LED Strip Lights

LED Strip Lights

A light-emitting diode (LED) strip light, also known as LED tape and ribbon light, is a flexible circuit board that contains surface mount device (SMD) LEDs among other components. LED strip lighting usually has an adhesive backing, allowing it to be used in traditional applications such as accent lighting, backlighting and decorative lighting. The increased efficiency and power of modern LED strips also make them useful for lighting applications that requires high brightness such as task lighting and replacements for fluorescent and halogen lights. Ultraviolet LED strips are  used for manufacturing inspections and growing plants.

Colour

The colour is one of the most significant factors in the design of LED strips. These designs may be classified as single-colour, multi colour and red-green-blue (RGB).

All of the LEDs in a single-colour strip are the same colour, usually with a colour temperature between 2700K and 6500K. White is the most common colour for a LED strip, although it can be any colour in the visible spectrum.

The LEDs in a multicolour LED strip can display red, green, blue and white. These LEDs have a separate input power rail for each primary colour, so their colour is determined by the voltage sent to each rail. For example, sending equal voltages to all three rails will make the LED appear white.

An RGB LED strip is addressable, meaning that each LED in the strip may be individually controlled for parameters such as colour, chasing and strobing. This type of strip requires each LED to have its own chip.

Types

An SMD LED type indicates the LED’s dimensions. It consists of four digits, such that the first two digits indicate the LED’s length in tenths of a millimetre (mm) and the last two digits indicate the LED’s width in tenths of a mm. For example, type 3526 measures 3.5mm by 2.6mm. This common type has a single colour and is non-addressable, allowing it to use very low power.

Power

Most LED strips require 12 or 24 volts of direct power, so they need their own power supply that must be plugged into an electrical outlet. Universal Serial Bus (USB) LED strips to require five volts of direct current like all other USB devices. LED strips that use mains voltage are also available, allowing them to be much longer without losing brightness along its length. These strips don’t require a power supply, although they do need a rectifier between the mains power supply and the end of the strip.

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