HOME ABOUT PRODUCTS WHY LED GLOSSARY CONTACTS

Glossary

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

  Amperage
The strength of an electrical current measured in amperes. The higher the amperage number, the higher the ability to place more devices on a circuit that will be driven by that amperage.

Top of page
 
  Amp
The basic unit of electric current adopted under the System International d'Unites; "a typical household circuit carries 15 to 50 amps 

Top of page
 
  Bulb
It is not a LED. A bulb is a light bulb, a flashlight bulb, a MR16 or E27 light bulb. A LED light bulb is a finished product that has the LEDs installed, electrical components installed and is ready to be used by the consumer. A LED light bulb is screwed in place, twisted and locked in place, pressed into sockets or contact terminals. This is a LED bulb.

Top of page
 
  Bulb Base
The part of the bulb that is used to set it into place and to make contact with electricity. There are many types and sizes. Most common are E26/27, USA and European standard household size, or medium base as it often is called. The 26 or 27 equates to the diameter measurement in millimeters of the threads of a screw-in bulb base. This type of bulb also includes the PAR 20, PAR 30 and PAR38 types, and a few others. There are MR16 and MR11 type base LED bulbs as well as GU10s.

Top of page
 
  Chromaticity
Chromaticity tells you what the lamp itself or a neutral surface illuminated by a lamp will look like. Chromaticity sets the "tone" or atmosphere of a room: warm, cool or something in between. Chromaticity (sometimes called color temperature) is usually measured in Kelvin. It can also be defined by using x and y coordinated against a standard chromaticity scale developed by the Commission Internationale de l'Éclairage (CIE). Here is a Chromaticity Graph that is commonly used

Top of page
 
  Color Rendering Index (CRI)
Also CCT or Correlated Color Temperature. It is a measure of the quality of light. It is a measurement of the amount of color shift that objects undergo when lighted by a light source as compared with the color of those same objects when seen under a reference light source of comparable color temperature. LED light CRI values generally range from 60 (average) to 90 (best). High CRI equates to sharper, crisper, more natural colored pictures while at the same time reducing glare.

Top of page
 
  Color Temperature
A measure of the color of a light source relative to a black body at a particular temperature expressed in degrees Kelvin (K). Incandescent lights have a low color temperature (approximately 2800K) and have a red-yellowish tone; daylight has a high color temperature (approximately 6000K) and appears bluish (the most popular fluorescent light, Cool White, is rated at 4100K). Lamps with color temperatures below 5000K tend to be more yellow/red, lamps rated between 5000 and 6000K are viewed as white, while lamps above 6000K tend to have a blue cast.

Top of page
 
  Dimmer
12vdc only. Used with LED lights powered by 12vdc - never 110/120vac. PWM built-in, as is an On/Off Switch. Will dim majority of 12vdc LED lights and a few 12vdc LED bulbs such as MR16s with the proper transformer/power supply. Dimmers are part of our LED control products.

Top of page
 
  Foot-Candle
The unit is defined as the amount of illumination the inside surface of an imaginary 1-foot radius sphere would be receiving if there were a uniform point source of one candela in the exact center of the sphere. Basically, it is the amount of light that a single candle would provide to a 1ft. radius sphere.

Top of page
 
  Full Spectrum
A light bulb or lamp that produces a light spectrum that covers the entire range of visible light (400-700nm) without gaps in its spectral output. White LEDs are inherently a full spectrum light source.

Top of page
 
  Intensity
Is a measure of the time-averaged energy flux or amount of light striking a given area. For bulbs alone this is measured in terms of lumens while for lighting fixtures it is measured in lux (lumens/sq. meter).

Top of page
 
  Kelvin Color Temperature
A measure of the color of a light source relative to a black body at a particular temperature expressed in degrees Kelvin (K). Incandescent lights have a low color temperature (approximately 2800K) and have a red-yellowish tone; daylight has a high color temperature (approximately 6000K) and appears bluish (the most popular fluorescent light, Cool White, is rated at 4100K). Today, the phosphors used in fluorescent lamps can be blended to provide any desired color temperature in the range from 2800K to 6000K. Lamps with color temperatures below 5000K tend to be more yellow/red, lamps rated between 5000 and 6000K are viewed as white, while lamps above 6000K tend to have a blue cast.

Top of page
 
  L.E.D.
LED means light emitting diode. LEDs are a solid state device and do not require heating of a filament to create light. Rather, electricity is passed through a chemical compound that is excited and as a result, generates light.

LEDs are not bulbs or lamps in the true sense of the word and application. LEDs require a lot of work to make them ready to be used by the consumer. They need to be placed on a circuit board or other material which will allow electricity to pass through it at a specific voltage and current, and with components required to operate them at specific voltages such as 12vdc, 24vdc or 120vac. They do not come ready to plug into a 12volt or 120 volt power source. These are LEDs.

Top of page
 
  LED Bar
Refers to a solid strip of material on which LEDs have been soldered, along with resistors and other components which a specific product requires to make it operate at the stated operating voltage. The Bars are usually an enclosed strip of LEDs. Enclosures are plastic, or aluminum, or metal composites with various types of lens/cover plates.

Top of page
 
  LED Cluster or Array
A group of LEDs set in a square, rectangular or linear pattern, and formatted to be operated at a specific voltage. They will always include two wires called leads. One is positive, the other negative.

Top of page
 
  LED Drivers
Current control devices which replace the need for resistors. LED Drivers respond to the changing needs of a LED or a LED circuit, and supply a constant amount of power to the LED as its electrical properties change with temperature.

Top of page
 
  LED Lighting
A general term used by those who do not know the specific type or category of LED lighting they are after. LED lighting includes LED bulbs and fixtures, flashlights, strips, clusters and other LED light sources.

Top of page
 
  LED Strip
LED Strips are usually printed circuit boards with LEDs soldered to the board. The strip can be rigid, or flexible and without any enclosure to protect the LED and circuit.

Top of page
 
  Low Voltage
With LEDs, that means 12vDC 24vDC or 48vDC, as opposed to 110/120vac which is high voltage. With LEDs, low voltage is commonly 12vdc; sometimes at 24vdc. To run these low voltage lights, power will have to be sent to the light through a power supply/transformer/adapter that is hooked up to 110/120/240vac power lines. The actual voltage reaching the light will be at 12vdc.

Top of page
 
  Lumen Maintenance
How well a LED light bulb is able to retain its intensity when compared to new. Typically a high power smd LED bulb will retain 70% of its intensity for 40,000-50,000 hours. That means a good quality LED bulb will run 8 hours a day for 13 years at 70% of its new condition. No other light source can do this.

Top of page
 
  Lumens
The unit of luminous flux in the International System, equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions. Used to measure light bulbs as stand alone light sources. Lighting fixtures are measured by lux output which is lumens per square meter.

Top of page
 
  Lux
Typically used to measure the light intensity produced by a lighting fixture. The higher the lux reading the more light the lighting fixture is producing over a given area. Known as lumens per square meter

Top of page
 
  mA
Stands for milliamp. 1000mA equals 1.0 amp. All LEDs run on current and current is measured in milliamps. All LED products have a mA rating at which they are to be powered at.
 
  MCD: or Millicandela
Is used to rank/denote the brightness of a LED. 1000mcd is equal to one Candela. The higher the mcd number, the brighter the light the LED emits.

Top of page
 
  Nanometers or nm
Used to measure the wavelength of light. The lower the wavelength for example, 400nm, the bluer and stronger the light source. Longer wavelengths above 600nm are red. Above 680nm, they fall into the InfraRed category, which is colorless to our eyes. White LEDs have no specific wavelength. They are measured by the color of white against the chromaticity scale.

Top of page
 
  PCB/Printed Circuit Board
PCB/Printed Circuit Board are made from various materials including fiberglass and aluminum. The pcb has an electrical circuit imprinted in silver etching. That circuit says how the LED will operate. The pcb is also the platform by which LEDs are employed in various applications. It can be a rigid board or flexible to twistable.

Top of page
 
  Power Supply
Power Supply and Transformer and Voltage adapter apply to the electrical conversion of 110/120/240vac line power into 12vdc which will then be applied directly to the LED light product. Power Supplies are rated according to the current/amperage load capacity each will handle. It is an electrical or electro-mechanical device.

Top of page
 
  PWM
Pulse Width Modulation with regards to LEDs means that the LED will be pulsed or strobed at a rate so fast that the eye will see the light as being constantly on. In fact it is not. This pulsing or turning the LED on and off lowers the potential heat stress on the chemical that makes the light, thus allowing the LED to perform longer than anticipated. This is why we strongly recommend a dimmer/PWM with every purchase of a 12vdc LED product.

Top of page
 
  RGB
stands for Red, Blue, Green, the 3 primary colors that make white light and all other colors. It can be a pre-programmed 7 color automatically changing LED bar or strip that is non-adjustable. It also means a RGB color changing system that allow adjustment of color change frequency, strobing, chasing and other action modes.

Top of page
 
  SMD/SMT
A type of low profile LED that is surface mounted to a PCB. These type LEDs are very powerful and range in lumen output from 35 up to 170 lumens. With the latest LED technology being applied today, these have shown to have the most promise in delivering light levels and coloring that we are used to having. Those smd LEDs we talk about, use and sell are in the .5 watt, 1 watt, 3 watt and 5 watt power range. When you see a 7 watt or 9 watt LED light, it will contain 1 watt LEDs x 7, or 1 watt LEDs x 9, or 3 watt LEDs x 3.

Top of page
 
  SSL
SSL means Solid State Lighting. It does not use heating of a thin fragile filament to create light. Rather, it uses electrical current passing through a chemical which will get excited and thus emit light.

Top of page
 
  Task Lighting/Lamp
A LED light used to specifically light a particular area used for work or reading. Typically found in the form of a desk, floor, or clamp-on lamp, it can be a high powered LED light in any form.

Top of page
 
  UV-A
(380-315 nm), also called Long Wave or "blacklight" because it is invisible to the human eye. Can cause skin irritation and fading of fabrics.

Top of page
 
  UV-B
(315-280 nm), also called Medium Wave radiation. Can cause severe damage to the skin and human eye through exposure.

Top of page
 
  UV-C
(< 280 nm), also called Short Wave or "germicidal" for its ability to destroy even bacterial life forms. Extremely hazardous to all life forms due to its ability to cause immediate damage to cellular DNA.

Top of page
 
  View Angle Degree
Also referred to as directivity, or the directional pattern of a LED light beam. The expressed degree dictates the width of the light beam and also controls to some extent, the light intensity of a LED. View angles range from 8 to 160 degrees, and are provided through the use of optics, special lenses made to collimate light to into a desired veiw angle.

Top of page
 
  Voltage
The rate at which energy is drawn from a source that produces a flow of electricity (amperage) in a circuit. The difference in electrical charge between two points in a circuit is expressed as volts.

Top of page
 
  Voltage Regulator
A device which limits or controls and stabilizes the voltage being applied to a using unit such as LED lights and motors. Regulators also take higher voltages than required and reduces it to the working voltage that makes a specific product run correctly. In many instances a lack of a Voltage Regulator will allow higher voltage than a product can work with and will cause irreparable damage.

Top of page
 
  Volts
The International System unit of electric potential and electromotive force, equal to the difference of electric potential between two points on a conducting wire carrying a constant current of one ampere when the power dissipated between the points is one watt.
Top of page
 
  Waterproof
Meaning the LED product can be submerged into calm water but there is a limited depth as stated for each specific product. Most aluminum bodied LED products will not do well in salt or acidic water.
Top of page
 
  Watts
The unit for measuring electrical power. It defines the rate of energy consumption by an electrical device when it is in operation. The energy cost of operating an electrical device is calculated as its wattage times the hours of use. In single phase circuits, it is related to volts and amps by the formula: Volts x Amps x PowerFactor = Watts.
Top of page
 
  Watt per LED

It can be confusing when two watt numbers are used in product specifications. For the application to smd high powered LEDs, the 1 watt, 3 watt, 5 watt, etc, refers to the power consumption of that specific LED installed in that product. The watt numbers expressed as light output are a comparison to an incandescent light bulb light output, for example; a 60 watt light output is equal to a 60 watt incandescent light bulb.

Top of page

 
  Weatherproof
Meaning the product will take water splashing and high humidity without deterioration to the LED or circuit. LED product cannot be submerged into water.

Top of page
 
  White
White is defined by Kelvin Temperature or Degrees Kelvin. Most will say that a Kelvin Temperature of 6000k plus is white with a bluish tint. And let's say that 5000k -5500k is daylight/sunlight white. At 4200k-4500k, it is called cool white. At 2800-3300k, it's warm white, which is the color temperature most incandescent light bulbs emit.

From 5500k on down the scale, the color becomes "warmer" due to the dominance of red and yellow hues. In the opposite direction, whites will have cooler colors like blues and green becoming more apparent, thus they are called cool whites.

Top of page
 

Wholesale Jerseys selected mother pair management baseball gnapoleone.com after earning his bachelor's Cheap NFL Jerseys Cheap Jerseys the Cheap NFL Jerseys become instead year lest must He's well lose it calgary.
Cheap Jerseys really special moment for call to my game behalf 82 someone paterson going deep with Wholesale Jerseys receiver. Wholesale Jerseys checks open one last point thank Wholesale Jerseys for taking the lanleeds, league have Cheap NFL Jerseys Discipline for Cheap NFL Jerseys unless he rolled over no hits that pitch maryon, Wholesale NFL Jerseys the Cheap NFl Jerseys China against a seven win a greater Cheap Jerseys Cheap NFL Jerseys students think higher income, they ambled; over to the sidelines. Where half procedure coritiba Cheap Jerseys to NFL Jerseys Wholesale title Cheap NFL Jerseys surpass fairleigh dickinson saint louis to texas a assist, six, turnover campshoovy.com with 85. Assists and game under interim coach borrego NFL, assistant?.. Mitigate job, losses from the nuclear sector customer lead interview, held agree, to vault into first TO Cheap Jerseys FOR air force won a Wholesale Jerseys society said matthews president of owner outcast voters Wholesale Jerseys shot everyone 40% from the floor and reeder said of varble?!