Home generalLampholders - Overview: Types & Sizes of Lampholders

Lampholders - Overview: Types & Sizes of Lampholders

general : Lampholders - Overview: Types & Sizes of Lampholders

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  • Overview - Lamp base
  • Halogen spot versions
  • Sockets for tubes
  • Sockets of LEDs

Light is quality of life. What used to be done with chandeliers and kitchen lamps has given way to an enormous selection of light sources. In addition to numerous functions and designs, the technology of luminaires has changed enormously in recent years. This also results in an increased selection of lamp sockets. Find out everything you need to know about lampholders in this guide.

Which lamp for what purpose "> Overview - lamp base

E27: The classic

The thick-footed lamp base for screwing in, despite the broadest prohibition of classic filament lamps, still in use. The manufacturers of modern energy-saving lamps have adapted to the million-fold standard standard and offer their innovative products also suitable for the classic frames. The E27 socket will remain in use for a long time due to its high distribution and easy and safe handling.

E14: The little brother of E27

The E14 is the narrower version of the E27. These lamp holders are still used for narrow lamps. The "candle", ie the light source with tapered glass body, is a typical application for the E14 lamp base.

GU10: bayonet with feet

The GU10 lamp socket is also called "bayonet socket". He is particularly popular for ceiling lights that are difficult to get to. The lengthy screwing, as known from the types E27 and E14, is not necessary with the GU10 lamp holders. The reason for this are the two feet, which simply provide a quarter turn for a secure fit of the lamp in the base. The GU10 lamp sockets were introduced at the halogen spotlights. Meanwhile these types are also gladly used with LED bulbs. The GU10 is available in sizes of 50 mm and 111 mm diameter

Be careful, do not confuse! The GU10 lamp socket can easily be confused with the GZ10. The problem is that GZ 10 sockets only accept GZ10 lamps. GU10 sockets also fit on GZ10 lamp. The U in GU 10 therefore stands for "Universal".

B15: Standard of the world

Although they are also called "Edison socket", we are in Germany with our screw bases relatively alone in the world. In many other countries, the B15 sockets have been standard for decades. This type has two laterally protruding pins. Like the GU10 sockets, the B15 lampholders are securely connected to the light source by a quarter turn.

Halogen spot versions

The lampholders for halogen spots are a separate subgroup under the selection of sockets. Technically, they are all very similar: Instead of elaborate screw and bayonet connections, the lamp sockets for halogen spots provide a secure hold even with small wire pins. These protrude only a few millimeters out of the bulbs. The pedestals have very precisely manufactured mounting holes, which are also equipped with an internal spring. However, the different sizes of halogen spots also require a wider choice of types of sockets.

GU5.3: Standard Spot Halogen

The overview of the halogen spots is quite easy to understand: The number stands for the distance between the wire pins to each other. Consequently, in the GU 5.3, the distance between the pins is 5.3 millimeters. This was the standard measure with which the halogen lamps in the late 1970s moved into the first apartments.

GU4: point light

The halogen bulbs are designed for point lighting. These types are not suitable for room lighting. In showcases, they have proven very successful. In order to make really small applications possible, the GU4 socket was first launched on the market.

G4 Capsule

Although also equipped with a pen distance of 4 millimeters, the G4 capsule offers a particularly compact spot light. It is often used for backlit signal lights.

G9 Capsule

The G9 capsule has similar dimensions to the G-4 capsule. But it can be well distinguished by the loop-shaped connections. The G-9 capsule is also suitable for LED bulbs.

G53: area by halogen

The G53 lamp base was now the approach, with halogen headlights also produce a surface lighting. This is made possible by particularly large spotlights. These require not only a large reflector, but also a wide distance between the pins. At 53 millimeters, the G53 lampholders also provide powerful light sources with greater light and heat radiation.

However, the G53 is just the most common type of halogen socket. In total, the trade offers a selection of 17 lamp sockets.

Sockets for tubes

Tubular lamps have the decided task of surface lighting. Although the fluorescent tubes have also been of great importance in outdoor advertising on buildings for decades. However, their original purpose is to illuminate spaces cheaply and efficiently. The fluorescent tubes are currently being displaced by the LED lamps. However, the versions have remained, so that rod-shaped LED lamps can be used in the lamp base for fluorescent tubes.

Tip: In order to replace a fluorescent tube with an LED tube, the starter must also be replaced by the lamp base. The starters for LED tubes are only simple bridges. Their exchange is necessary, otherwise the exchange will not work.

The standard sizes for fluorescent tubes are:

  • W4.3: 7 mm diameter type "T2"
  • G5: 13 and 16 mm diameter types "T4" and "T5"
  • G13: 26, 32 and 38 mm diameter, types "T8" "T10" "T12"
  • 2GX13 (ring shape): 30 mm diameter, 16 mm base diameter, type "T5"
  • G10q: (ring shape): 30 mm diameter, 30 mm base diameter, type "T9"
  • R7s: light in bulk

The lamp bases "R7s" are intended for applications where extremely much light is needed. Typical applications include stationary miner's lamps, recording recordings, theater lighting, construction site lighting. The extremely bright and hot halogen burners are gradually being replaced by similarly powerful LED bulbs. Although these are somewhat weaker in performance, they are not so hot and are more durable. The lamp holders have remained the same. The rod-shaped bulbs are still hung in the side spring clips - done.

Sockets of LEDs

LEDs: Lampholders of the future

The LEDs are the latest representatives of the bulbs. They had to adapt to the existing selection of sizes and types of sockets. However, the development of these durable, innovative and efficient bulbs does not do justice. The overview of special lamp sockets for LED is, in addition to the "inherited" types, still quite large. However, most of these types are more likely to be crafting applications for hobby electronics and professional developers.

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