Amplifier An amplifier increases the strength of an electrical signal. Symbol: Type:analogue process device Amplifiers are used in: 1.radios and TV’s 2.intercoms.

Slides:

Advertisements

Similar presentations

Operational Amplifiers

Advertisements

The Inverting Mode Op-Amp. What is the Inverting Mode ? The op-amp can be connected up in various ways or modes. What it does depends on how it is connected.

The Differential Mode Op-Amp. What is the Differential Mode ? The op-amp can be connected up in various ways or modes. What it does depends on how it.

MULTISTAGE AMPLIFIERS

Lecture 4: Signal Conditioning

CHAPTER 8 Operational Amplifiers (OP-AMP) Introduction to Electronics Ref: Electronic Devices and Circuit Theory Boylestad.

Module 4: Analog programming blocks. Module Objectives Analyze a control task that uses analog inputs. Connect a potentiometer to LOGO! controller and.

1 Block Diagrams Diagrams used to describe a complex system in terms of inputs, outputs, and basic functions, processes, devices, or transfer functions.

Topic 3: Op-Amp: Golden Rules of OP Amp 1.i in =0, no current flow into op amp. 2.V + =V - Typically one end of op amp is connected to ground, therefore,

Lecture 91 Loop Analysis (3.2) Circuits with Op-Amps (3.3) Prof. Phillips February 19, 2003.

EECS 42, Spring 2005Week 5b1 Topic 1: Decibels – Logarithmic Measure for Power, Voltage, Current, Gain and Loss Topic 2: Operational Amplifiers.

Op Amps Lecture 30.

Design Realization lecture 14 John Canny/Dan Reznik 10/9/03.

INTEGRATED CIRCUITS EE OVERVIEW  Introduction  What are Op-Amps?  Circuit symbol and Pin- Configuration  Inverting and Non-inverting modes..

Electric Circuits Chapter 20.3.

Lecture 10b Decibels – Logarithmic Measure for Power, Voltage, Current, Gain and Loss.

Logarithmic Representation of signal Levels “Decibel Notation dB”  Original unit was “bel”  The prefix “deci” means one tenth  Hence, the “decible”

An amplifier with a transistor that conducts during the entire 360º of the input signal cycle. Optimum class A operation is obtained by designing an amplifier.

IDEAL OPERATIONAL AMPLIFIER AND OP-AMP CIRCUITS

ECE 340 ELECTRONICS I OPERATIONAL AMPLIFIERS. OPERATIONAL AMPLIFIER THEORY OF OPERATION CHARACTERISTICS CONFIGURATIONS.

gradually rises from 0 to 9V immediately drops from 9V to 0V

Module 4: Analog programming blocks. Module Objectives Analyze a control task that uses analog inputs. Connect a potentiometer to LOGO! controller and.

S.MORRIS 2006 ELECTRICAL CIRCUIT CALCULATIONS More free powerpoints at

1 Circuit Theory Chapter 5 Operational Amplifier Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

ELECTRICAL ENGINEERING: PRINCIPLES AND APPLICATIONS, Fourth Edition, by Allan R. Hambley, ©2008 Pearson Education, Inc. Lecture 7 Amplifiers.

The signal conditioner -- changes the voltage Amplify Attenuate Filter.

Electronics - Revision 2. In electronics, it is the voltage that is important. Draw voltage time graphs for analogue and digital systems. 3. Draw a block.

Higher Physics – Unit 2 2.4Analogue Electronics. Op-Amp An op-amp has two inputs and one output. The symbol for an op-amp is: inverting input non-inverting.

Instrumentation (AMME2700) 1 Instrumentation Dr. Xiaofeng Wu.

What is an Op Amp? Ideal Op Amps Applications Examples Lecture 9. Op Amps I 1.

St Columba’s High School Electricity and Electronics Op-amps.

4.2.3B Electrical Power What About Watts?. Power Law Moving electrons (current) requires ENERGY How much energy gets used depends on: Strength of push.

Calculating Electricity

Measuring Electrical Energy.  Energy: the ability to do work.  Electrical Energy: energy transferred to an electrical load by moving electric charges.

EE 1270 Introduction to Electric Circuits Suketu Naik 0 EE 1270: Introduction to Electric Circuits Lecture 13: Operational Amplifiers Part 1 Chapter 5.

Mixed Signal Chip Design Lab Operational Amplifier Configurations Jaehyun Lim, Kyusun Choi Department of Computer Science and Engineering The Pennsylvania.

CHAPTERS 5 & 6 CHAPTERS 5 & 6 NETWORKS 1: NETWORKS 1: October 2002 – Lecture 5b ROWAN UNIVERSITY College of Engineering Professor.

Alexander-Sadiku Fundamentals of Electric Circuits

Chapter 1 Introduction to Electronics

Which of the signals below is a digital signal?

1 Amplifiers. Equivalent Circuit of a Voltage Amplifier G vo V i IoIo RoRo VoVo ViVi RiRi IiIi Amplifier ViVi VoVo (a) Black Box Representation.

Sound Fundamentals 2 Beginning Live P.A..

Electrical Calculations. Ohm’s law describes the relationship between current, resistance, and voltage. As voltage increase, current increases As resistance.

Welcome to Lecture- 5. Lecture Topics  Transistor  Classification and Symbol  Mathematical Problems  Common Base connection.

Power and Energy Calculations. Power Ratings Power is the rate that an electrical device converts electrical energy into another form (ex. light or heat)

Lecture 4: Signal Conditioning

Voltage Divider Circuits Input transducers Input transducers are devices that convert a change in physical conditions (for example, temperature) into a.

ECE201 Lect-131 Loop Analysis (7.8) Circuits with Op-Amps (3.3) Dr. Holbert October 9, 2001.

 V s /V p = N s /N p  I p V p = I s V s  I p /I s = V s /V p = N s /N p  V s = (N s /N p )V p  I s = (N p /N s )I p  P = VI; I = P/V (I.

Practice Problems 1 P1.17: An FM radio receiver has an input resistance of 75 Ohm. The input signal provided by a distant transmitter is 5 µV rms, and.

Analogue Electronics Higher Physics Unit 2 Electricity And Electronics Introduction to Op-Amps.

Electrical power. What is electrical power? Electrical power is the rate at which an electrical appliance uses electrical energy. All appliances have.

Small Signal – Low Frequency Transistor amplifier Circuits UNIT-IV.

UOP ECT 246 Week 3 iLab Op - Amps Check this A+ tutorial guideline at For more classes.

Chapter 5 Operational Amplifier

(3) Signal Conditioning

Analogue Electronic 2 EMT 212

CMA46 Questions & Answers.

Measuring Electrical Energy

Department of CNET Electronic Circuit II

Electronic Filters L.Mexhitaj 2009.

Electronic Circuit-II

CHAPTER 10 Power Supplies.

Lesson 11: Transducer Electrical Interfaces

IDEAL OPERATIONAL AMPLIFIER AND OP-AMP CIRCUITS

Basic Electrical Calculations

Modified by Mr. Wanninkhof

Department of CNET Electronic Circuit II

Electronic Circuit-II

Example Example 1: An electric lamp is rated 110 W, 200 V. When the lamp is operated at its rated power and voltage, calculate a) the current flowing through.

Presentation transcript:

Amplifier An amplifier increases the strength of an electrical signal. Symbol: Type:analogue process device Amplifiers are used in: 1.radios and TV’s 2.intercoms 3.baby alarms Amplifiers increase the amplitude of the electrical signal. FREQUENCY is NOT CHANGED.

Voltage Gain ViVi VoVo LARGER AMPLITUDE FREQUENCY stays the SAME input signal output signal

The size of the voltage gain is given by: x ÷ VoVo V gain ViVi QuantityUnit Output Voltage ( V o ) Voltage Gain ( V gain ) Input Voltage ( V i ) Volts ( V ) NO UNIT Volts ( V ) The voltage gain of an amplifier is the number that the input voltage is multiplied by to give the output voltage.

Example 1 An amplifier turns a 20 mV signal into 300 mV signal. Calculate the voltage gain of the amplifier. ** NO UNIT **

Example 2 An amplifier with a voltage gain of 80 is supplied with an input voltage of 7 mV. Calculate the output voltage.

Power Gain The power gain of an amplifier is given by: x ÷ PoPo P gain PiPi QuantityUnit Output Power ( P o ) Power Gain ( P gain ) Input Power ( P i ) Watts ( W ) NO UNIT Watts ( W )

There are also 3 formulae for electrical power we met in the topic “Using Electricity” x ÷ P I V x ÷ P I2I2 R x ÷ V2V2 P R

Example 1 An amplifier has an output power of 50 W. The input voltage is 12 V and the input resistance is 1 kΩ. Calculate:(a)the input power (b)the power gain. (CREDIT) (a)

(b) ** NO UNIT **

Yellow Book Page 56 Analogue Processes – Q63 Voltage Gain –Q67, Q70 Page 57 Power, Voltage, Resistance – Q72, Q73 Power Gain – Q76

Yellow Book Mixed Problems on Amplifiers Q80, Q84, Q86, Q88