WORKING OF BJT AMPLIFIER

                   

                     Have  your tried to know ,How BJT transistor acts as an amplifier?If you dont know ,Then Don't worry we will explain it to you.

                The first thing everyone needs to know is  ,The voltage applied at the base of the transistor is very small when compared to the collector voltage and  dDC voltage at base should be  of the order of around 0.7 volts                

                                 .                                                  

                           Second thing you need to know is,the base voltage controls the collector terminal voltage.

                          Next ,the third thing you need to know is ,the small A.C signal is applied at the baseterminal voltage only and the amplified AC signal is taken out at Collector terminal.

From the figure,we can see the notations of the teriminals of a bjt transitor.

                     

     When the voltage of the AC signal applied at the base terminal is increased or Let us take the voltage at the peak then the whole current will flow  from collector to emitter terminal and reach the ground,and the ouput current taken at collector terminal becomes zero.Hence voltage  will appear zero or minimum at collector terminal.let us say it is connected to ground virtually at that time.

                           When the voltage across base terminal decreases  i.e let us take at zero crossing point of the waveform,then the  current from collector to emitter  will decrease  which will increase the voltage at collector  eventually.

                                   " since voltage drop  is directly proportional to current"So voltage drop will be small i.e high voltage from Vcc will appear at collector terminal.Hence the output collector voltage will be high.

                             when the base voltage values are taken at permmisible intervals we can observe the exact replica of the input signal but of the higher values ,since the input Dc voltage at the collector is high i.e of the order of 10 volts.

conclusion :"In other words ,We can say that  the alternating small input signal is controlling the collector terminal voltage and also shaping the  collector terminal High DC voltage to large sinusoidal signal waveform, JUST LIKE POTTERY MAN SHAPING THE POT." 

Here ,we can also say that the phase difference between input signal and output signal is 180 DEGREES ,(which is used in the generation of oscillations to produce completely 360 or 0 degrees phase shift.) 

DigiTaL ArT

Magntic levitation

How to levitate an object just like antigravity

                Most of us try levitation of an object by using magnets.yet most of won't succeed .But we bring to you how to levitate a spinning disc by application of an magnetic field by using magnets which every one can try at home .

Intel corporation is hiring technical interns at bangalore

Graduate Intern Technical 

 Description for job: It could be sure that responsibilities may be quite diverse of an exempt technical nature. U.S. experience and education requirements will vary significantly depending on the unique needs of the job. Job assignments are usually for the summer or for short periods during breaks from school.

Qualification required: The TMG-DTS System Design and Validation Technology (SDVT) team requires a graduate technical intern with the following requirements: Should be pursuing MTech (Computer Science or related field) and have excellent results throughout his/her academic career.      Hands-on experience in C or C++, proficient in OOPS concepts.      Ability to learn new technical concepts or domains quickly and with very less handholding. Should have an innovative bent of mind. Ability to work well within a team and be very proactive.

Job Category: Software Engineering

Primary Location: India-India, BangaloreFull/Part Time: Full Time

Job Type: Student/Intern

Regular/Temporary: Temporary

Business Group:

                 As the world's largest electronic chip manufacturer, Intel  strives to make every facet of semiconductor manufacturing state-of-the-art -- from semiconductor process development and manufacturing, through yield improvement to final test and optimization, and lastly packaging. Employees in the Technology and Manufacturing group are part of a worldwide network of manufacturing and assembly/test facilities.

How to applyCandidates must apply online

click here to apply

About Intel Corporation

Intel is  the world leader in silicon innovation, develops technologies, products and initiatives to continually advance peoples  work and live through a completely updating way.

Internship at GE(GENERAL ELECTRIC)

GE(GENERAL ELECTRIC) Hiring interns in hyderabad 

Eligibility :

•  candidates from 2016 batch with an aggregate of 75% and above throughout academics  BE/BTech - (CS/IT/IS/ECE)   

Job Description :  

• Think out of box, study the requirement, and do research on best practices.
• Ready for designing and working with n-tier architectures(UI, Business). 

• Maintain strong skills in Logic Layer, Data Access Layer along with some experience with service-oriented architectures (SOA).

• Should be ambitious to become an entrepreneur.    

Skills Required:

• Constructively work together as a team, sharing ideas and resources.

• A high degree of analytical and problem solving abilities.

• Excellent communication skills both written and verbal.

• Passionate about building high-quality systems with software implementation best practices while working as a self-motivated and responsible team player.

• Willing to learn .NET 3.5/4.0 Framework, including Visual Studio 2010/12, ASP.NET, and ADO.NET.

• Willing to learn test .NET Framework, ie; Visual Studio 2013/15, ASP.NET, ADO.NET

• Responsible to design and optimize SQL Server 2008/12 Stored Procedures, Views, Triggers, and functions.

• Candidate should be a self-motivated, independent, detail oriented, responsible team-player and exhibit exceptional relationship management skills.

Location  : Bangalore

Salary : INR 4.5 - 7 LPALast Date : 20th Oct 2015

click here to apply