What is Light Emitting Diodes (LEDs)?

13-10-29 What is Light Emitting Diodes (LEDs)? Example: Circuit symbol: Function LEDs emit light when an electric current passes through them. Connecting and soldering LEDs must be connected the correct way round, the diagram may be labelled a or + >>MORE

The working theory of Compact Fluorescent Lamp

13-10-29 History A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light, and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent lamp; some types fit into light fixtures formerly >>MORE

LED light bulb 'li-fi' closer, say Chinese scientists

13-10-29 Wi-fi connectivity from a light bulb - or li-fi - has come a step closer, according to Chinese scientists. A microchipped bulb can produce data speeds of up to 150 megabits per second (Mbps), Chi Nan, IT professor at Shanghais Fudan Univers >>MORE

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