150 lumen per watt Led Tube lights – Not that there is anything wrong with the old sodium-discharge lamps. Producing practically all their light at a wavelength near the peak sensitivity of the human eye gave them a theoretical luminous efficacy of 200 lumens per watt of electricity consumed, though...

Lamps are often rated by: Power consumption and light output – in Watts (Unit of electricity consumption), Lumens, Lux or Candela (Units of light output), Lumens per Watt (A derived unit that indicates the luminous efficiency of the lamp). Color Rendering Index – A measure of how effi...

Color Rendering Index or CRI, light temperature, Stoke’s shift, are terms that are often used by manufacturers to promote their lighting products. There are CRI and Color Temperature wars waging in the cyberspace to defend incandescent bulbs against the onslaught of legislation and energy efficient ...

1 Forward Current If:It refers to the positive value of forward current normal light emitting diodes when . In actual use, should be selected in 0.6 ? IFm IF less .2 forward voltage VF:Parameters given in the table operating voltage is at a given forward current to get. Generally in the IF = 20mA wh...

With the continuous development of LED technology, people adapt to the development of large-area lighting and power growing single LED chip, currently the world's most cutting-edge single LED can already do more than 200W power, although power can do it , but its cost and poor. Below we have several...

LED junction temperature, what is the LED junction temperature, what causes the LED junction temperature, and what are the ways to reduce the LED junction temperature? The following will analyze in detail 1. What is the junction temperature of the High power LED? The basic structure of High power LE...

A Light Emitting Diode (LED) is a semiconductor device which converts electricity into light. LED lighting has been around since the 1960s, but is just now beginning to appear in the residential market for space lighting. At first white LEDs were only possible by “rainbow” groups of three LEDs — red...

LED is a semiconductor device itself, all of the semiconductor device has a normal operating temperature requirements, including ambient temperature and operating temperature. Ambient temperature semiconductor devices generally have less than 80 degrees of normal, while the internal LED PN junction ...

Cob integrated light source is chip on board, bare chips are glued to the Interconnect substrate with conductive or non-conductive adhesive, and are welded with the golden wires together, which realizes an electrical connection.The features of COB integrated light source as following:1.  Throug...

Figure 1: Cross-sectional view of a heat pipe embedded radial heat sink.In light-emitting diodes (LEDs), 70 percent to 80 percent of the applied electrical power is converted to waste heat. If this thermal energy is not properly dissipated, the resulting high operating temperatures lead to reduced b...

The IP Rating describes the enclosure for electronic equipment according to the definition of the European Committee for Electro Technical Standardization. IP is standing for Ingress Protection, the protection of the product against environmental effects like solid objects or liquids. The IP rating ...

Bus Ballast Ballast Factor (BF) Base or Socket Bi-Pin Base Base Temperature Bayonet Current Type (AC/DC) Alternating Current (AC) Direct Current (DC) Circuit Connector Dimmer, Dimming Control D/A Converter Analog Signal Digital Signal Efficacy Efficiency Frequency Hot Restart Time...

Whilst our appetite for consuming electricity continues to increase, so does our awareness of the need to maximise its efficiency. One area in which every commercial enterprise could not only harness energy more efficiently but ensure that the environment benefits, is through the replacement of fluo...

LED Growth Light adopts the technology of semiconductor lighting technology which is dedicated to the growth of vegetables and flowers. The wavelengths of red and blue are more suitable for the growing, blooming and bearing fruit of vegetables and flowers. The blue light is conducive to the growth o...

The relationship between LED street lamp power, lamp pole and height and road width The height of general lighting is 8 meters, the distance between street lights is generally 30 meters, and the light source can be led150w or high pressure sodium lamp 250w. First: Common LED street lamp repla...

After Edison, who monopolized the capital market, mass-produced bulbs, the application of bulbs entered an era of rapid progress. According to research data published by Fouquet and Pearson, as we develop from using handmade candles to mass-produced bulbs, the cost of artificial light Over the centu...

There are currently two basic types of solid-state lighting devices: LED, OLED. Current LEDs are very small in size (about one square millimeter) and are extremely bright. Having been developed about 25 years before OLEDs, LEDs are already employed in a variety of lighting products, such as traffic ...

What influences the lifespan of an LED Light? The longer a light source is used, the greater the economic advantage and the green footprint. Depending on the system design, minimal decrease in luminous flux over time is a normal process, the components are getting down. When this process is reall...

The Death of the Light Bulb The incandescent bulb came to life in 1880 in the workshop of Thomas Edison but it was only in 1910 that the tungsten filament lamp as we know today came into being. Since then for nearly a century the incandescent bulb has continued to be the most popular lighting de...