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

State about the active soil formers, Active Factors or Active Soil Formers ...

Active Factors or Active Soil Formers        It has been recognized for many years that climate  is one of the major state factors controlling soil formation. Soil climate regi

Define the nature of sound, Define the Nature of Sound This section is ...

Define the Nature of Sound This section is a recapitulation of what you have learnt in school. You would recall that sound waves consist of the longitudinal waves of alternate

Explain history and physical examination report in detail, Question 1 E...

Question 1 Explain History and physical examination report in detail 2 Reference materials and books are indispensable resources for the Medical transcription. Explain 3

Dissolution and dilution, Dissolution and dilution : Water soluble1 miscib...

Dissolution and dilution : Water soluble1 miscible chemical wastes which are harmless in high dilution may be run into the drainage with plenty of water. It may be noted that al

Laser, wave length of invisible co2 laser

wave length of invisible co2 laser

What is the rock cycle explain briefly, What is the rock cycle explain brei...

What is the rock cycle explain breifly? The rock cycle is the full "life" of a rock from its original formation to its demise through weathering, and rebirth through recrystall

Define nucleic acids, Nucleic acids are polymers  of  nucleotides. Nucleot...

Nucleic acids are polymers  of  nucleotides. Nucleotides  are nucleoside phosphates.

Recall of intricate details, The three clinical nurse consultants working i...

The three clinical nurse consultants working in gastrointestinal surgery received 14 face-to-face hours of research training, including instruction in qualitative interview techniq

Laboratory safety codes, Laboratory Safety Codes: BIS has prepared the fol...

Laboratory Safety Codes: BIS has prepared the following three codes (in the form of small books) regarding laboratory safety: i) Code of safety in microbiological laboratories

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