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 glomerular filtration rate (gfr), Explain the Glomerular Filtra...

Explain the Glomerular Filtration Rate (GFR) The kidneys receive a large amount of blood flow. The kidney blood flow is approximately 1200 ml per minute. One-tenth of this is f

What is the time complexity of a convolution, 1. What is the time complexit...

1. What is the time complexity of a convolution with an n by n sized kernel when using a direct convolution with a 2d mask, and when using a separable kernel. Each of the answers i

Define protein hormone and steroid hormone, Define Protein Hormone and Ster...

Define Protein Hormone and Steroid Hormone Further, hormones are of two different chemical types - protein hormone and steroid hormone. Most of the hormones belong to the categ

What are the advantages of acid soils, What are the Advantages of Acid Soil...

What are the Advantages of Acid Soils The acid soils, formed by any of the above processes, behave as very strong acids so much so that pH is quite low even in partial convers

Determine the agronomic factors of fertilizers, Determine the Agronomic fac...

Determine the Agronomic factors of fertilizers These factors are key to efficient use of fertilizers for crop production and include fertilizer responsiveness of crops, spacing

.volcanism, what the different types of volcanoes are?

what the different types of volcanoes are?

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

Define and classify euthanasia, Question 1 Explain the Human Organ Transpl...

Question 1 Explain the Human Organ Transplantation Act and its legal implications Question 2 Discuss the regulatory requirements in setting up and running a blood bank

What is the rate of species, What is the rate of species and how does this ...

What is the rate of species and how does this relate to finding transitional species? The rate of species stated on the time and specific species and environment at the time, t

Plants.., what is the photosynthesis?

what is the photosynthesis?

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