Bjt is a bipolar device and in this, the conduction takes place through the electrons and holes. Basic electronics types of transistors tutorialspoint. Arial calibri comic sans ms wingdings symbol times new roman lecture 663 microsoft equation 3. Ahmed advantages of bjts bjts have high switching frequencies since their turnon and turnoff time is low. Presentations ppt, key, pdf logging in or signing up. Bipolar junction transistor bjt is a three terminal, three layer, two junction semiconductor device. If i were designing this amplifier id want ve to be as low as possible but not zero volts. Chapter 3 bipolar junction transistor bjt presentation transcript. Open, and edit, or save microsoft powerpoint files with the chrome extension or app.
The symbol consists of a circle with a two diagonal lines forming the shape of a triangle with vertical line at the tip of the triangle. Sumit thakur ece seminars transistor ppt powerpoint presentation pdf. It is a semiconductor device and it comes in two general types. Download for windows polleverywhere in powerpoint on laptop. Bipolar junction transistorbipolar junction transistor bjtbjt chapter 3 2. A normal transistor which we had discussed in the previous chapters come under this category. The npn transistor is made by placing a ptype material between two ntype materials. Powerpoint viewer, a free download from, enables viewing of powerpoint presentations on computers that do not have powerpoint installed. Redraw the network in more convenient and logical form asutosh kar, iiit bhubaneswar. Soon after its invention it replaced vacuum tubes that were ubiquitous electronics device in all.
Ppt bjt switching circuits powerpoint presentation. Diode drop makes this 1 v now we can inject the signal we want to amplify 1 ma 3. Bipolar junction transistor 2 general construction a bipolar junction transistor consists of two pn junctions in close proximity to each other two arrangements are possible according to whether the middle region is n or ptype material npn or pnp leads are attached to the three regions, known as emitter, base, and. Emitter is heavily doped, collector is moderately doped and base is lightly doped and base is very thin. The abbreviation of metal oxide semiconductor field effect transistor is mosfet. Fet is a unipolar device and in this, the conduction takes place through the electrons or holes. The construction of a power bjt is slightly different than that of a normal logic transistor. The input signal of small amplitude is applied at the base to get the magnified output. Basic semiconductor physics, diodes, the nonlinear diode model, load line analysis, large signal diode models, offset diode model, transistors, large signal bjt model, load line analysis, small signal model and transistor amplification.
Bipolar junction transistor bjt npntransistor pnptransistor bjt is a 3 terminal device. Create a new presentation and edit it with others at the same time from. The middle section base is narrow and one of the other two regions emitter is heavily doped. Emittere, baseb and collectorc are the three terminals of the device. The input signal of small amplitude is applied at the base to get the magnified output signal at the collector. The pnp transistor is made by placing an ntype material between two ptype materials.
Bipolar junction transistorbipolar junction transistor bjtbjt. Output characteristics plot ic as fvce, ib cutoff region off both be and bc reverse. Bipolar junction transistor is a three terminal device commonly termed as bjt was invented in bell laboratories in 1948 by william shockley, brattain, john bardeen which revolutionized not only the world of electronics but also our day to day life. Introductionintroduction the basic of electronic system nowadays is semiconductor device. Bjt switching circuits the bjt as a switch the bjt can be used as a switch by driving it back and forth between saturation closed and cutoff open. The operating point of a device, also known as bias point or quiescent point or simply qpoint, is the dc voltage andor current which, when applied to a device, causes it to operate in a certain desired fashion. The transistor is a terminal device and the three terminals are base, emitter, and collector. Presentation on bipolar junction transistor ppt video. Let ib and ic be base current and collector current respectively see fig. This tool is ideal for anyone creating an impressive presentation. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Logic gate can turn loads on bjt in saturation or off bjt in cutoff i. Today we have come up with a powerpoint presentation of transistor as an amplifier.
The bjt has two pn junctions, the baseemitter junction and the basecollector junction. Ans ii a h hr a a ar i fe oe l i v il 11 11 1 90 50 0 800 90 09 82 6 6 ans h. Ebers moll large signal bjt model, using cvd model to solve for dc bias point. Microsoft powerpoint download 2020 latest for windows 10.
Transistors the building blocks of electronics world 2. Illustrated in the transistor powerpoint template is the electronic circuit symbol for a transistor. Bjt modeling and r e transistor model small signal analysis instructor. Generally, an ebook can be downloaded in five minutes or less. As a reminder, though, in a relational database, tables store your data. Your data doesnt liveanywhere else, and that makes tables the central component of your database. Bipolar junction transistors bjt and its applications. Bipolar junction transistors bjt general configuration and definitions the transistor is the main building block element of electronics. In applications where small signal voltages must be amplified. Get here download transistor as an amplifier powerpoint presentation. There are multiple strategies for analyzing these circuits. Bjt common emitter characteristics slide 4 aim of this chapter recall pn junction so if we combine these by fusing their terminals. View a presentation without powerpoint powerpoint office support. Looks like a pn junction voltampere characteristic.
Summary the bipolar junction transistor bjt is constructed of three regions. If you continue browsing the site, you agree to the use of cookies on this website. Download transistor as an amplifier powerpoint presentation. Microsoft powerpoint empowers you to create clean slide presentations and intricate pitch decks and gives you a powerful presentation maker to tell your story. The hetero bipolar junction transistor is also a type is the bipolar junction transistor. It uses different semiconductor materials to the emitter and base region and produces heterojunction. Bipolar junction transistor operationtypesapplications. This threeterminal device is often referred to as bipolar junction transistor. Bjt circuit configurations, bjt design, base resistance and emitter current crowding in bjts, punchthrough breakdown in bjts, gummelpoon bjt equivalent circuit accounting for the leakage currents. Linearizing the be current for ac input voltages is a must for low distortion amplification unless there is feedback from collector to base and there isnt. Introduction a bipolar junction transistor bjt is a three terminal semiconductor device in which the operation depends on the interaction of both majority and. The three of them received the nobel prize in 1956 for their invention.
It has an extra lightly doped n region called as collector drift region in addition to base contact,emitter contact and collector contact with n,p and n region. Powerpoint 2016 is microsofts latest version with new features and streamlined automation. The term bipolar reflects the fact that holes and electrons involve in the current flow. Presentation on bipolar junction transistor slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Diodes and transistors pdf 28p this note covers the following topics.
Bjt ac analysis the r e model for cb as shown in the figure, it is the commonbase bjt circuit. Microsoft powerpoint, slide presentation software, ppt. Biasing a typical bjt amplifier before we can use a bjt as an amplifier we need to set it up for use called biasing the transistor 20v 10k. The bipolar transistor is composed of two pn junctions and hence is also. Bjt amplifier circuits pdf 23p this note covers the following topics. Power bjt is a three terminal device with very large current and power handling capacity and offer high voltage resistance in off state. Electrical engineering department power transistors characteristics electrical engineering division page 10 of 14 eg 405. Annual report annual report ppt template free download annual report sample ppt, 100% free to download. The purpose of biasing is to establish a qpoint about which variations in current and voltage can occur in response to an ac input signal. Equivalent to an on state when transistor is used as a switch. Bjt small signal analysis asutosh kar, iiit bhubaneswar. Bipolar junction transistors bjt npn pnp bjt crosssections commonemitter npn transistor input characteristics plot ib as fvbe, vce as vce increases, more vbe required to turn the be on so that ib0. The three layers are called the emitter, base and collector.
As we know transistor has two basic applicationstransistor as an amplifier. Chapter 3 bipolar junction transistor bjt ppt video online. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. A free powerpoint ppt presentation displayed as a flash slide show on id. The hbt can handle the singles of very high frequencies of several hundred ghz generally it is used in ultrafast circuits and mostly used in radiofrequency. Here we will describe the system characteristics of the bjt.
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