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

#title.organism., explain reoroductive system of housefly

explain reoroductive system of housefly

What is results of recipient operation, What is Results of Recipient Operat...

What is Results of Recipient Operation ? International Society for Heart and Lung Transplantation (ISHLT) maintains data from more than 300 centres starting from 1980. Data fo

Define the gene activation - mechanism of hormone action, Define the Gene A...

Define the Gene Activation - Mechanism of Hormone Action A second important way by which the hormone affects cell function is gene activation. This is the mechanism of hormonal

Zoology, how to prevent skin problems?

how to prevent skin problems?

I DONT KNOW, #question.I AM TRAYING TO DO A SCIENCE PROJECT FOR 7TH GRADE B...

#question.I AM TRAYING TO DO A SCIENCE PROJECT FOR 7TH GRADE BUT I DONT KNOW WHAT SHOULD I DO ?

Effects of global warming, Effects of Global warming ñ Alterations in ...

Effects of Global warming ñ Alterations in the Global Precipitation: A more warm atmosphere will contribute to enhanced evaporation from surface waters and leads to the more

Explain the emergency contraceptive pill (ecp) method, Explain the Emergenc...

Explain the Emergency Contraceptive Pill (ECP) method The ECP method or "morning after pill" uses a high dose of combined oral contraceptives (OCs) to prevent conception. The O

The arctic circle lies at which latitudes, The Arctic Circle lies at which ...

The Arctic Circle lies at which latitudes: At (66 ½oSouth)

Matter, what is meaning of solid'' liguid'' gases?why eresers float in wate...

what is meaning of solid'' liguid'' gases?why eresers float in water?why deos paper sink in water?

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