Light emitting diode (led)

• It is diode which gives out light radiations when forward biased.
• Led’s are made of GaAsp, Gap.
• Light-emitting diode play an indispensable role today in many electrical and electronic devices.
• The LED is a specialised form of PN junction that uses a compound junction.
• They can also be used in form of lamp as the source of light, because LED lamps offer long service life and high energy efficiency as compared to fluorescent and incandescent lamps.

Features of LED

• Ecologically friendly :LED lighting is much more eco-friendly
• Durable quality : LED illumination can withstand rough conditions.
• Zero UV emissions : LED lighting features close to no UV emissions.
• Low power requirement : It requires less power for ex in TV sets as compared to LCD TVs
• Long life : When properly installed, an LED can function for decades with very low maintenance cost.
• High efficiency : Light-Emitting Diode produces less heat as compared to normal LCD TVs and fluorescent lamps thus increasing the efficiency.
• Image Quality : They offer better image quality as compared to LCD TVs.