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Edison to Mogul Base Adapter

Availability: In stock

Edison to Mogul adaptor
This Edison Medium base to Mogul base adapter can be used with our LED corn bulbs with medium base to fit a mogul base, giving you the advantage of using it with another base.

Just screw the adapter to the base of the LED corn bulb and tighten up so the adapter will not be stuck into the base.

If the bulb does not light up, turn off the power check the tab inside the base and lift it up, as it might have been bent down by the previous bulb and now is not making connection with the center of the corn bulb base.
  • Availability: In stock

    Regular Price: $2.90

    Special Price $2.35

    
    


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    Customer Reviews

    Edison to Mogul Base Adapter Review by Jim
    Rate
    I had recently purchased a vintage bridge lamp that had a three-way mogul base and it was impossible to find an adapter that would allow me to use an LED three way bulb with an Edison base. This product works. I knew that I has seen one at a store some time back but everyone told me you would just have to use the ugly ceramic single adapter that would only give you access to a single bulb. Glad I found you and if I find anymore vintage lamps with the same problem, "I'll Be Back"(with apologies to Arnold).
    (Posted on 6/7/2016)

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    Common terms used in lighting, LED Technology and Glossary

    For those of you who need to understand this new world of LED lighting, there is some vocabulary you will need to know. We have given you some terminology that will help you  understand what its all about.

    LED

    LED stands for "light emitting diode." A diode is an electrical component with two terminals which conduct the electricity only in one direction. With an electrical current, the diode emits a bright light around the small bulb.


    Lumens vs Watts

    LEDs that are bright enough to replace incandescents for business that is, producing the same number of lumens as standard 40- or 60-watt bulbs---typically only use 9 to 12 watts. The U.S. Department of Energy advises that business that want to replace a 60-watt bulb should look for an LED that produces close to 800 lumens; for a 40-watt bulb, look for 450 lumens.


    Ballast

    In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw. Within a second the lamp would overheat and burn out.

    Thee are several types of ballasts,

    Instant start
    An instant start ballast does not preheat the electrodes, instead using a relatively high voltage (~600 V) to initiate the discharge arc. It is the most energy efficient type, but yields the fewest lamp-start cycles, as material is blasted from the surface of the cold electrodes each time the lamp is turned on. Instant-start ballasts are best suited to applications with long duty cycles, where the lamps are not frequently turned on and off.

    Rapid start
    A rapid start ballast applies voltage and heats the cathodes simultaneously. It provides superior lamp life and more cycle life, but uses slightly more energy as the cathodes in each end of the lamp continue to consume heating power as the lamp operates. A dimming circuit can be used with a dimming ballast, which maintains the heating current while allowing lamp current to be controlled.

    Programmed start
    A programmed-start ballast is a more advanced version of rapid start. This ballast applies power to the filaments first, it allows the cathodes to preheat and then applies voltage to the lamps to strike an arc. Lamp life typically operates up to 100,000 on/off cycles when using programmed start ballasts. Once started, filament voltage is reduced to increase operating efficiency.[5] This ballast gives the best life and most starts from lamps, and so is preferred for applications with very frequent power cycling such as vision examination rooms and restrooms with a motion detector switch.

    Hybrid
    A hybrid ballast has a magnetic core-and-coil transformer and an electronic switch for the electrode-heating circuit. Like a magnetic ballast, a hybrid unit operates at line power frequency—60 Hz in North America, for example. These types of ballasts, which are also referred to as “cathode-disconnect ballasts”, disconnect the electrode-heating circuit after they start the lamps.


    HID/HPS

    High Intensity Discharge bulb. These include the Metal Halide (MH) and High Presure Sodium (HPS) among other types of bulbs that use a mixture of gases that when electrically excited produce an arc that emmits light.

    The color of the light depends on the gases used in the arc tube.


    UL

    Underwriters Laboratory is the certification which indicates that a product meets certain standards that conform with insurance company requirements for safety. An LED bulb without this designation is not of high enough quality for insurance purposes and usually indicates an inferior product.


    Kwh

    Kilowatt per hour is how you are billed by your electric company. There is a cost per Kwh on your electric bill.

     

    Index        A B C D E F G H I J K L M N O P R S T U V W

    A

    Additive Color Model
    A type of RGB color model that describes how different proportions of red, green, and blue light combine to create colors. In the additive color model, combining red, green, and blue light produces white light.
    Ambient Temperature (Ta)
    The air temperature surrounding the device.
    Ampere (Amp)
    The unit for measuring rate of flow of electrical current: Current (Amps) = Power (Watts) / Voltage (Volts)
    ANSI Binning
    The system defined by the American National Standards Institute for the binning specifications for light emitting diodes.

     

    B Top

    Ballast
    In a fluorescent lighting system or HID bulbs, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw. Within a second the lamp would overheat and burn out.

    Bin (Binning)
    LED manufacturers sort their products into bins based on lumen output and color. Fixture manufacturers specify a range of bins from which they will accept LEDs. If they only accept fixtures from bins that are very close together, the diodes are more expensive, but result in a higher quality fixture. If fixtures are built with LEDs from a wider range of bins, cost and lead-time are reduced. Manufacturers may refer to their “tightly binned” products when they want to convey that theirs is a good quality product.

    Black Body / Black Body Radiator
    An object that absorbs all electromagnetic radiation falling on it. Because it reflects no light, a black body appears black. As a black body is heated to incandescence, it radiates light in a sequence of colors, from red to orange to yellow to white to blue, depending on its temperature. This color sequence describes a curve within a color space, known as the black-body curve.

    Black Body Curve
    A curve within a color space describing the sequence of colors emitted by a black-body radiator at different temperatures.

    Brightness
    Often used incorrectly with respect to illumination as a synonym for luminous flux, an objective measurement of the visible power of a light source. The term is correctly used when describing screen brightness in a display or television. (see Nits).

     

    C Top

    Case Temperature
    The temperature measured at the LED package or case.

    Chromaticity
    An objective specification of the quality of a color, independent of its luminance, and as determined by its or saturation and hue.

    Color Definition
    The color of uniformly illuminated objects described using three terms:

    Hue: Describes the situation when the appearance of different colors is similar (e.g. matching blues and pinks).

    Lightness: Describes a range of grayness between black and white.

    Chroma: Describes the degree of departure from gray of the same lightness and increasing color (e.g. red, redder, pure red).

    Color Gamut
    The range of colors within the CIE Chromaticity Diagram included when combining different sources.

    Color Model
    An abstract mathematical model describing the way colors can be represented as groups of values or color components. RGB (Red-Green-Blue) is a color model with three color components, and CMYK (Cyan-Magenta-Yellow and Key (Black)) is a color model with four color components.
    Color Rendering
    A general expression for the effect of a light source on the color appearance of objects.
    Color Rendering Index (CRI)
    A measure of the degree of color shift objects undergo when illuminated by the light source as compared with those same objects when illuminated by a reference source of comparable color temperature. The reference source has a CRI of 100.
    Color Spectrum / Visible Spectrum
    The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically between 390nm and 750nm.
    Color temperature
    The description used to describe the effect of heating an object until it glows incandescently, the emitted radiation, and apparent color, changes proportional to the temperature; easily envisioned when considering hot metal in a forge that glows red, then orange, and then white as the temperature increases.
    Conformal Phosphor Coating
    Phosphor application process that uniformly coats the LED chip with phosphor.
    Controller
    A device that controls the output of color-changing and tunable white lighting fixtures. Controllers typically have software components for configuring fixtures and designing and editing light shows, and hardware components for sending control data to fixtures.
    Cool White
    A description of a range of correlated color temperatures.
    Correlated Color Temperature (CCT)
    The absolute temperature of a blackbody whose chromaticity most nearly resembles that of the light source. Usually specified in Kelvin (K). The lower the Kelvin temperature, the warmer the light feels, or appears.

     

    D Top

    Delivered Light
    The amount of light a lighting fixture or lighting installation delivers to a target area or task surface, measured in footcandles (fc) or lux (lx).
    Diffuser
    An object with irregularities on a surface causing scattered reflections.
    Direct-View Lighting Fixtures
    Lighting fixtures intended for viewing, rather than for illumination. For example, arrays of direct-view fixtures or nodes are used in large-scale video displays, traffic signals, and signage applications.
    Directional Light Source
    A light source that emits light only in the direction it is pointed or oriented.
    Driver
    All LED fixtures include an LED driver or power supply. This driver can be integral to the fixture, separate from the fixture or remotely located. Typically, the driver is an important part of every LED system and you should remember it is a factor when using LED fixtures.

    E Top

    Efficacy
    The light output of a light source divided by the total electrical power input to that source, expressed in lumens per watt (lm/W).
    Efficiency
    The percentage of total lamp lumens that a lighting fixture, luminaire, or system emits, minus any blocked or wasted light. See Luminous efficiency.
    Epoxy
    Organic polymer frequently used for a dome or lens, often prone to optical decay over time, resulting in poor lumen maintenance. High quality LEDs such as LUXEON contain no epoxy in the optical system and deliver superior lumen maintenance.
    Eye-sensitivity Curve
    A bell-shaped curve describing the sensitivity of a human eye with normal vision to the spectrum of visible light. Also known as the eye-sensitivity curve. See spectral luminous efficiency function.
     

    F Top

    Flux / Luminous Flux
    Luminous flux is the measure of the perceived power of light, adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light
    Foot-Candle (Fc)
    The unit is defined as the amount of illumination the inside surface of a one-foot-radius sphere would be receiving if there were a uniform point source of one candela in the exact center of the sphere. Alternatively, it can be defined as the illuminance on a one-square foot surface of which there is a uniformly distributed flux of one lumen.
    Forward voltage
    LEDs are current driven devices. If an external current is passed through the device, a forward voltage will be developed across the diode.

    G Top

    Ghosting
    An effect that occurs when lighting fixtures in the OFF state faintly glow as a result of residual voltage in the circuit.
    Goniophotometer
    A photometric device for testing the luminous intensity distribution, efficiency, and luminous flux of luminaires.

    H Top

    Heat Sink
    A part of the thermal system that conducts or convects heat away from sensitive components, such as LEDs and electronics.

    HID
    High Intensity Discharge, usually referred to bulbs that use compressed gass and when voltage is applied creates a high intensity discharge or voltaic arch like in a lighting bolt and thus emmit light.

    High Power LED
    A high power LED, sometimes referred to as a power LED, is one that is driven at a current of 350 mA or higher.

    High-brightness
    High-brightness is a term that is often applied to an LED but has no measured meaning and does not indicate any level of performance.

    Hot / Cold Factor
    The relative light output performance at a temperature compared to the light output at a nominal or test temperature. For LUXEON products this is the relative light output at 100C Tj compared to 25C Tj. For “Hot Tested” products like LUXEON A it is the relative light output at 100C Tj compared to 85C Tj.
    HPS
    High Preasured Sodium, referred to bulbs that use sodium as presurized gass to produce the high intensity discharge.
    Hot Testing
    LED performance testing and specification at an elevated temperature of 85°C.

    I Top

    Illuminance
    The intensity of light falling on a surface area. If the area is measured in square feet, the unit of illuminance is footcandles (fc). If measured in square meters, the unit of illuminance is lux (lx).

    Illuminating Engineering Society of North America (IES)
    The recognized technical authority on illumination, communicating information on all aspects of good lighting practice to its members, to the lighting community, and to consumers through a variety of programs, publications, and services.

    Inboard Power Integration
    An approach to power management that integrates the power supply directly into a fixture’s circuitry, creating an efficient power stage that consolidates line voltage conversion and LED current regulation.

    Infrared (Near)
    Electromagnetic radiation with wavelength range from 700 nm – 3000 nm.

    J Top

    Junction Temperature
    Junction temperature, noted as Tj, is the temperature of the LED’s active region.

    K Top

    Kelvin Temperature
    Term and symbol (K) used to indicate the comparative color appearance of a light source when compared to a theoretical blackbody. Yellowish incandescent lamps are 3000K. Fluorescent light sources range from 3000K to 7500K and higher.

    Kelvin Temperature
    Term and symbol (K) used to indicate the comparative color appearance of a light source when compared to a theoretical blackbody. Yellowish incandescent lamps are 3000K. Fluorescent light sources range from 3000K to 7500K and higher.

    L Top

    LED
    A Light Emitting Diode (LED) is a solid-state semiconductor device that converts electrical energy directly into light. On its most basic level, the semiconductor is comprised of two regions. The p-region contains positive electrical charges while the n-region contains negative electrical charges. When voltage is applied and current begins to flow, the electrons move across the n region into the p region. The process of an electron moving through the p-n junction releases energy. The dispersion of this energy produces photons with visible wavelengths.

    LED Array
    An assembly of LED packages or dies on a printed circuit board or substrate, possibly with optical elements and additional thermal, mechanical, and electrical interfaces that are intended to connect to the load side of an LED driver.
    LED Chip (Chip)
    The light producing semiconductor device that may or may not be incorporated into an LED.

    LED Driver
    An electronic circuit that converts input power into a current source — a source in which current remains constant despite fluctuations in voltage. An LED driver protects LEDs from normal voltage fluctuations, overvoltages, and voltage spikes.

    LED Light Engine
    An integrated assembly comprised of LEDs or LED arrays, LED driver, and other optical, thermal, mechanical, and electrical components.

    LED Luminaire
    A complete lighting unit consisting of LED-based light emitting elements and a matched driver together with parts to distribut light, to position and protect the light emitting elements, and to connect the unit to a branch circuit. The LED based light emitting elements may take the form of LED packages, (components), LED arrays (modules) LED Light Engine, or LED lamps. The LED luminaire is intended to connect directly to a branch circuit.

    Light Emitting Diode (LED)
    A Light Emitting Diode (LED) is a solid-state semiconductor device that converts electrical energy directly into light. On its most basic level, the semiconductor is comprised of two regions. The p-region contains positive electrical charges while the n-region contains negative electrical charges. When voltage is applied and current begins to flow, the electrons move across the n region into the p region. The process of an electron moving through the p-n junction releases energy. The dispersion of this energy produces photons with visible wavelengths.

    L70

    L70 describes the brightness of an LED after a number of hours – often 50,000. If a product claims L70 after 50,000 hours, it means that after 50,000 hours of burning (nearly six years if the lights are on 24/7) the lights are now 70% as bright as they were when they were first installed. L70 doesn’t mean anything without the corresponding number of hours. You may also see terms such as L70 at 6,000 hours. Sometimes manufacturers will list L80 (or even L90) at 50,000 hours. This simply means that after 50,000 hours, the LEDs will be 80% (or 90%) as bright as they were initially. Be careful not to confuse L70 with LM79 or LM80.

    LM79

    This IES document applies to LED fixtures (but not to components.) It prescribes the approved method for “Electrical and Photometric Measurements of Solid-State Lighting Products.” In the beginning, LED products were the wild, wild west. Manufacturers claimed just about anything based on their own personal “test procedures.” LM79 gave structure to the chaos and today LM79 compliance can help ensure that you are comparing apples to apples when you read LED product literature.

    LM80

    This IES (Illuminating Engineering Society of North America)document describes the approved method for “Measuring Lumen Maintenance of LED Light Sources.” It applies to bare LED light sources and does not cover complete luminaires (fixtures.) The main story here is usable life. LED sources, like the old metal halide lamps, tend to fade over life instead of “burning out.” Again, when manufacturers are using the same test methodology, you can be comfortable when comparing products.



    Lumen (lm)
    The international (SI) unit of luminous flux or quantity of light and equals the amount of light that is spread over a square foot of surface by one candle power when all parts of the surface are exactly one foot from the light source. For example, a dinner candle provides about 12 lumens

    Lumen Depreciation
    Describes the percentage of light lost relative to the initial lumen output. See lumen maintenance for more information.

    Lumen Maintenance
    The luminous flux at a give time in the life of the LED. This is expressed as a percentage of the intial luminous flux.

    Lumen Maintenance Curve
    A graph illustrating the predicted average light output behavior over time of a single LED or solution.

    Lumen Output
    The total lumens emitted of a light source, system, or solution.

    Luminaire
    A lighting fixture complete with installed lamps and other accessories.

    Luminous Efficiency
    The percentage of total lamp lumens that a lighting fixture, luminaire, or system emits, minus any blocked or wasted light.

    Luminous Flux
    Luminous flux is the measure of the perceived power of light, adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light

    Lux (lx)
    The SI (International) unit of illuminance, or luminous flux incident on a unit area, frequently defined as one lumen per square meter (lm/m2).
     

    M Top

    MacAdam Ellipse
    A MacAdam ellipse is the region on a chromaticity diagram which contains all colors which are indistinguishable, to the average human eye, from the color at the center of the ellipse.

    MCPCB
    A widely accepted Printed Circuit Board (PCB) material with a Metal Core (MC) for better thermal performance, where LED chips are mounted.
     

    N Top

    Nits
    Measurement of display screen brightness. 1 nit = 1 cd/m2.

    NTSC Color Space
    The range of colors within the CIE Chromaticity Diagram included when combining phosphor based RGB sources in CRTs such a televisions and computer monitors.
     

    O Top

    Onboard Power Integration
    An approach to power management that integrates the power supply into a fixture’s housing, eliminating the need for an external power supply.

    Organic Light-emitting Diodes (OLED)
    Organic light-emitting diodes (OLEDs) are based on organic (carbon based) materials. In contrast to LEDs, which are small point sources, OLEDs are made in sheets which provide a diffuse area light source. OLED technology is developing rapidly and is increasingly used in display applications such as cell phones and PDA screens. However, OLEDs are still some years away from becoming a practical general illumination source. Additional advancements are needed in light output, color, efficiency, cost, and lifetime.
     

    P Top

    Power Factor
    The active power divided by the apparent power (i.e., product of the rms input voltage and rms input current of a driver).

    Power Factor Correction
    In an electronic device, such as an LED lighting fixture, a system of inductors, capacitors, or voltage converters to adjust the power factor of electronic devices toward the ideal power factor of 1.0.

    Pulse Width Modulation (PWM)
    A method, used by LED drivers, to regulate the amount of energy to the LEDs. PWM turns LEDs on and off at high frequency, reducing total ON time to achieve a desired dimming level.
     

    R Top

    Radiant Flux
    The total energy emitted by a light source across all wavelengths, measured in watts.

    Radiometry
    The measurement of radiant energy (including light) in terms of absolute power. Compare photometry.

    RGB Color Model
    An additive color model in which red, green, and blue light are added together in different proportions to produce a broad range of colors, including white.

    RGB White
    A method of producing white light by combining the output from red, green, and blue LEDs.
     

    S Top

    Solid-state lighting
    A description of the devices that do not contain moving parts or parts that can break, rupture, shatter, leak or contaminate the environment.

    Spectral Luminous Efficiency Function
    A bell-shaped curve describing the sensitivity of a human eye with normal vision to the spectrum of visible light. Also known as the eye-sensitivity curve.

    Steradian
    The standard unit of solid angle. Describes two-dimensional angular spans in three-dimensional space.

    Subtractive Color Model
    A color model that applies to reflective surfaces such as paints, dyes, and inks. Combining red, green, and blue in equal amounts produces black.
     

    T Top

    Ta
    Ambient Temperature
    Tc
    Case Temperature

    Thermal management
    Controlling the operating temperature of the product through design, examples includes heat sinks and improved airflow.

    Thermal Pad Temperature
    The measured temperature of the thermal pad during tesing. The thermal pad aides in the conduction of heat away from the component being cooled and into the heatsink. For more information refer to LUXEON® Rebel and LUXEON® Rebel ES Assemby and Handling Guide application brief 32.

    Thermal Resistance (K/W)
    The property of a material's ability to conduct heat.

    Tj
    Junction Temperature

    Tp
    Thermal Pad Temperature

    Tunable White Light
    White-light LED fixtures that combine channels of warm white and cool white LEDs to produce a range of color temperatures.
     

    U Top

    Ultraviolet (UV)
    Electromagnetic radiation with wavelength shorter than that of visible light.

    Useful Life
    The amount of light a lighting fixture delivers in an application, minus any wasted light.
     

    V Top

    Volt
    The term used to describe the electrical potential difference between oppositely charged conductors, for example there is a 1.5V potential between the top and bottom of an AAA battery.
     

    W Top

    Wall Plug Efficiency
    This typically refers to the effectiveness of converting electrical power to light output. It is defined as the ratio of the radiant flux to the input electrical power.

    Warm White
    A description of light with a correlated color temperature between 3000K and 3500K, usually perceived a slightly yellow.

    Watt
    The unit of electrical power as used by an electrical device during its operation. Many lamps come with rating in watts to indicate their power consumption.
     

    White Point
    The Coordinated Color Temperature (CCT) defined by a line perpendicular to the Planckian Black Body Curve and intersecting the measured chromaticity.
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    Reviews

    Customer Reviews

    Edison to Mogul Base Adapter Review by Jim
    Rate
    I had recently purchased a vintage bridge lamp that had a three-way mogul base and it was impossible to find an adapter that would allow me to use an LED three way bulb with an Edison base. This product works. I knew that I has seen one at a store some time back but everyone told me you would just have to use the ugly ceramic single adapter that would only give you access to a single bulb. Glad I found you and if I find anymore vintage lamps with the same problem, "I'll Be Back"(with apologies to Arnold).
    (Posted on 6/7/2016)

    Write Your Own Review

    You're reviewing: Edison to Mogul Base Adapter

    How do you rate this product? *

      1 star 2 stars 3 stars 4 stars 5 stars
    Rate
    FAQ

    Common terms used in lighting, LED Technology and Glossary

    For those of you who need to understand this new world of LED lighting, there is some vocabulary you will need to know. We have given you some terminology that will help you  understand what its all about.

    LED

    LED stands for "light emitting diode." A diode is an electrical component with two terminals which conduct the electricity only in one direction. With an electrical current, the diode emits a bright light around the small bulb.


    Lumens vs Watts

    LEDs that are bright enough to replace incandescents for business that is, producing the same number of lumens as standard 40- or 60-watt bulbs---typically only use 9 to 12 watts. The U.S. Department of Energy advises that business that want to replace a 60-watt bulb should look for an LED that produces close to 800 lumens; for a 40-watt bulb, look for 450 lumens.


    Ballast

    In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw. Within a second the lamp would overheat and burn out.

    Thee are several types of ballasts,

    Instant start
    An instant start ballast does not preheat the electrodes, instead using a relatively high voltage (~600 V) to initiate the discharge arc. It is the most energy efficient type, but yields the fewest lamp-start cycles, as material is blasted from the surface of the cold electrodes each time the lamp is turned on. Instant-start ballasts are best suited to applications with long duty cycles, where the lamps are not frequently turned on and off.

    Rapid start
    A rapid start ballast applies voltage and heats the cathodes simultaneously. It provides superior lamp life and more cycle life, but uses slightly more energy as the cathodes in each end of the lamp continue to consume heating power as the lamp operates. A dimming circuit can be used with a dimming ballast, which maintains the heating current while allowing lamp current to be controlled.

    Programmed start
    A programmed-start ballast is a more advanced version of rapid start. This ballast applies power to the filaments first, it allows the cathodes to preheat and then applies voltage to the lamps to strike an arc. Lamp life typically operates up to 100,000 on/off cycles when using programmed start ballasts. Once started, filament voltage is reduced to increase operating efficiency.[5] This ballast gives the best life and most starts from lamps, and so is preferred for applications with very frequent power cycling such as vision examination rooms and restrooms with a motion detector switch.

    Hybrid
    A hybrid ballast has a magnetic core-and-coil transformer and an electronic switch for the electrode-heating circuit. Like a magnetic ballast, a hybrid unit operates at line power frequency—60 Hz in North America, for example. These types of ballasts, which are also referred to as “cathode-disconnect ballasts”, disconnect the electrode-heating circuit after they start the lamps.


    HID/HPS

    High Intensity Discharge bulb. These include the Metal Halide (MH) and High Presure Sodium (HPS) among other types of bulbs that use a mixture of gases that when electrically excited produce an arc that emmits light.

    The color of the light depends on the gases used in the arc tube.


    UL

    Underwriters Laboratory is the certification which indicates that a product meets certain standards that conform with insurance company requirements for safety. An LED bulb without this designation is not of high enough quality for insurance purposes and usually indicates an inferior product.


    Kwh

    Kilowatt per hour is how you are billed by your electric company. There is a cost per Kwh on your electric bill.

     

    Index        A B C D E F G H I J K L M N O P R S T U V W

    A

    Additive Color Model
    A type of RGB color model that describes how different proportions of red, green, and blue light combine to create colors. In the additive color model, combining red, green, and blue light produces white light.
    Ambient Temperature (Ta)
    The air temperature surrounding the device.
    Ampere (Amp)
    The unit for measuring rate of flow of electrical current: Current (Amps) = Power (Watts) / Voltage (Volts)
    ANSI Binning
    The system defined by the American National Standards Institute for the binning specifications for light emitting diodes.

     

    B Top

    Ballast
    In a fluorescent lighting system or HID bulbs, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw. Within a second the lamp would overheat and burn out.

    Bin (Binning)
    LED manufacturers sort their products into bins based on lumen output and color. Fixture manufacturers specify a range of bins from which they will accept LEDs. If they only accept fixtures from bins that are very close together, the diodes are more expensive, but result in a higher quality fixture. If fixtures are built with LEDs from a wider range of bins, cost and lead-time are reduced. Manufacturers may refer to their “tightly binned” products when they want to convey that theirs is a good quality product.

    Black Body / Black Body Radiator
    An object that absorbs all electromagnetic radiation falling on it. Because it reflects no light, a black body appears black. As a black body is heated to incandescence, it radiates light in a sequence of colors, from red to orange to yellow to white to blue, depending on its temperature. This color sequence describes a curve within a color space, known as the black-body curve.

    Black Body Curve
    A curve within a color space describing the sequence of colors emitted by a black-body radiator at different temperatures.

    Brightness
    Often used incorrectly with respect to illumination as a synonym for luminous flux, an objective measurement of the visible power of a light source. The term is correctly used when describing screen brightness in a display or television. (see Nits).

     

    C Top

    Case Temperature
    The temperature measured at the LED package or case.

    Chromaticity
    An objective specification of the quality of a color, independent of its luminance, and as determined by its or saturation and hue.

    Color Definition
    The color of uniformly illuminated objects described using three terms:

    Hue: Describes the situation when the appearance of different colors is similar (e.g. matching blues and pinks).

    Lightness: Describes a range of grayness between black and white.

    Chroma: Describes the degree of departure from gray of the same lightness and increasing color (e.g. red, redder, pure red).

    Color Gamut
    The range of colors within the CIE Chromaticity Diagram included when combining different sources.

    Color Model
    An abstract mathematical model describing the way colors can be represented as groups of values or color components. RGB (Red-Green-Blue) is a color model with three color components, and CMYK (Cyan-Magenta-Yellow and Key (Black)) is a color model with four color components.
    Color Rendering
    A general expression for the effect of a light source on the color appearance of objects.
    Color Rendering Index (CRI)
    A measure of the degree of color shift objects undergo when illuminated by the light source as compared with those same objects when illuminated by a reference source of comparable color temperature. The reference source has a CRI of 100.
    Color Spectrum / Visible Spectrum
    The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically between 390nm and 750nm.
    Color temperature
    The description used to describe the effect of heating an object until it glows incandescently, the emitted radiation, and apparent color, changes proportional to the temperature; easily envisioned when considering hot metal in a forge that glows red, then orange, and then white as the temperature increases.
    Conformal Phosphor Coating
    Phosphor application process that uniformly coats the LED chip with phosphor.
    Controller
    A device that controls the output of color-changing and tunable white lighting fixtures. Controllers typically have software components for configuring fixtures and designing and editing light shows, and hardware components for sending control data to fixtures.
    Cool White
    A description of a range of correlated color temperatures.
    Correlated Color Temperature (CCT)
    The absolute temperature of a blackbody whose chromaticity most nearly resembles that of the light source. Usually specified in Kelvin (K). The lower the Kelvin temperature, the warmer the light feels, or appears.

     

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    Delivered Light
    The amount of light a lighting fixture or lighting installation delivers to a target area or task surface, measured in footcandles (fc) or lux (lx).
    Diffuser
    An object with irregularities on a surface causing scattered reflections.
    Direct-View Lighting Fixtures
    Lighting fixtures intended for viewing, rather than for illumination. For example, arrays of direct-view fixtures or nodes are used in large-scale video displays, traffic signals, and signage applications.
    Directional Light Source
    A light source that emits light only in the direction it is pointed or oriented.
    Driver
    All LED fixtures include an LED driver or power supply. This driver can be integral to the fixture, separate from the fixture or remotely located. Typically, the driver is an important part of every LED system and you should remember it is a factor when using LED fixtures.

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    Efficacy
    The light output of a light source divided by the total electrical power input to that source, expressed in lumens per watt (lm/W).
    Efficiency
    The percentage of total lamp lumens that a lighting fixture, luminaire, or system emits, minus any blocked or wasted light. See Luminous efficiency.
    Epoxy
    Organic polymer frequently used for a dome or lens, often prone to optical decay over time, resulting in poor lumen maintenance. High quality LEDs such as LUXEON contain no epoxy in the optical system and deliver superior lumen maintenance.
    Eye-sensitivity Curve
    A bell-shaped curve describing the sensitivity of a human eye with normal vision to the spectrum of visible light. Also known as the eye-sensitivity curve. See spectral luminous efficiency function.
     

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    Flux / Luminous Flux
    Luminous flux is the measure of the perceived power of light, adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light
    Foot-Candle (Fc)
    The unit is defined as the amount of illumination the inside surface of a one-foot-radius sphere would be receiving if there were a uniform point source of one candela in the exact center of the sphere. Alternatively, it can be defined as the illuminance on a one-square foot surface of which there is a uniformly distributed flux of one lumen.
    Forward voltage
    LEDs are current driven devices. If an external current is passed through the device, a forward voltage will be developed across the diode.

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    Ghosting
    An effect that occurs when lighting fixtures in the OFF state faintly glow as a result of residual voltage in the circuit.
    Goniophotometer
    A photometric device for testing the luminous intensity distribution, efficiency, and luminous flux of luminaires.

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    Heat Sink
    A part of the thermal system that conducts or convects heat away from sensitive components, such as LEDs and electronics.

    HID
    High Intensity Discharge, usually referred to bulbs that use compressed gass and when voltage is applied creates a high intensity discharge or voltaic arch like in a lighting bolt and thus emmit light.

    High Power LED
    A high power LED, sometimes referred to as a power LED, is one that is driven at a current of 350 mA or higher.

    High-brightness
    High-brightness is a term that is often applied to an LED but has no measured meaning and does not indicate any level of performance.

    Hot / Cold Factor
    The relative light output performance at a temperature compared to the light output at a nominal or test temperature. For LUXEON products this is the relative light output at 100C Tj compared to 25C Tj. For “Hot Tested” products like LUXEON A it is the relative light output at 100C Tj compared to 85C Tj.
    HPS
    High Preasured Sodium, referred to bulbs that use sodium as presurized gass to produce the high intensity discharge.
    Hot Testing
    LED performance testing and specification at an elevated temperature of 85°C.

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    Illuminance
    The intensity of light falling on a surface area. If the area is measured in square feet, the unit of illuminance is footcandles (fc). If measured in square meters, the unit of illuminance is lux (lx).

    Illuminating Engineering Society of North America (IES)
    The recognized technical authority on illumination, communicating information on all aspects of good lighting practice to its members, to the lighting community, and to consumers through a variety of programs, publications, and services.

    Inboard Power Integration
    An approach to power management that integrates the power supply directly into a fixture’s circuitry, creating an efficient power stage that consolidates line voltage conversion and LED current regulation.

    Infrared (Near)
    Electromagnetic radiation with wavelength range from 700 nm – 3000 nm.

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    Junction Temperature
    Junction temperature, noted as Tj, is the temperature of the LED’s active region.

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    Kelvin Temperature
    Term and symbol (K) used to indicate the comparative color appearance of a light source when compared to a theoretical blackbody. Yellowish incandescent lamps are 3000K. Fluorescent light sources range from 3000K to 7500K and higher.

    Kelvin Temperature
    Term and symbol (K) used to indicate the comparative color appearance of a light source when compared to a theoretical blackbody. Yellowish incandescent lamps are 3000K. Fluorescent light sources range from 3000K to 7500K and higher.

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    LED
    A Light Emitting Diode (LED) is a solid-state semiconductor device that converts electrical energy directly into light. On its most basic level, the semiconductor is comprised of two regions. The p-region contains positive electrical charges while the n-region contains negative electrical charges. When voltage is applied and current begins to flow, the electrons move across the n region into the p region. The process of an electron moving through the p-n junction releases energy. The dispersion of this energy produces photons with visible wavelengths.

    LED Array
    An assembly of LED packages or dies on a printed circuit board or substrate, possibly with optical elements and additional thermal, mechanical, and electrical interfaces that are intended to connect to the load side of an LED driver.
    LED Chip (Chip)
    The light producing semiconductor device that may or may not be incorporated into an LED.

    LED Driver
    An electronic circuit that converts input power into a current source — a source in which current remains constant despite fluctuations in voltage. An LED driver protects LEDs from normal voltage fluctuations, overvoltages, and voltage spikes.

    LED Light Engine
    An integrated assembly comprised of LEDs or LED arrays, LED driver, and other optical, thermal, mechanical, and electrical components.

    LED Luminaire
    A complete lighting unit consisting of LED-based light emitting elements and a matched driver together with parts to distribut light, to position and protect the light emitting elements, and to connect the unit to a branch circuit. The LED based light emitting elements may take the form of LED packages, (components), LED arrays (modules) LED Light Engine, or LED lamps. The LED luminaire is intended to connect directly to a branch circuit.

    Light Emitting Diode (LED)
    A Light Emitting Diode (LED) is a solid-state semiconductor device that converts electrical energy directly into light. On its most basic level, the semiconductor is comprised of two regions. The p-region contains positive electrical charges while the n-region contains negative electrical charges. When voltage is applied and current begins to flow, the electrons move across the n region into the p region. The process of an electron moving through the p-n junction releases energy. The dispersion of this energy produces photons with visible wavelengths.

    L70

    L70 describes the brightness of an LED after a number of hours – often 50,000. If a product claims L70 after 50,000 hours, it means that after 50,000 hours of burning (nearly six years if the lights are on 24/7) the lights are now 70% as bright as they were when they were first installed. L70 doesn’t mean anything without the corresponding number of hours. You may also see terms such as L70 at 6,000 hours. Sometimes manufacturers will list L80 (or even L90) at 50,000 hours. This simply means that after 50,000 hours, the LEDs will be 80% (or 90%) as bright as they were initially. Be careful not to confuse L70 with LM79 or LM80.

    LM79

    This IES document applies to LED fixtures (but not to components.) It prescribes the approved method for “Electrical and Photometric Measurements of Solid-State Lighting Products.” In the beginning, LED products were the wild, wild west. Manufacturers claimed just about anything based on their own personal “test procedures.” LM79 gave structure to the chaos and today LM79 compliance can help ensure that you are comparing apples to apples when you read LED product literature.

    LM80

    This IES (Illuminating Engineering Society of North America)document describes the approved method for “Measuring Lumen Maintenance of LED Light Sources.” It applies to bare LED light sources and does not cover complete luminaires (fixtures.) The main story here is usable life. LED sources, like the old metal halide lamps, tend to fade over life instead of “burning out.” Again, when manufacturers are using the same test methodology, you can be comfortable when comparing products.



    Lumen (lm)
    The international (SI) unit of luminous flux or quantity of light and equals the amount of light that is spread over a square foot of surface by one candle power when all parts of the surface are exactly one foot from the light source. For example, a dinner candle provides about 12 lumens

    Lumen Depreciation
    Describes the percentage of light lost relative to the initial lumen output. See lumen maintenance for more information.

    Lumen Maintenance
    The luminous flux at a give time in the life of the LED. This is expressed as a percentage of the intial luminous flux.

    Lumen Maintenance Curve
    A graph illustrating the predicted average light output behavior over time of a single LED or solution.

    Lumen Output
    The total lumens emitted of a light source, system, or solution.

    Luminaire
    A lighting fixture complete with installed lamps and other accessories.

    Luminous Efficiency
    The percentage of total lamp lumens that a lighting fixture, luminaire, or system emits, minus any blocked or wasted light.

    Luminous Flux
    Luminous flux is the measure of the perceived power of light, adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light

    Lux (lx)
    The SI (International) unit of illuminance, or luminous flux incident on a unit area, frequently defined as one lumen per square meter (lm/m2).
     

    M Top

    MacAdam Ellipse
    A MacAdam ellipse is the region on a chromaticity diagram which contains all colors which are indistinguishable, to the average human eye, from the color at the center of the ellipse.

    MCPCB
    A widely accepted Printed Circuit Board (PCB) material with a Metal Core (MC) for better thermal performance, where LED chips are mounted.
     

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    Nits
    Measurement of display screen brightness. 1 nit = 1 cd/m2.

    NTSC Color Space
    The range of colors within the CIE Chromaticity Diagram included when combining phosphor based RGB sources in CRTs such a televisions and computer monitors.
     

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    Onboard Power Integration
    An approach to power management that integrates the power supply into a fixture’s housing, eliminating the need for an external power supply.

    Organic Light-emitting Diodes (OLED)
    Organic light-emitting diodes (OLEDs) are based on organic (carbon based) materials. In contrast to LEDs, which are small point sources, OLEDs are made in sheets which provide a diffuse area light source. OLED technology is developing rapidly and is increasingly used in display applications such as cell phones and PDA screens. However, OLEDs are still some years away from becoming a practical general illumination source. Additional advancements are needed in light output, color, efficiency, cost, and lifetime.
     

    P Top

    Power Factor
    The active power divided by the apparent power (i.e., product of the rms input voltage and rms input current of a driver).

    Power Factor Correction
    In an electronic device, such as an LED lighting fixture, a system of inductors, capacitors, or voltage converters to adjust the power factor of electronic devices toward the ideal power factor of 1.0.

    Pulse Width Modulation (PWM)
    A method, used by LED drivers, to regulate the amount of energy to the LEDs. PWM turns LEDs on and off at high frequency, reducing total ON time to achieve a desired dimming level.
     

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    Radiant Flux
    The total energy emitted by a light source across all wavelengths, measured in watts.

    Radiometry
    The measurement of radiant energy (including light) in terms of absolute power. Compare photometry.

    RGB Color Model
    An additive color model in which red, green, and blue light are added together in different proportions to produce a broad range of colors, including white.

    RGB White
    A method of producing white light by combining the output from red, green, and blue LEDs.
     

    S Top

    Solid-state lighting
    A description of the devices that do not contain moving parts or parts that can break, rupture, shatter, leak or contaminate the environment.

    Spectral Luminous Efficiency Function
    A bell-shaped curve describing the sensitivity of a human eye with normal vision to the spectrum of visible light. Also known as the eye-sensitivity curve.

    Steradian
    The standard unit of solid angle. Describes two-dimensional angular spans in three-dimensional space.

    Subtractive Color Model
    A color model that applies to reflective surfaces such as paints, dyes, and inks. Combining red, green, and blue in equal amounts produces black.
     

    T Top

    Ta
    Ambient Temperature
    Tc
    Case Temperature

    Thermal management
    Controlling the operating temperature of the product through design, examples includes heat sinks and improved airflow.

    Thermal Pad Temperature
    The measured temperature of the thermal pad during tesing. The thermal pad aides in the conduction of heat away from the component being cooled and into the heatsink. For more information refer to LUXEON® Rebel and LUXEON® Rebel ES Assemby and Handling Guide application brief 32.

    Thermal Resistance (K/W)
    The property of a material's ability to conduct heat.

    Tj
    Junction Temperature

    Tp
    Thermal Pad Temperature

    Tunable White Light
    White-light LED fixtures that combine channels of warm white and cool white LEDs to produce a range of color temperatures.
     

    U Top

    Ultraviolet (UV)
    Electromagnetic radiation with wavelength shorter than that of visible light.

    Useful Life
    The amount of light a lighting fixture delivers in an application, minus any wasted light.
     

    V Top

    Volt
    The term used to describe the electrical potential difference between oppositely charged conductors, for example there is a 1.5V potential between the top and bottom of an AAA battery.
     

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    Wall Plug Efficiency
    This typically refers to the effectiveness of converting electrical power to light output. It is defined as the ratio of the radiant flux to the input electrical power.

    Warm White
    A description of light with a correlated color temperature between 3000K and 3500K, usually perceived a slightly yellow.

    Watt
    The unit of electrical power as used by an electrical device during its operation. Many lamps come with rating in watts to indicate their power consumption.
     

    White Point
    The Coordinated Color Temperature (CCT) defined by a line perpendicular to the Planckian Black Body Curve and intersecting the measured chromaticity.
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