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Light-emitting diode:
One of the most common light sources used in electronics is the "Light Emitting Diode" (LED). A LED is a two terminal semiconductor device comprising a p-n junction, which conducts in one direction only. This semiconductor material emits light when the p-n junction is forward biased and a current is flowing through it. LEDs can be manufactured to emit visible or invisible (infra-red) light.
Visible LEDs are often used as indicators in electronic equipment either singly, for indicating 'power on' for instance, or in arrays for alpha/numeric displays.
LEDs are reliable and have a very long life if treated carefully. Light emission in different colours of the spectrum can, when required, be obtained by varying the proportions of the elements comprising the chip, and also by a technique of "doping" with other elements, i.e. nitrogen. Current consumption (typically about 5 - 20 mA) generally limits the usefulness of a LED to equipment that is not battery powered.
Q. State difference between elastic and plastic deformation. Ans. Elastic deformation: Elastic deformation is that the part of the deformed material, when the applied load is
method of solving resection
Fire safety management for restaurants: Staff in restaurants must be aware that customers who have been served their food are always reluctant to leave that food and evacuate.
Design, Construction and Type Certificate The following chapter covers the initial design, construction, registration and test flying of the first prototype of a new aircraft.
Let C(K) denote a European vanilla Call option with strike price K. Assume that all options are identical except for strike price, and strike prices satisfy (K1) What are the no-
list out the errors in lenier measurment
Let C (K) denote a European vanilla Call option with strike price K. Assume that all options are identical except for strike price, and strike prices satisfy K1 What are the no-ar
Question 1 Write a long note on Professional Cultures in a ‘Golden Age' Question 2 Write a long note on the Global and Local Interrelationship Question 3 Write a long no
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WHAT IS THE DIAGRAM OF TWO LEVEL CLIPPER WITHOUT REFERENCE AND EXPLAIN
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