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

Explain the small intestine, Explain the Small Intestine The small inte...

Explain the Small Intestine The small intestine is continuous with the stomach at the pyloric sphincter and leads into the large intestine at the ileocdic valve.  It is about 2

Fst-01, describe the factors which decide the broad area of scientific acti...

describe the factors which decide the broad area of scientific activity

Architecture in golden era, Architecture: The architectural style of  I...

Architecture: The architectural style of  India underwent a drastic  change after the Turkish conquest. The Sultans and their nobles insisted on having arches and domes and com

Introduction to hazards in biology laboratory, INTRODUCTION : In any scien...

INTRODUCTION : In any science lab you work with chemicals, gases, electrical equipments, glassware, instruments etc. In case you are working in a biology laboratory handling the p

What is permanent wilting percentage, What is permanent wilting percentage ...

What is permanent wilting percentage As plants absorb water from a soil, they lose most of it through evaporation at the leaf surface.  Some water is also lost by evaporation d

Explain mucous membranes - external defence mechanism, Explain Mucous membr...

Explain Mucous membranes - External Defence Mechanism Mucous membranes: The digestive, urinary, genital and respiratory tracts open out at one or both ends. They do not have a

Explain the intercostal muscles, Explain the Intercostal Muscles Look a...

Explain the Intercostal Muscles Look at Figure Can you spot the intercostal muscles? Yes, there are 11 pairs of intercostal muscles. The intercoastal muscles are the muscles

Determine how ion exchange data is helpful, Determine how ion exchange data...

Determine how ion exchange data is helpful The ion exchange data is helpful   ·  in soil management,   ·  indicating nutrient storage capacity of soil,    ·  prediction of s

Nuclear fusion, Nuclear Fusion: The Ultimate Source of Energy : An energ...

Nuclear Fusion: The Ultimate Source of Energy : An energy hungry world views with envy the glowing power of  the sun and the stars, which is based on a slightly different nuclea

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