Light Bulb Bases Explained
The bulb has a threaded metal base which screws into a matching socket. Most light bulbs used in the home use an Edison Screw Base.
Light Bulb Bases And Sockets Are Normally Defined By A Letter Number Letter Format Made In China Com Light Bulb Bases Led Lighting Solutions Bulb
Every light bulb has a unique code associated with it.
Light bulb bases explained. Light bulb bases and sockets are normally defined by a letter-number-letter format with the last letter optional. Over time the more historically popular lighting types have become standard and these are the ones that weve tried to cover here. An Edison screw base is a threaded metal base that holds the bulb securely in place.
For further understanding take the e26 bulb base as an example its a typical screw base 26 refers to its base diameter of 26 mm. From top left to bottom right. From Wikipedia on the Edison Screw Base.
If you do not see the base type you are looking for give us a call at 800784. One of the most common shapes that you probably associate with a light bulb is the A series bulb with an E series base A standing for Arbitrary and E meaning Edison. BT Bulged or Blown Tubular bulb shape used for table lamps.
The main shape designations of light bulbs are. All kinds of light bulb bases are measured in millimeters. Common bulbs with E26E27 bases.
BR Short reflector style light bulb. Shop by screw base with our Universal Bulb Finder E26E27 Medium Edison 26-mm or 27-mm Diameter. The contact wires are soldered to the base metal at two different points on the base in order to keep them affixed to the base metal.
Light Bulb Base Types Whether its a halogen lamp or LED bulb chances are itll have one of the following bases or caps. In an incandescent or halogen screw base light bulb two contact wires connect the filament to the base of the light bulb where the electrical voltage connects to the light bulb. Light bulb bases and sockets are normally defined by a letter-number-letter format with the last letter optional.
Here are the three most common light globe bases. Use this handy guide to identify different types of light bulb bases that apply to incandescent halogen high-intensity discharge fluorescent and LED light bulbs. 3-way bases have three contact wires that are on the light bulb base.
The first letter designates the shape or form of the base the numbers represent either the width of the base or the distance between the pins. This is the most common light bulb base that you can buy and is used in HID CFL CCFL halogen and incandescent light bulbs. An electrical current flows through two of the contact wires.
Most of the light bulbs that you buy in stores or online are going to have this kind of base. B10 LED bulbs in wall sconce CA10 LED bulbs in chandelier C9 LED bulbs in Christmas light strings C7 LED bulb in night light. The second letter designates the number of pins or contacts on the lamp.
Its clearly printed on the base of the bulb and on the packaging. 1 888 455-2800 Fax 15083632900. This is designated by the E in the first letter of the base description.
The side of the base plastic solder ring plastic ring and the center solder circle. B Bullet tip. The Edison screw base is named for inventor and innovator Thomas Edison.
The base is composed of the following parts. Click on any of the illustrations to view a list of bulbs with that light bulb base. Find the light bulb base type youre looking for with this visual chart- detailed illustrations of general bases fluorescent bases and specialty halogen base types.
The first letter designates the shape or form of the base the numbers represent either the width of the base or the distance between the pins. E26 bulbs are primarily used in North America while E27 bulbs are most. A19 A15 A21 BR bulged reflector spotlight and floodlight bulbs.
Normally a bulb with a screw base or bayonet base measures the diameter of the base while a pin base measures the spacing between two pins. The base is the bottom part of the globe which connects the bulb to the light either by plugging in or screwing into a fitting or socket. Another common bulb shape is the B series bulb which stands for Blunt tip and are used in decorative light fixtures when you want a candle-like appearance.
The Edison screw fitting is a system of screw mounts used for light bulbs developed by Thomas Edison and licensed starting in 1909 under the Mazda trademark. All of the bulbs in these groups resemble the shape of a candle flame and are often referred to as candle bulbs. Light bulb bases and sockets are normally defined by a letter-number-letter format with the last letter optional.
A Standard household incandescent light bulb shape widely used for home lighting universal. Most CFL and LED replacements for incandescent lights will use the E base. E27 Medium A little larger than the common E26 medium base this bulb base can still be used in most applications.
C Candle or Conical bulb shape. The second letter designates the number of pins or contacts on the lamp. The first letter designates the shape or form of the base the numbers represent either the width of the base or the distance between the pins.
The most commonly used size is the E27 often found in domestic settings and designed to fit in standard light fixtures. The second letter designates the number of pins or contacts on the lamp. The B and C groups.
These codes are usually a combination of letters and numbers. These contact wires are in different positions on the bottom of the base. B10 C7 C9 C15 CA10.
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