption: 3 - 100 W
  • Tension: 220 - 240 V
  • EAN: 5905339287526
  • Manufacturer: Kanlux
Supplier:
LE
LED21 s.r.o.
verified supplier
Response time: usually up to 2 days
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Rotary dimmers

A large group of lighting regulators includes dimmers implemented as modular, for installation in electrical switchboards and cooperating with buttons, as well as installation dimmers resembling typical lighting switches. Installation regulators, usually mounted like other equipment, i.e. under the plaster, are available primarily as rotary, but also push-turn, push-button, slide, and also controlled by a remote control and sound.

Analog and digital rotary dimmers

Rotary dimmers are the oldest, next to slide dimmers, type of lighting regulators, which has several decades of tradition. The first rotary dimmers were based on a potentiometer, but in the 80s of the last century digital regulators appeared. In terms of design, electronic dimmers equipped with a knob are indistinguishable from traditional dimmers, but they offer a much wider range of applications.

Contrary to the traditional ones, they cooperate not only with incandescent lighting, but also with energy-saving fluorescent lamps widely used today. They are also perfect for use with LED lighting, which is very demanding in terms of the current intensity range, therefore only precise electronic dimmers ensure their proper cooperation.

Traditional rotary lighting controls

Rotary dimmers based on a potentiometer have been available for sale for several decades. They are suitable for use with incandescent lighting, which until the end of the last century was the main way of providing buildings with artificial light, next to fluorescent lamps.

Today traditional light bulbs are sold as special applications and in the last few years they have been replaced by energy-saving fluorescent lamps and, above all, cheap LED lighting that consumes very little electricity. Of course, both bulbs, fluorescent lamps and halogen lamps can be found in houses, flats and public buildings, but definitely in the minority, which is why traditional slide and rotary dimmers based on a potentiometer are a minority in the commercial offer including a group of lighting regulators.

Electronic rotary dimmers

Traditional rotary dimmers are increasingly replacing their electronic counterparts based on resistors and CMOS switches. Although they usually look the same as the first, they allow you to change the intensity of lighting of various types, although they are not always manufactured as universal. They can work as lighting regulator in cooperation with:

  1. traditional (special) bulbs,
  2. energy-saving fluorescent lamps,
  3. halogen lighting 230 V and powered by a transformer,
  4. LED lighting.

In most cases, dimmers only serve to improve the comfort of lighting users by giving the possibility to reduce the light intensity. However, in the case of halogen bulbs, which are degraded due to the heat they generate during operation, they can contribute to an increase of up to 70% of their lifespan only by temporarily reducing the intensity of lighting.

When choosing a dimmer, you should always first of all consider its suitability to the light sources it is to control. If the lighting regulator is not adapted to work with energy-saving fluorescent lamps or light-emitting diodes, at best it will not introduce any changes (the movement of the knob will not affect the lighting intensity), but much more often it will cause e.g. flickering of lighting and also destruction of the device.

The second important issue that should be paid attention to is the proper selection of the power of light sources. Cooperation with a dimmer means that the lighting reaches an average of 80% of its nominal power, so if you want to be able to illuminate the room, you should oversize and install a slightly stronger lighting (or more points), which will ensure the right value of light intensity on the working surface.