Prepared by: Cesar Mendoza Applied Technology Teacher Prepared by: CESAR MENDOZA-Applied Technology Teacher.

Slides:

Advertisements

Similar presentations

Semiconductors Chapters

Advertisements

Solid state devices Crystal diodes – a crystal and a bronze wire Semiconductors – made from poor conductors with conductive impurities – Poor conductors.

Transistors and transistor circuits

Diodes and Transistors. Diodes Diodes are the semiconductor pn junction devices. They are formed by creating p-type and n-type semiconductors in a single.

Instructor Name: (Your Name)

Revision analog electronics

TRANSISTOR. TRANSISTOR Background and Introduction A semiconductor device that Amplifies, Oscillates, or Switches the flow of current between two terminals.

Announcements Assignment 2 due now Assignment 3 posted, due Thursday Oct 6 th First mid-term Thursday October 27 th.

Transistors These are three terminal devices, where the current or voltage at one terminal, the input terminal, controls the flow of current between the.

Electronic Devices Prepared by Kazi Md. Shahiduzzaman Transistor.

MOSFETs Monday 19 th September. MOSFETs Monday 19 th September In this presentation we will look at the following: State the main differences between.

Semiconductor circuit elements and dependent sources

Principles & Applications

Storey: Electrical & Electronic Systems © Pearson Education Limited 2004 OHT 21.1 Bipolar Transistors  Introduction  An Overview of Bipolar Transistors.

Dr. Nasim Zafar Electronics 1 EEE 231 – BS Electrical Engineering Fall Semester – 2012 COMSATS Institute of Information Technology Virtual campus Islamabad.

Transistors Electronics 1 CVSD.

Module 2 Bipolar Junction Transistor. Learning Outcomes 1.The 3 terminals or regions of a BJT. 2.Construction and symbol of NPN and PNP types 3.Low power.

NAME OF FACULTY : MR. Harekrishna Avaiya DEPARTMENT: E.C. (PPI-1ST)

Principles & Applications

Principles & Applications

By Squadron Leader Zahid Mir CS&IT Department, Superior University PHY-BE -14 Transistors.

Chapter 22 Bipolar Transistors. 2 Objectives –After completing this chapter, the student should be able to: Describe how a transistor is constructed and.

Bipolar Transistor Review

Transistors  The Transistor was invented in 1948 and  The New York Herald Tribune announced the invention of the transistor as the … “Electronic device.

G.K.BHARAD INSTITUTE OF ENGINEERING DIVISION :D (C.E.) Roll Number :67 SUBJECT :PHYSICS SUBJECT CODE : Presentation By: Kartavya Parmar.

SEMICONDUCTOR DEVICES. Diodes as a semiconductor devices Symbol and Structure Diodes is made by joining p-types and n- types semiconductor materials.

Bipolar Junction Transistors (BJTs) The bipolar junction transistor is a semiconductor device constructed with three doped regions. These regions essentially.

© 2013 The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill 5-1 Electronics Principles & Applications Eighth Edition Chapter 5 Transistors.

NPN Foundations of Technology NPN © 2013 International Technology and Engineering Educators Association, STEM  Center for Teaching and Learning™ Foundations.

Identification of transistor type and its terminals By:Engr.Irshad Rahim Memon.

TRANSISTOR.  A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power.  The transistor is the fundamental.

Bipolar Junction Transistors Topics Covered in Chapter : Transistor Construction 28-2: Proper Transistor Biasing 28-3: Operating Regions 28-4: Transistor.

BJTs. Transistor The transistor is the main building block “element” of electronics. A transistor is a semiconductor device used to amplify and switch.

Large Part Of This Lecture is Taken From Manipal Institute India

Introduction to Transistors

Transistors and Semiconductors Miracle Makers of Modern Electronics Graphics courtesy intel.com Research at ience/index.html.

McGraw-Hill 5-1 © 2013 The McGraw-Hill Companies, Inc. All rights reserved. Electronics Principles & Applications Eighth Edition Chapter 5 Transistors.

Chapter 4 Bipolar Junction Transistors

Transistor (BJT). Introduction BJT (Bipolar Junction Transistor) Vaccum tubes It comes because it is most advantageous in amplification Why it is called.

TRANSISTOR - Introduction BIPOLAR JUNCTION TRANSISTOR (BJT)

Transistor as a switch By:Engr.Irshad Rahim Memon.

 A transistor: a three-terminal semiconductor device that can perform two functions: amplification and switching.  Amplification consists of magnifying.

Lab Experiment: 3 Objectives: To understand the Transistor’s characteristics. Construct the Transistor circuit ( Common base and common emitter connection.

BJT Bipolar Junction Transistors (BJT) Presented by D.Satishkumar Asst. Professor, Electrical & Electronics Engineering

Components and their operation. SMART Funded by The National Science Foundation Diode A diode is an semiconductor component that, in general, will pass.

Introduction Semiconductors are materials whose electrical properties lie between Conductors and Insulators. Ex : Silicon and Germanium.

B IPOLAR T RANSISTOR. Transistors are three terminal active devices made from different semiconductor materials that can act as either an insulator or.

CSE251 Lecture 8: Introduction to Bipolar Junction Transistor (BJT)

NAME: NIDHI PARMAR ENR.NO.: GUIDED BY: RICHA TRIPATHI.

COURSE NAME: SEMICONDUCTORS Course Code: PHYS 473 Week No. 5.

COURSE NAME: SEMICONDUCTORS Course Code: PHYS 473 Week No. 8.

Solid-State Controls and Systems Electricity for Refrigeration, Heating and Air Conditioning 7th Edition Chapter 18 Solid-State Controls and Systems.

Regions of a Transistor A Bipolar Junction Transistor is a three terminal device containing 3 regions: Emitter, Base and Collector.

Bipolar Junction Transistors Working Principle and Applications.

Bipolar Junction Transistor (BJT) Construction

Transistors Student Lecture by: Giangiacomo Groppi Joel Cassell

CHAPTER 10 AC Power Bipolar Junction Transistors: Operation, Circuit Models, and Applications.

Difference Between NPN and PNP Transistor

Bipolar Junction Transistors (BJTs)

HASMUKH GOSWAMI COLLAGE OF

Chapter 22 Bipolar Transistors.

Transistor Characteristics

Basics of Electronics Conductors: have low resistance which allows electrical current flow easily. Insulators: have high resistance which suppresses electrical.

“Transistors”.

TRANSISTOR - Introduction

Semiconductor Devices (Electronics)

Solid State Electronics ECE-1109

BIPOLAR JUNCTION TRANSISTOR (BJT)

Transistors Magic of Electrons © 2011 Project Lead The Way, Inc.

Presentation transcript:

Prepared by: Cesar Mendoza Applied Technology Teacher Prepared by: CESAR MENDOZA-Applied Technology Teacher

Upon successful completion of this module, students should be able to: 1. State the advantages of a transistor over vacuum tubes. 2. Define a Bipolar Junction Transistor. 3. Differentiate between an NPN and a PNP transistor in terms of their construction, two-diode analogy and symbols. 4. Identify the three different BJT terminals and state the function of each terminal. 5. Recognize the low-power and high-power BJTs. 6. Measure transistor currents, and confirm that the emitter current is the sum of the collector and base currents. 7. State the common applications of a Bipolar Junction Transistor. 8. Describe the three different BJT configurations with the help of circuit diagrams. 9. Describe the application of a BJT as a switch through a practical demonstration. 10. Build and test an ‘automatic night lamp circuit’ to demonstrate the function of a BJT as a switch. 11. Build and test a simple temperature control system. Prepared by: CESAR MENDOZA-Applied Technology Teacher

The reasons are obviously its advantages over vacuum tubes such as : 1. compact size, 2. light weight, 3. more resistive to shocks and vibrations, 4. low operating voltage, 5. long life and so on. Prepared by: CESAR MENDOZA-Applied Technology Teacher

A Bipolar Junction Transistor (BJT) is defined as a three-terminal semiconductor device, whose operation depends upon the flow of electric charge carriers within the solid. The word transistor is derived from the combination of two words, “Transfer-Resistance”. It means that it is a device, which transfers a low resistance into a circuit having high resistance. Transistors in general are classified as bipolar or unipolar type. The bipolar type has two PN-Junctions, while unipolar types have only one PN-Junction. Prepared by: CESAR MENDOZA-Applied Technology Teacher

The three regions are called 1.Emitter (E), 2.Base (B), and 3.Collector (C), and the two PN-junctions are a. C-B junction and b. E-B junction. Prepared by: CESAR MENDOZA-Applied Technology Teacher

E E - Emitter C - Collector Base -B Emitter: To emit majority charge carriers into the base. Base: Base is the middle, extremely thin, and lightly doped region. It controls the electrons flowing to the collector. Collector: To collect the emitted charge carriers through the base. The functions of the three regions are as follows:

Low–power, small-signal transistors are sealed in a metal, plastic or epoxy package. Prepared by: CESAR MENDOZA-Applied Technology Teacher

High power transistors are usually designed to be mounted onto a metal frame, which acts as a heat sink (to conduct heat away). Prepared by: CESAR MENDOZA-Applied Technology Teacher

To use a BJT, we connect it so that: A. Its emitter is its negative terminal. B. The collector is several volts positive of its emitter. C. The base is 0.7V (or slightly more) positive of its emitter. Under these conditions, we find that: 1. A small base current flows into the base. 2. A much larger current flows into the collector. 3. The base and collector currents flow out of the emitter Prepared by: CESAR MENDOZA-Applied Technology Teacher I E = I C + I B where I E  Emitter current, I C  Collector current, and I B  Base current

Common applications of a transistor include the following: 1. A switch 2. An amplifier Prepared by: CESAR MENDOZA-Applied Technology Teacher

When the switch is closed, a small current flows into the base (B) of the transistor, which is just enough to make LED B glow dimly. Prepared by: CESAR MENDOZA-Applied Technology Teacher When the switch is open, no base current flows, so the transistor switches off the collector current.

Amplification is the process of increasing the level of a weak signal. A small change in the base current of a transistor produces a large variation in the collector current Prepared by: CESAR MENDOZA-Applied Technology Teacher