Lightbulb socket

As part of a lamp cap of the lamp is known, which makes mechanical and electrical contact with a socket. The lamp holder is the element that holds the lamp.

The life span of conventional lamps is limited. Therefore, light body can be effortlessly screwed out of a socket or pull. In addition, baseless fixtures with free wire ends are used in special applications. These are either directly connected by soldering or clamping or designed plugged again by an additional element such as in fairy lights.

• 3.1 Marking
• 3.2 Application 3.2.1 Socket designations for automotive light bulbs

• 5.1 Marking

Edison base

The shape and the name of the thread used in Europe as a base for Edison bulbs goes back to Thomas Alva Edison. The dimensions of the Edison thread are standardized according to DIN 40400 and in the IEC 60238:1998. Usual Edison screw according to DIN 40400 can be seen in the table below, a different overview of Edison thread is at:

Since the outer contact of the lamp holder can easily be touched, this is supposed to be connected with fixed lampholders with the neutral conductor, the harder to touching base contact with the outer conductor. However, many lamps are connected without regard to the correct polarity from ignorance; one can not rely that the external contact is no power. For portable luminaires that are connected via a Euro or Schuko plug, no assumption about the polarity of the lamp socket can be made on principle, because both systems are not plug polarity reversal.

Touching the base contacts can be attributed at least in the screwed lamp prevent constructively by extending beyond the end of the socket insulating shrouds.

235 - V bulbs E40 and E27 ( 500 W and 15 W).

(from left ) 230- V bulbs E27, E14 (60 W and 40 W ) and 6 -V light bulb E10 ​​( 0.6 W).

Base for fluorescent lamps

CFLs

Compact fluorescent lamps with integrated electronic ballast for 230 V AC incandescent lamps usually have as an Edison screw base on (E14 and E27). In the UK and Ireland, the USA, partly in France, also Bayonet cap ( B15d B22d and ) are also common.

Compact fluorescent lamp with E27 base, 8 watts, other design

British Bayonet cap (BC / B22 / B22d ) with 22 mm diameter

Connectors ( G) and the sleeve base ( S)

Plug-in base for compact fluorescent lamps with integrated into the lamp starters have two pins. Is an elongated parallelepiped block of plastic that contains the starter ( with glow starter suppression capacitor ) between the two contacts on the base. The lamp in which this lamp is plugged in, required for the operation of a conventional ballast ( a 50 Hz choke coil). The starter is integrated in the lamp and is replaced at each change with. Electronic ballasts ( EVG) can cause startup problems in these lamps.

Plug-in base for compact fluorescent lamps without integrated in the lamp starters have four pins. This version has no starter, but only the fluorescent lamp itself all four filament or cathode connections are brought out. You circuitry is equivalent to large tubular fluorescent lamps. The socket is relatively short and hence compact. Suitable for these lamps lights can be fitted with either electronic or magnetic ballasts. Sleeve sockets are used for line lamps.

There are also circular fluorescent tubes, whose base really only closes the circle ring and the side is to stick with pins into a socket.

Compact fluorescent lamp with 2-pin plug-in base with integrated starter G24d -2 for operation with an external ballast

Compact fluorescent lamp with 2-pin plug-in base G24d -2

Conventional ballast with 2- pin plug-in base G24d -2

Tube sockets

The tube diameter of fluorescent lamps is standardized in DIN EN 60061:2012-07. The number after the letter " T" ( for " tube", engl. Pipe ) stands for the diameter in eighths of an inch (1/8 ⋅ 25.4 mm = 3.175 mm). A T5 tube for example, has a diameter of 5 /8 inch, which is about 16 mm. The pin spacing of the base at both ends of the straight shapes are also standardized. This identical base are used partly for different tube diameters. This fit T8 lamps in the older versions of the T12 lamps and can replace them. The development started with T12 lamps, and go to leaner lamps that require correspondingly less material less volume during transportation, storage and installation and achieve a higher light output per watt. Are usual today T8 and T5 ( this in two ways: high luminous flux or high efficiency ) and T4 in narrow light strips, such as shelves.

The lamps are usually electrically separated by axial rotation in either direction. Some bases are small markings stamped, and their location relative to the outer slot of the socket signaled "Lamp -free". In the larger versions G13 rotates rotating each pair of pins a slotted disc with approximately 90 °. Also, the position find "free" by hand. Long fixtures to be taken down or to the side are to keep both hands. The lamps break already at moderate lateral force on the tube center. The smaller version G5 has a "Y" -shaped slot. From about 60 ° rotation, the pin pair from the " Y " can thread.

Some version, however, is axially folded away against the spring force of a tube end or pull away from a stop position. In advertising displays lamps are often held by plastic clips or wire spring clips, free wired Jacks hold only with the spring force of the contacts. All these versions have the holes for the pins and axial need some exercise room.

Bayonet socket

The bayonet base is named after Joseph Wilson Swan as Swansockel or Swanfassung. It consists of a smooth metal cylinder having two stripped surveys. To fix it is first inserted and then fixed by a rotation ( bayonet lock).

Several lamps in a housing each with its own associated foot contact are possible. Since bayonet lamps can be used in two directions and rotated 180 degrees so that foot contacts then lie on the false opposites, as amended, or next to it. In particular, when the associated lamps have different properties, the function assignment is then reversed or they do not light all or in part.

In some lamps a bayonet, the bayonet fitting is thinner. If this is taken into account in the version, the 180-degree twisted insertion is prevented. Other lamps prevent this by base nipples that are not 180 degrees opposite. These methods are not standardized, but win with newer multi-contact lamps and holders of distribution.

Identification

The capital letter in the label provides information on the design. "B" stands for a bayonet socket. Follows an "A", so is this marking for " Automotive", the application of the base in the automobile sector. Follows then a "Y", so that stands for the color "Yellow ", in German "yellow". If there is no "Y", color is white. The number is the diameter of the base without the bayonet fitting, in millimeters.

The lower case letter indicates the number of foot contacts in addition to the co-orbiting metal contact. Is possible:

• S single ( a )
• D double ( two)
• T triple (three)
• Q quadruple (four)
• P penta (five)

Behind a dash can be specified to specify last other features.

Example: In the abbreviation B15d B stands for bayonet socket, 15 to 15 mm diameter of the base sleeve, d for two Fußanschlüsse. BA15S according to a design with a leg connector (single).

Application

This base construction is particularly to equipment and machinery - such as from car headlights - used to safely prevent loosening due to mechanical vibrations or shocks. For signal lamps used to be for vehicle headlights, the asymmetric bayonet socket BA20d used. This guarantees that the filament is without further adjustments in the focal point of the signal optics. For double -filament lamps he still makes sure that the main and secondary threads are switched correctly. For lighting purposes bayonet base, for example, in the UK and Ireland, the USA, partly in France, in use ( B15d B22d and ).

Base names for automotive light bulbs

• BA7s interior lighting ( backlight of tachometers )
• Ba9s parking light (also for signal lamps widely used )
• BA15S indicator, stop, reversing lights, rear fog lights, rear, Daytime running lights or license plate lights
• BAU15s indicators (colored bulbs)
• Ba15d two connecting poles down, either for dual-filament lamp ( brake and tail light) or single filament with a floating base ( anchor light for boats )
• BAX15d, BAY15d, BAZ15d: how ba15d, but with height or degree offset base pins
• Position of pins: BAU = " 9 4 clock ", BA / BAY = " 9 3 clock ", BAX = " 9 2 clock "

• BA20s vehicle lighting, especially in railway vehicles
• BA20d signal lamps
• B15 or B22 for 230 - V bulbs

The socket P13, 5 looks similar to the Bajonettesockel.

12 V dual filament lamp with bayonet base ba15d, 21 W and 5 W

Ba9s

Pin socket for halogen lamps ( Bipin )

The Bipin -foot normalization ( English Two pin, bipin cap of bipin socket ) is standard on lamp bases for halogen lamps and is part of the IEC standardization. This lamp base was 1892 World's Columbian developed by George Westinghouse for actions that have occurred in Chicago in 1893 World's Fair Exposition. The reason for the development was to avoid licensing problems with the patented Edision Edison socket.

For smaller designs in which together are the pins tight, it is also called Mini - Bipin. The letter " U " stands for a model with mechanical hold the lamp in the socket system. The lamp base here has two transverse grooves in the glass, in a constitution -installed spring can snap on both sides.

The pins are parallel pins of metal that hardly corroded at higher temperatures to remain reliable contact. Each pin is rounded at the exposed end or almost pointed, to facilitate the penetration between the closed leg of the " U" of the contact spring in the socket. The pins are melted in the glass base to a certain center -to-center distance over spot- follow inside small metal strip (which allow the gas tightness) and the ends of the coiled in the middle of the filament of tungsten.

G6.35 halogen lamp type; 12 V, 35 W

Metal Halide Lamp Type G8.5

Halogen lamp G9; 230 V, 40 W

GU10 halogen lamp type; 230 V, 35 W

LED lamp with reflector MR16 with GU5.3 socket type

2000 W halogen lamp type G38

Glasquetschsockel

Lamps with Glasquetschfußsockel (English: wedge -base lamps ) usually come as an instrument lamps, in the automotive sector, with halogen lamps and lights are used. In recent years, they also keep as turn signals and brake lights way into motor vehicles. Because the lamp sockets can be relatively well and therefore inexpensive to incorporate into the corresponding housing molded plastic part in this capping. With LED bulbs, the base is modeled by a plastic molding with inlaid bare connecting wires or a circuit board.

Identification

Common Quetschsockelbezeichnungen are here:

Vehicle Bulb with Glasquetschsockel W2, 1 × 9.5 d and Blown filament. 12 V, 16 W. Also, in the U.S. called " W16W " " 921 ".

Halogen bulb

Halogen tubes for 230 V mains voltage to the socket name R7s are available in different lengths and each length in different power levels. All are to be operated horizontally and behind a protective glass. Classic is the 118 mm long version with up to 500 W plugged into a reflector lamp made ​​of cast aluminum with Alublechreflektor and headband as construction sites or forecourt lighting. Reduced benefits are used to reduce electricity costs and waste heat.

The stretched filament is @ -shaped spring wires ( but rarely by Glaseinstülpungen ) is held axially in the center of the quartz glass tube. This is crushed at each end, where a thin sheet metal strip and welded wire contact leads to the outside. At each Quetschflansch a slotted bright ceramic tube is cemented, which surrounds a silver-plated contact well at its end. The identical version halves are mounted, each with a strong spring-loaded contact in standardized intervals. Rods can break when inserting hand power, so gloves are favorable. To use the bar without grease stains ( from the skin ), it should be with a cloth kept and cleaned with alcohol. In the version of ceramic slots only fit the narrow sides of the pinched tube ends. By first unilateral engagement of halogen rod in a holder page and complete impressions in the contact spring is also the other end of the bar space in the opposite version page. If the rod is axially inserted through a small angle can be easily rotated, then its hollows are well clamped between the two contact bumps of the socket.

Standard - length (dimension, in inches ) (length / contact distance ) / speed settings:

78 mm (= 3,07 " ) ( 78.3 / 74.9 ) / ( 48), 60, 100, 150, (190) (200) W

118 mm (= 4 5/8 " ) ( 117.6 / 114.2 ) / ( 80), 150, 200, 300, 500 W

189 mm (= 7 " ) ( 189.1 / 185.7 ) / ( 500), (750 ), 1000 W

254 mm (= 10 ") ( 254.1 / 250.7 (? )) / 1000, 1500 W

327 mm ( = 12 7/8 " ) ( 327.4 / 324 (? )) / 2000 W (*)

(*) The same glass tube 230 V 2000 W also comes with version Fa4: Without ceramic tube, the wire contacts are free before and are pressed with metal sleeves in diameter and 10 mm length of about 3 mm, total length then 334.4 mm. The relatively large contact forces are then only transversely within the sockets.

Power values ​​in parentheses: rare.

R7s Halogen tubes come in the same lengths for the lower line voltage 110-130 V, in standard length 118 mm for the low voltage 24-28 V and 42 V.

Halogen bulb type R7s/J118; 230 V, 500 W, 118 mm.

Soffittenlampe

A festoon is a small cylindrical bulbs low power, its frustoconical contacts lie at both axial ends. The central thin-walled glass tube ( no halogen) is tapered at the ends and sealed. This occurs each from a contact wire, which is soldered to the axial hole of the nickel-plated, brass cap cemented. Are the tapered ends in grooves, holes or depressions of the resilient contact plates used can be rotated around the lamp. The air blown into shape glass tube provides a seat for the contact sleeves and can be expanded in between more or less. Areas of application are, for example, Plate and interior lights of cars or toys.

• D6, 3 × L30 mm ( shape as Cartridge)
• D8, L31 mm
• D11, L39 mm
• SV8 0.5 to 8 festoon bulb for the tail, license plate and interior lights

(But 5 - mm cartridge fuses are cylindrical contact sleeves. )

Headlight bulbs for automotive

• R2 - dual filament lamp socket P45t ( " BILUX " lamp, trademark of OSRAM)
• BA20d, dual-filament lamp ( two-wheelers from 15/15 to W 35/35 W)
• H1 halogen lamp socket P14, 5s, also used for rotating beacons
• H2 halogen lamp X511 ( use in fog, Rally headlights and high beam Hella / Zender )
• H3 halogen lamp PK22s
• H11 halogen lamp PGJ19 -2 55 W (use low beam, high beam and fog light)
• HB3 halogen lamp, high beam typ 65 W
• H4 Halogen dual filament lamp P43t (for motor vehicles 60/ 55 W )
• HB4 halogen lamp (similar to H4, but with a different version), typ 55W low beam, fog lights
• PX43t, HS1 Halogen Two -filament lamp ( for two-wheelers, quads, snowmobiles, etc. 35/35 W)
• PX26d, H7 halogen bulb
• PGJ19 -1, H8 halogen lamp ( 35 W, for automotive fog lights)
• PGJ19 -5, H9 halogen lamp

Because of the variety of different cars manufacturers now offer an online search. This " lamp Finder" allow the assignment of lamps on the cars.

H1 lamp, socket P14, 5s, 12 V, 55 W

H2 lamp socket X511 12 V, 55 W

H3 lamp, socket PK22s 12 V, 55 W

H4 lamp, socket P43t 12 V 60/ 55 W

HB4 - lamp; Lamp body like H4, but another version

H7 bulb socket PX26d, 12 V, 55 W

Plug-in base

• P13, 5 - Prefocus socket for flashlights and bicycle headlight: Sheet metal collar at the base has a 90 ° V - groove for positioning against twisting. V is below horizontal filament, for Prefocus lamps ( filament position adjusted ), this usually with thin-walled elliptical glass bulb with a tapered tip often for the positive reception of the end of an angled elongated support wire or halogen lamps with a smaller, dickwandigerem cylindrical quartz glass bulb. It is inserted into the bracket and secured by mechanical tension of the negative contact spring in the illuminating device receiving from falling out.
• MG5, 7S / 9: miniature lamps, such as for model
• G17Q: particularly for projection lamps
• Bakelitstecksockel according to DIN 49601: Telecommunications lamp, colloquially known as phone plug lamp or telephone lamp.

Telecommunications lamp from Russian production, base made of bakelite similar to DIN 49601