There are three distinctive types of fluorescent light bulbs.

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R-Bulb Type Bulbs and LED types with a built-in reflecting surface used in ceiling lighting, track lighting, and other specialty locations. These fluorescent bulbs that you are seeing, the long tubes, basically have two electrodes on the sides. Bulbs are the most common problem with a bad fluorescent fixture. Knowing how to find a fluorescent light bulb that fits all of your needs will save you time, worry and ensure you get the right one every time. Find the light bulb base type you’re looking for with this visual chart- detailed illustrations of general bases, fluorescent bases and specialty halogen base types. Today, fluoresent fixtures come in many shapes and sizes, with specialized fluorescent lamps available to match them. 2. The fixtures themselves included an internal ballast to regulate the electrical current flowing to the lamps. The typical fluorescent gives a flat, cold light, often bluish and harsh. Four-foot T8s, in particular, are used everywhere – in hospitals, commercial office spaces, schools, retail spaces, warehouses... everywhere. For example, if the last two digits on a lamp say 41, that lamp's color temperature will be 4100 K, which is a common tri-phosphor cool white fluorescent lamp. Some fluorescent designs (preheat lamps) use a combination filament/cathode at each end of the lamp in conjunction with a mechanical or automatic switch that initially connects the filaments in series with the ballast and thereby preheats the filaments prior to striking the arc. There are many types of fluorescents on the market: warm ones, cool ones and special-colored ones, and they typically produce more light and last longer than incandescent. T8s are 1-inch diameter fluorescent tubes, and they are the most prevalent of all fluorescent tubes. Skip to main content. Contact. There are several steps involved that will allow you to determine the health of the bulb as well as the lamp. Fluorescent T8 Bulbs. STRAIGHT, CIRCLE-LINE, U-SHAPE, SINGLE PIN, 2 PIN, CFL, SNAP IN. View Night Light Bulbs. Below is a range of fluorescent lamps, one for each popular starting method: Rapid-Start (40 Watts or Less) and Preheat Lamps. These bulbs can be found in a variety of shapes including BRs, MRs, and LED tubes. Convert your existing fluorescent fixture to LED technology Convert your existing fluorescent fixture to LED technology with the Feit Electric 4 ft. T8 32-Watt or T12 40-Watt Fluorescent Replacement Plug and Play LED Lamps a common replacement item for fixtures using fluorescent bulbs. 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. Testing a fluorescent tube is a relatively easy procedure that can be done without professional help. Rapid-start lamps are the most popular fluorescent lamp type used in commercial applications such as office buildings. If the first digit on a lamp says 8, then the CRI of that lamp will be approximately 85. Types of Lighting, Fluorescent. Fluorescent Tube Center Pin Instant Start Fluorescent Bulbs. These fluorescent bulbs that you are seeing, the long tubes, basically have two electrodes on the sides. Like fluorescent bulbs, HID bulbs require a ballast to operate. T8 fluorescent tubes are commonly rated for 20,000 life hours, but range from 7,500 hours to 46,000 hours for standard T8 tubes. Help with identifying Fluorescent Bulb and Base Types at LightBulbs.com It is a daylight-equivalent and cannot be put on a dimmer. Depending on the type of fixture, the ballast type it has, and the age of your fixture, you’ll be able to find one of these type bulbs more than likely. Testing a fluorescent tube is a relatively easy procedure that can be done without professional help. Find quality fluorescent light bulbs online or in store. Length and width. Knowing how to find a fluorescent light bulb that fits all of your needs will save you time, worry and ensure you get the right one every time. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. This is a single pin bulb connects to a single center pin … The property owners whose lights I was repairing had kept the original packaging for two generations of GE brand T8, 36-inch fluorescent bulbs that were used in various fixtures in the home. LED Light Bulbs LED light bulbs are up to 80 percent more efficient than traditional lighting. Whether you are buying a fluorescent bulb for the first time or ordering a replacement, the first place you need to look is the fixture.