IP RATE
0 No special protection 0 No special protection 1 Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part 1 Protection from vertically dripping water for a duration of not more than 10 minutes. Water equivalent to 1 mm rainfall per minute. 2 Protection against fingers or similar objects 2 Vertically ...
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Q1.What’s LED? LED is short form of ” Light emiting diode”, is a semiconductor device that emits visible light when electrical current passes through it, it is a special kind of diode. Q2. How LED innovate ?In 1955, Mr Rubin Braunstein from Radio Corporation of America invent GaAsand other semiconductor infrared ray.In 1962, Mr Nick Holonyak Jr from General Electric...
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