Semiconductor devices and their uses, Science

Assignment Help:

Semiconductor Devices and their Uses:

If a junction  is formed between a p-type and an n-type'semiconductor,  the device called a p- n  junction diode acquires a peculiar pppeny. It conducts current only in one direction! Hence, it  is usedto convert alternating current (a.c.),into  direct current (44 The device acts as an open circuit in Fig. It acts as ag  open circiit Fig. And since it is a non-mechanical  switch, it acts very fast. 

 

1936_Semiconductor Devices and their Uses.png

More complicated devices using n-p-n  or p-n-p combinations of semiconductor mat6rial are called transistors.  They have even more interesting properties. They can be so  connected to batteries that a small variation of current on one side, can lead to a large variation on the other side. In technical jargon, the transistor can 'amplify' small signals. Transistors can also be connected  to other electrical components (resistors, capacitors etc.) to produce a.c. of high frequency.   

Semiconductor devices are extremely small in size. Their properties can be controlled at will. This may be done by changing the amount of doping or by  introducing more sections of p-type or n-type semiconductors on the same crystal. A large number of new semiconductor devices have been made in this way. Further, by  suitable methods, they can be produced  in a large chain or according to a desired pattern'on  a non-conducting surface called a chip. When a large number of semiconductor devices are produced on a single chipto perform specific functions, the resulting device is called an integrated circuit (IC). Because of their small size and their sturdiness, and because they consume almost no energy, these devices hive become very popular as components in TV sets, computers and many kinds of  instruments used for communication and control.  

 


Related Discussions:- Semiconductor devices and their uses

food plant engineeringsystems, water at 20 degree cellsuis is flowing a ra...

water at 20 degree cellsuis is flowing a rate of 20 L/minute through a 5 cm is internal diameter pipe. the viscosity of water at this temperatures is 0.98c cP. calculate the reynol

#titlecell, which is longset cell in human body

which is longset cell in human body

Semiconductors, Semiconductors: By now you have studied more than half ...

Semiconductors: By now you have studied more than half of  this course. You may have been to the study centre a few times. You might have taken lessons on audio  cassette-recor

Experiment to show where air may be found, TO SHOW WHERE AIR MAY BE FOUND ...

TO SHOW WHERE AIR MAY BE FOUND 1) Plunge a narrow-necked bottle, mouth down into ajar of water. Slowly tip the mouth of the bottle in the direction of  the surface of the water

Recycling of used resources and waste, Recycling of used resources and wast...

Recycling of used resources and waste: Some of the materials once used need not go waste, these can be  re-used. The process through which the waste resources are again made us

Media and educational environment, Media and Educational Environment: S...

Media and Educational Environment: Some  recent technological developments  in media, have opened up new horizons. Besides, increasing use of media, to support and expand educa

Interstellar and intergalactic space, Interstellar and Intergalactic Space:...

Interstellar and Intergalactic Space: The space between the stars and the galaxies looks empty, doesn't it? But this 1s not true. In the great dark between stars in the galaxie

Hop eld neural networks, Create a binary 0-1 Hop field neural network with ...

Create a binary 0-1 Hop field neural network with 3 neurons and 3 stable states. Specify the weights and biases you have used, and draw the state transition diagram corresponding t

Anatomy Physiology, upright, turn around 180 degrees to face opposite direc...

upright, turn around 180 degrees to face opposite direction Take several steps forward. Reach forward and grasp a door knob Turn a door knob 180 degrees clockwise Sit down in a cha

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd