PHYS225 Lecture 18. Electronic Circuits
|
|
- Pauline Rice
- 6 years ago
- Views:
Transcription
1 PHYS225 Lecture 18 Electronic Circuits
2 Oscillators and Timers Oscillators & Timers Produce timing signals to initiate measurement Periodic or single pulse Periodic output at known (controlled) frequency Shape is also known (controllable) Sinusoid, square, triangle, etc. Part of nearly every electronic device
3 Relaxation oscillators Use a simple RC decay to generate a sustained oscillation Example using an op amp as a comparator Flips between states at a given frequency (1/RC)
4 Sine Wave Generator Wien Bridge oscillator 1/3 gain amplifier with phase shift cancellation Other techniques RC phase shift quadrature
5 Resonators Use piezoelectric effect Voltage generates a strain Quartz crystal vibrates at a specific frequency Depends on thickness of crystal Can cat like a very sharply tuned RLC circuit element Q is Very stable and useful!
6 The 555 Timer The 555 Timer is one of the most popular and versatile integrated circuits ever produced! It is 30 years old and still being used! It is a combination of digital and analog circuits. It is known as the time machine as it performs a wide variety of timing tasks. Applications for the 555 Timer include: Bounce-free switches and Cascaded timers Frequency dividers Voltage-controlled oscillators Pulse generators and LED flashers
7 555 Timer DIS R VCC Q THR TR CV NE555 1 GN D Each pin has a function Note some familiar components inside
8 Inside the 555 Timer
9 Inside the 555 Timer The voltage divider (blue) has three equal 5K resistors. It divides the input voltage (Vcc) into three equal parts. The two comparators (red) are op-amps that compare the voltages at their inputs and saturate depending upon which is greater. The Threshold Comparator saturates when the voltage at the Threshold pin (pin 6) is greater than (2/3)Vcc. The Trigger Comparator saturates when the voltage at the Trigger pin (pin 2) is less than (1/3)Vcc
10 The flip-flop (green) is a bi-stable device. It generates two values, a high value equal to Vcc and a low value equal to 0V. When the Threshold comparator saturates, the flip flop is Reset (R) and it outputs a low signal at pin 3. When the Trigger comparator saturates, the flip flop is Set (S) and it outputs a high signal at pin 3. The transistor (purple) is being used as a switch, it connects pin 7 (discharge) to ground when it is closed. When Q is low, Qbar is high. This closes the transistor switch and attaches pin 7 to ground. When Q is high, Qbar is low. This open the switch and pin 7 is no longer grounded 10
11 Types of 555-Timer Circuits 5V 5V Ra 4 8 R 4 8 C Rb uF DIS THR TR CV NE555 R 1 GN D VCC Q 3 LED 1 2 1K C uF DIS THR TR CV NE555 R 1 GN D VCC Q 3 LED Astable Multivibrator puts out a continuous sequence of pulses Monostable Multivibrator (or one-shot) puts out one pulse each time the switch is connected
12 Monostable Multivibrator (One Shot) V cc 8 4 Reset R Threshold Comparator R a 6 2 V cc 3 R - + +V -V R Q Output 3 Trigger 2 1 Vcc 3 +V - + -V Trigger Comparator S Q Control Flip-Flop C 7 R 1 Monstable Multivibrator One-Shot
13 Behavior of the Monostable Multivibrator The monostable multivibrator is constructed by adding an external capacitor and resistor to a 555 timer. The circuit generates a single pulse of desired duration when it receives a trigger signal, hence it is also called a one-shot. The time constant of the resistor-capacitor combination determines the length of the pulse.
14 Uses of the Monostable Multivibrator Used to generate a clean pulse of the correct height and duration for a digital system Used to turn circuits or external components on or off for a specific length of time. Used to generate delays. Can be cascaded to create a variety of sequential timing pulses. These pulses can allow you to time and sequence a number of related operations.
15 Astable Pulse-Train Generator (Multivibrator) V cc 8 4 R Threshold Comparator R 1 R 2 6 R - + +V -V R Q Output V -V S Q Trigger Comparator Control Flip-Flop C 7 R 1 Astable Pulse-Train Generator
16 Behavior of the Astable Multivibrator The astable multivibrator is simply an oscillator. The astable multivibrator generates a continuous stream of rectangular offon pulses that switch between two voltage levels. The frequency of the pulses and their duty cycle are dependent upon the RC network values. The capacitor C charges through the series resistors R 1 and R 2 with a time constant (R 1 + R 2 )C. The capacitor discharges through R 2 with a time constant of R 2 C
17 Uses of the Astable Multivibrator Flashing LED s Pulse Width Modulation Pulse Position Modulation Periodic Timers
18 Flashing LED s 40 LED bicycle light with 20 LEDs flashing alternately at 4.7Hz
19 Understanding the Astable Mode Circuit 555-Timers, like op-amps can be configured in different ways to create different circuits. This one creates a train of equal pulses, as shown at the output.
20 10V TCLOSE = U1 V V R1 1k V 8V 1 10V V1 2 U2 TOPEN = 0 C1 1uF 6V 4V Capacitor Voltage 2V 0 Capacitor C1 is charged up by current flowing through R1 I V1 V R1 0V 0s 1ms 2ms 3ms 4ms 5ms 6ms 7ms 8ms 9ms 10ms V(U2:1) V(R1:2) V(V1:+) CAPACITOR 10 V 1k CAPACITOR As the capacitor charges up, its voltage increases and the current charging it decreases Time
21 10mA 10V 8mA 8V 6mA Capacitor and Resistor Current 6V Capacitor Voltage 4mA 4V 2mA 2V 0A 0s 1ms 2ms 3ms 4ms 5ms 6ms 7ms 8ms 9ms 10ms I(R1) I(C1) Capacitor Current Capacitor Voltage Time Where the time constant I 0V 0s 1ms 2ms 3ms 4ms 5ms 6ms 7ms 8ms 9ms 10ms V(U2:1) V(R1:2) V(V1:+) I e o t V V o e t 1 Time RC R1 C1 1ms
22 10V 8V 6V Capacitor Voltage 4V 2V 0V 0s 1ms 2ms 3ms 4ms 5ms 6ms 7ms 8ms 9ms 10ms V(U2:1) V(R1:2) V(V1:+) Time Note that the voltage rises to a little above 6V in 1ms. 1 ( 1 e ). 632
23 At the beginning of the cycle, C1 is charged through resistors R1 and R2. The charging time constant is charg e ( R1 The voltage reaches (2/3)Vcc in a time R2) C1 555 Timer t charg e T ( R1 R2) C1
24 555 Timer When the voltage on the capacitor reaches (2/3)Vcc, a switch (the transistor) is closed (grounded) at pin 7. The capacitor is discharged to (1/3)Vcc through R2 to ground, at which time the switch is opened and the cycle starts over. t discharg e disch arg e T2 ( R2) C ( R2) C1
25 555 Timer The frequency is then given by f ( R1 2 R2) C1 ( R1 2 R2) C1
26 PWM: Pulse Width Modulation Signal is compared to a sawtooth wave producing a pulse width proportional to amplitude
27 What Can Be Done With PWM? Low Duty Cycle Medium Duty Cycle High Duty Cycle Question: What happens if voltages like the ones above are connected to a light bulb? Answer: The longer the duty cycle, the longer the light bulb is on and the brighter the light. 20 March 2007 Electronic Instrumentation 27
28 What Can Be Done With PWM? Average power can be controlled Average flows can also be controlled by fully opening and closing a valve with some duty cycle 20 March 2007 Electronic Instrumentation 28
Electronic Instrumentation
5V 1 1 1 2 9 10 7 CL CLK LD TE PE CO 15 + 6 5 4 3 P4 P3 P2 P1 Q4 Q3 Q2 Q1 11 12 13 14 2-14161 Electronic Instrumentation Experiment 7 Digital Logic Devices and the 555 Timer Part A: Basic Logic Gates Part
More informationPRESENTATION ON 555 TIMER A Practical Approach
PRESENTATION ON 555 TIMER A Practical Approach By Nagaraj Vannal Assistant Professor School of Electronics Engineering, K.L.E Technological University, Hubballi-31 nagaraj_vannal@bvb.edu 555 Timer The
More information555 Timer and Its Application
ANALOG ELECTRONICS (AE) 555 Timer and Its Application 1 Prepared by: BE-EE Amish J. Tankariya SEMESTER-III SUBJECT- ANALOG ELECTRONICS (AE) GTU Subject Code :- 210902 2 OBJECTIVES 555 timer; What is the
More informationMultivibrators. Department of Electrical & Electronics Engineering, Amrita School of Engineering
Multivibrators Multivibrators Multivibrator is an electronic circuit that generates square, rectangular, pulse waveforms. Also called as nonlinear oscillators or function generators. Multivibrator is basically
More informationIntroduction to IC-555. Compiled By: Chanakya Bhatt EE, IT-NU
Introduction to IC-555 Compiled By: Chanakya Bhatt EE, IT-NU Introduction SE/NE 555 is a Timer IC introduced by Signetics Corporation in 1970 s. It is basically a monolithic timing circuit that produces
More informationEE 3101 ELECTRONICS I LABORATORY EXPERIMENT 9 LAB MANUAL APPLICATIONS OF IC BUILDING BLOCKS
EE 3101 ELECTRONICS I LABORATORY EXPERIMENT 9 LAB MANUAL APPLICATIONS OF IC BUILDING BLOCKS OBJECTIVES In this experiment you will Explore the use of a popular IC chip and its applications. Become more
More informationDEPARTMENT OF ELECTRICAL ENGINEERING LAB WORK EE301 ELECTRONIC CIRCUITS
DEPARTMENT OF ELECTRICAL ENGINEERING LAB WORK EE301 ELECTRONIC CIRCUITS EXPERIMENT : 4 TITLE : 555 TIMERS OUTCOME : Upon completion of this unit, the student should be able to: 1. gain experience with
More informationPolice Siren Circuit using NE555 Timer
Police Siren Circuit using NE555 Timer Multivibrator: Multivibrator discover their own space in lots of applications as they are among the most broadly used circuits. The application can be anyone either
More informationASTABLE MULTIVIBRATOR
555 TIMER ASTABLE MULTIIBRATOR MONOSTABLE MULTIIBRATOR 555 TIMER PHYSICS (LAB MANUAL) PHYSICS (LAB MANUAL) 555 TIMER Introduction The 555 timer is an integrated circuit (chip) implementing a variety of
More informationTo design/build monostable multivibrators using 555 IC and verify their operation using measurements by observing waveforms.
AIM: SUBJECT: ANALOG ELECTRONICS (2130902) EXPERIMENT NO. 09 DATE : TITLE: TO DESIGN/BUILD MONOSTABLE MULTIVIBRATORS USING 555 IC AND VERIFY THEIR OPERATION USING MEASUREMENTS BY OBSERVING WAVEFORMS. DOC.
More informationChapter 16: Oscillators
Chapter 16: Oscillators 16.1: The Oscillator Oscillators are widely used in most communications systems as well as in digital systems, including computers, to generate required frequencies and timing signals.
More informationAnalog Electronic Circuits Lab-manual
2014 Analog Electronic Circuits Lab-manual Prof. Dr Tahir Izhar University of Engineering & Technology LAHORE 1/09/2014 Contents Experiment-1:...4 Learning to use the multimeter for checking and indentifying
More informationCHAPTER 4: 555 TIMER. Dr. Wan Mahani Hafizah binti Wan Mahmud
CHAPTE 4: 555 TIME Dr. Wan Mahani Hafizah binti Wan Mahmud 555 TIME Introduction Pin configuration Basic architecture and operation Astable Operation Monostable Operation Timer in Triggering Circuits 555
More informationELG3331: Digital Tachometer Introduction to Mechatronics by DG Alciatore and M B Histand
ELG333: Digital Tachometer Introduction to Mechatronics by DG Alciatore and M B Histand Our objective is to design a system to measure and the rotational speed of a shaft. A simple method to measure rotational
More informationZSCT1555 PRECISION SINGLE CELL TIMER ISSUE 2 - MAY 1998 DEVICE DESCRIPTION FEATURES APPLICATIONS SCHEMATIC DIAGRAM
PRECISION SINGLE CELL TIMER ZSCT555 ISSUE 2 - MAY 998 DEVICE DESCRIPTION These devices are precision timing circuits for generation of accurate time delays or oscillation. Advanced circuit design means
More informationGovernment Polytechnic Muzaffarpur Name of the Lab: Applied Electronics Lab
Government Polytechnic Muzaffarpur Name of the Lab: Applied Electronics Lab Subject Code: 1620408 Experiment-1 Aim: To obtain the characteristics of field effect transistor (FET). Theory: The Field Effect
More information). The THRESHOLD works in exactly the opposite way; whenever the THRESHOLD input is above 2/3V CC
ENGR 210 Lab 8 RC Oscillators and Measurements Purpose: In the previous lab you measured the exponential response of RC circuits. Typically, the exponential time response of a circuit becomes important
More informationHIGH LOW Astable multivibrators HIGH LOW 1:1
1. Multivibrators A multivibrator circuit oscillates between a HIGH state and a LOW state producing a continuous output. Astable multivibrators generally have an even 50% duty cycle, that is that 50% of
More informationOscillators are electronic circuits that produce a constant oscillating signal that can be a sinusoid, a square wave or a triangular wave.
Oscillators Oscillators are electronic circuits that produce a constant oscillating signal that can be a sinusoid, a square wave or a triangular wave. Oscillators are classified as linear or harmonic oscillators
More informationSignal Generators and Waveform-Shaping Circuits
CHAPTER 18 Signal Generators and Waveform-Shaping Circuits Figure 18.1 The basic structure of a sinusoidal oscillator. A positive-feedback loop is formed by an amplifier and a frequency-selective network.
More information55:041 Electronic Circuits
55:041 Electronic Circuits Oscillators Sections of Chapter 15 + Additional Material A. Kruger Oscillators 1 Stability Recall definition of loop gain: T(jω) = βa A f ( j) A( j) 1 T( j) If T(jω) = -1, then
More informationEG572EX: ELECTRONIC CIRCUITS I 555 TIMERS
EG572EX: ELECTRONIC CIRCUITS I 555 TIMERS Prepared By: Ajay Kumar Kadel, Kathmandu Engineering College 1) PIN DESCRIPTIONS Fig.1 555 timer Pin Configurations Pin 1 (Ground):- All voltages are measured
More informationExpect to be successful, expect to be liked,
Thought of the Day Expect to be successful, expect to be liked, expect to be popular everywhere you go. Oscillators 1 Oscillators D.C. Kulshreshtha Oscillators 2 Need of an Oscillator An oscillator circuit
More informationPower Line Carrier Communication
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 2, Ver. II (Mar - Apr. 2014), PP 50-55 Power Line Carrier Communication Dorathe.
More informationLecture 14: 555 Timers
Faculty of Engineering MEP382: Design of Applied Measurement Systems Lecture 14: 555 Timers 555 TIMER IC HISTORY The 555 timer IC was first introduced around 1971 by the Signetics Corporation as the SE555/NE555
More informationClass #6: Experiment The 555-Timer & Pulse Width Modulation
Class #6: Experiment The 555-Timer & Pulse Width Modulation Purpose: In this experiment we look at the 555-timer, a device that uses digital devices and other electronic switching elements to generate
More informationPhysics 116B TLC555 Timer Circuit
Physics 116B TLC555 Timer Circuit Physics116B, 1/17/07 D. Pellett 1 TLC555 Timer Circuit Variation on widely-used 555 timer using MOSFETs rather than BJTs Can be used to make (among other things): Schmitt
More informationDev Bhoomi Institute Of Technology Department of Electronics and Communication Engineering PRACTICAL INSTRUCTION SHEET REV. NO. : REV.
Dev Bhoomi Institute Of Technology Department of Electronics and Communication Engineering PRACTICAL INSTRUCTION SHEET LABORATORY MANUAL EXPERIMENT NO. ISSUE NO. : ISSUE DATE: July 200 REV. NO. : REV.
More informationProject (02) Dc 2 AC Inverter
Project (02) Dc 2 AC Inverter By: Dr. Ahmed ElShafee 1 12v DC to 220v AC Converter Circuit Using Astable Multivibrator Inverter circuits can either use thyristors as switching devices or transistors. Normally
More informationTouchless Control: Hand Motion Triggered Light Timer
Touchless Control: Hand Motion Triggered Light Timer 6.101 Final Project Report Justin Graves Spring 2018 1 Introduction Often times when you enter a new room you are troubled with finding the light switch
More informationOperating Manual Ver.1.1
Multivibrators (Astable and Monostable) Operating Manual Ver.1.1 An ISO 9001 : 2000 company 94-101, Electronic Complex Pardesipura, Indore- 452010, India Tel : 91-731- 2570301/02, 4211100 Fax: 91-731-
More informationOBJECTIVE The purpose of this exercise is to design and build a pulse generator.
ELEC 4 Experiment 8 Pulse Generators OBJECTIVE The purpose of this exercise is to design and build a pulse generator. EQUIPMENT AND PARTS REQUIRED Protoboard LM555 Timer, AR resistors, rated 5%, /4 W,
More informationMODULE TITLE : OPERATIONAL AMPLIFIERS TOPIC TITLE : OSCILLATORS LESSON 2 : RELAXATION OSCILLATORS
MODULE ILE : OPEAIONAL AMPLIFIES OPIC ILE : OSCILLAOS LESSON : ELAXAION OSCILLAOS OA - - eesside University INODUCION he '555' timer is a very popular and 'user friendly' I.C. used to produce 'single shot'
More informationAND ITS APPLICATIONS M.C.SHARMA
AND ITS APPLICATIONS M.C.SHARMA 555 TIMER AND ITS APPLICATIONS BY M. C. SHARMA, M. Sc. PUBLISHERS: BUSINESS PROMOTION PUBLICATIONS 376, Lajpat Rai Market, Delhi-110006 By the same author Transistor Novelties
More informationTransistor Digital Circuits
Recapitulation Transistor Digital Circuits The transistor Operating principle and regions Utilization of the transistor Transfer characteristics, symbols Controlled switch model BJT digital circuits MOSFET
More informationExperiment EB2: IC Multivibrator Circuits
EEE1026 Electronics II: Experiment Instruction Learning Outcomes Experiment EB2: IC Multivibrator Circuits LO1: Explain the principles and operation of amplifiers and switching circuits LO2: Analyze high
More informationProject 3 Build a 555-Timer
Project 3 Build a 555-Timer For this project, each group will simulate and build an astable multivibrator. However, instead of using the 555 timer chip, you will have to use the devices you learned about
More informationThe steeper the phase shift as a function of frequency φ(ω) the more stable the frequency of oscillation
It should be noted that the frequency of oscillation ω o is determined by the phase characteristics of the feedback loop. the loop oscillates at the frequency for which the phase is zero The steeper the
More informationLab 2 Revisited Exercise
Lab 2 Revisited Exercise +15V 100k 1K 2N2222 Wire up led display Note the ground leads LED orientation 6.091 IAP 2008 Lecture 3 1 Comparator, Oscillator +5 +15 1k 2 V- 7 6 Vin 3 V+ 4 V o Notice that power
More informationENGR-4300 Fall 2006 Project 3 Project 3 Build a 555-Timer
ENGR-43 Fall 26 Project 3 Project 3 Build a 555-Timer For this project, each team, (do this as team of 4,) will simulate and build an astable multivibrator. However, instead of using the 555 timer chip,
More informationMC3456 DUAL TIMING CIRCUIT
Order this document by /D The dual timing circuit is a highly stable controller capable of producing accurate time delays, or oscillation. Additional terminals are provided for triggering or resetting
More informationB.E. SEMESTER III (ELECTRICAL) SUBJECT CODE: X30902 Subject Name: Analog & Digital Electronics
B.E. SEMESTER III (ELECTRICAL) SUBJECT CODE: X30902 Subject Name: Analog & Digital Electronics Sr. No. Date TITLE To From Marks Sign 1 To verify the application of op-amp as an Inverting Amplifier 2 To
More informationExam Booklet. Pulse Circuits
Exam Booklet Pulse Circuits Pulse Circuits STUDY ASSIGNMENT This booklet contains two examinations for the six lessons entitled Pulse Circuits. The material is intended to provide the last training sought
More informationFeatures. Applications
LM555 Timer General Description The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the
More informationPWM BASED DC MOTOR SPEED CONTROLLER USING 555 TIMER
PWM BASED DC MOTOR SPEED CONTROLLER USING 555 TIMER This is a simple and useful circuit for controlling the speed of DC motor. This can be used in different applications like robotics, automobiles etc.
More informationConcepts to be Reviewed
Introductory Medical Device Prototyping Analog Circuits Part 3 Operational Amplifiers, http://saliterman.umn.edu/ Department of Biomedical Engineering, University of Minnesota Concepts to be Reviewed Operational
More informationDistributed by: www.jameco.com -800-8- The content and copyrights of the attached material are the property of its owner. NE SA - SE GENERAL PURPOSE SINGLE BIPOLAR TIMERS LOW TURN OFF TIME MAXIMUM OPERATING
More information21/10/58. M2-3 Signal Generators. Bill Hewlett and Dave Packard s 1 st product (1939) US patent No HP 200A s schematic
M2-3 Signal Generators Bill Hewlett and Dave Packard s 1 st product (1939) US patent No.2267782 1 HP 200A s schematic 2 1 The basic structure of a sinusoidal oscillator. A positive feedback loop is formed
More informationLIC & COMMUNICATION LAB MANUAL
LIC & Communication Lab Manual LIC & COMMUNICATION LAB MANUAL FOR V SEMESTER B.E (E& ( E&C) (For private circulation only) NAME: DEPARTMENT OF ELECTRONICS & COMMUNICATION SRI SIDDHARTHA INSTITUTE OF TECHNOLOGY
More information1. LINEAR WAVE SHAPING
Aim: 1. LINEAR WAVE SHAPING i) To design a low pass RC circuit for the given cutoff frequency and obtain its frequency response. ii) To observe the response of the designed low pass RC circuit for the
More informationElectronic Concepts and Troubleshooting 101. Experiment 1
Electronic Concepts and Troubleshooting 101 Experiment 1 o Concept: What is the capacity of a typical alkaline 1.5V D-Cell? o TS: Assume that a battery is connected to a 20Ω load and the voltage across
More informationScheme I Sample Question Paper
Sample Question Paper Marks : 70 Time: 3 Hrs. Q.1) Attempt any FIVE of the following. 10 Marks a) Classify configuration of differential amplifier. b) Draw equivalent circuit of an OPAMP c) Suggest and
More informationElectronic PRINCIPLES
MALVINO & BATES Electronic PRINCIPLES SEVENTH EDITION Chapter 22 Nonlinear Op-Amp Circuits Topics Covered in Chapter 22 Comparators with zero reference Comparators with non-zero references Comparators
More informationComparators, positive feedback, and relaxation oscillators
Experiment 4 Introductory Electronics Laboratory Comparators, positive feedback, and relaxation oscillators THE SCHMITT TRIGGER AND POSITIVE FEEDBACK 4-2 The op-amp as a comparator... 4-2 Using positive
More informationChapter Timer IC. NE555 from Signetics in dual-in-line package WORLD TECHNOLOGIES
Chapter 1 555 Timer IC NE555 from Signetics in dual-in-line package Internal block diagram The 555 Timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation and oscillator applications.
More informationFacility of Engineering. Biomedical Engineering Department. Medical Electronic Lab BME (317) Post-lab Forms
Facility of Engineering Biomedical Engineering Department Medical Electronic Lab BME (317) Post-lab Forms Prepared by Eng.Hala Amari Spring 2014 Facility of Engineering Biomedical Engineering Department
More informationMinnesota State College Southeast ELEC 2260: Linear Integrated Circuits
Minnesota State College Southeast ELEC 2260: Linear Integrated Circuits A. COURSE DESCRIPTION Credits: 4 Lecture Hours/Week: 2 Lab Hours/Week: 4 OJT Hours/Week: *.* Prerequisites: None Corequisites: None
More informationRoHS Compliant Product
RoHS Compliant Product Description The SMSNE555 is a highly stable timer IC that can be operated in astable mode and monostable mode. For monostable mode: time delay is controlled by one external and one
More informationLM555/NE555/SA555 Single Timer
Single Timer www.fairchildsemi.com Features High Current Drive Capability (00mA) Adjustable Duty Cycle Temperature Stability of 0.005%/ C Timing From µsec to Hours Turn off Time Less Than µsec Applications
More informationFor input: Peak to peak amplitude of the input = volts. Time period for 1 full cycle = sec
Inverting amplifier: [Closed Loop Configuration] Design: A CL = V o /V in = - R f / R in ; Assume R in = ; Gain = ; Circuit Diagram: RF +10V F.G ~ + Rin 2 3 7 IC741 + 4 6 v0-10v CRO Model Graph Inverting
More informationCHAPTER 3: OSCILLATORS AND WAVEFORM-SHAPING CIRCUITS
CHAPTER 3: OSCILLATORS AND WAVEFORM-SHAPING CIRCUITS In the design of electronic systems, the need frequently arises for signals having prescribed standard waveforms (e.g., sinusoidal, square, triangle,
More informationUNIT-V: WAVEFORM GENERATORS AND SPECIAL FUNCTION ICs. PARTA (2 Marks)
UNIT-V: WAVEFORM GENERATORS AND SPECIAL FUNCTION ICs PARTA (2 Marks) 1. Define line regulation.[auc April 2004] It is defined as the percentage change in the output voltage from a change in the input voltage.
More informationUNISONIC TECHNOLOGIES CO., LTD
SINGLE TIMER UNISONIC TECHNOLOGIES CO., LTD DESCRIPTION The UTC NE555 is a highly stable timer integrated circuit. It can be operated in both Astable and Monostable mode. With monostable operation, the
More informationV out A v. Feedback Circuit
Oscillators V out A v Feedback Circuit Figure.: Positive Feed Back The feedback network in an oscillator an input to the amplifier, which in turn an input to the feedback network. Since positive feedback
More informationMassachusetts Institute of Technology MIT
Massachusetts Institute of Technology MIT Real Time Wireless Electrocardiogram (ECG) Monitoring System Introductory Analog Electronics Laboratory Guilherme K. Kolotelo, Rogers G. Reichert Cambridge, MA
More informationEC202- ELECTRONIC CIRCUITS II Unit- I -FEEEDBACK AMPLIFIER
EC202- ELECTRONIC CIRCUITS II Unit- I -FEEEDBACK AMPLIFIER 1. What is feedback? What are the types of feedback? 2. Define positive feedback. What are its merits and demerits? 3. Define negative feedback.
More informationAnalog Circuits Part 3 Operational Amplifiers
Introductory Medical Device Prototyping Analog Circuits Part 3 Operational Amplifiers, http://saliterman.umn.edu/ Department of Biomedical Engineering, University of Minnesota Concepts to be Reviewed Operational
More informationApplied Electronics II
Applied Electronics II Chapter 4: Wave shaping and Waveform Generators School of Electrical and Computer Engineering Addis Ababa Institute of Technology Addis Ababa University Daniel D./Getachew T./Abel
More informationLM555. Single Timer. Description. Features. Applications. Internal Block Diagram. Vcc GND. Trigger. Discharge. Output F/F. Threshold.
Single Timer www.fairchildsemi.com Features High Current Drive Capability (00mA) Adjustable Duty Cycle Temperature Stability of 0.005%/ C Timing From μsec to Hours Turn off Time Less Than μsec Applications
More informationEE-110 Introduction to Engineering & Laboratory Experience Saeid Rahimi, Ph.D. Lab Timer: Blinking LED Lights and Pulse Generator
EE-110 Introduction to Engineering & Laboratory Experience Saeid Rahimi, Ph.D. Lab 9 555 Timer: Blinking LED Lights and Pulse Generator In many digital and analog circuits it is necessary to create a clock
More informationSpeed Control of DC Motor Using Phase-Locked Loop
Speed Control of DC Motor Using Phase-Locked Loop Authors Shaunak Vyas Darshit Shah Affiliations B.Tech. Electrical, Nirma University, Ahmedabad E-mail shaunak_vyas1@yahoo.co.in darshit_shah1@yahoo.co.in
More informationExperiment 5.A. Basic Wireless Control. ECEN 2270 Electronics Design Laboratory 1
.A Basic Wireless Control ECEN 2270 Electronics Design Laboratory 1 Procedures 5.A.0 5.A.1 5.A.2 5.A.3 5.A.4 5.A.5 5.A.6 Turn in your pre lab before doing anything else. Receiver design band pass filter
More informationHigh Current MOSFET Toggle Switch with Debounced Push Button
Set/Reset Flip Flop This is an example of a set/reset flip flop using discrete components. When power is applied, only one of the transistors will conduct causing the other to remain off. The conducting
More informationL M 5 5 5/N E 5 5 5/S A 5 5 5
L M 5 5 5/N E 5 5 5/S A 5 5 5 S i n g l e T i m e r www.fairchildsemi.com Features High Current Drive Capability (00mA) Adjustable Duty Cycle Temperature Stability of 0.005%/ C Timing From µsec to Hours
More informationt w = Continue to the next page, where you will draw a diagram of your design.
Name EET 1131 Lab #13 Multivibrators OBJECTIVES: 1. To design and test a monostable multivibrator (one-shot) using a 555 IC. 2. To analyze and test an astable multivibrator (oscillator) using a 555 IC.
More informationLINEAR IC APPLICATIONS
1 B.Tech III Year I Semester (R09) Regular & Supplementary Examinations December/January 2013/14 1 (a) Why is R e in an emitter-coupled differential amplifier replaced by a constant current source? (b)
More informationDifference between BJTs and FETs. Junction Field Effect Transistors (JFET)
Difference between BJTs and FETs Transistors can be categorized according to their structure, and two of the more commonly known transistor structures, are the BJT and FET. The comparison between BJTs
More informationDistributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. LM555 Timer General Description The LM555 is a highly stable device for
More informationElectronics II. Previous Lecture
Fall 204 (Rev. 3.0) Lecture 25 555 Timer IC (Mono Stable Operation) Voltage Controlled Oscillator and Phase Locked Loop Muhammad Tilal Department of Electrical Engineering CIIT Attock Campus Duplication
More informationINTEGRATED CIRCUITS AND APPLICATIONS LAB MANUAL
INTEGRATED CIRCUITS AND APPLICATIONS LAB MANUAL V SEMESTER Department of Electronics and communication Engineering Government Engineering College, Dahod-389151 http://www.gecdahod.ac.in/ L A B M A N U
More informationMODEL ANSWER SUMMER 17 EXAMINATION Subject Title: Linear Integrated Circuit Subject Code:
MODEL ANSWER SUMMER 17 EXAMINATION Subject Title: Linear Integrated Circuit Subject Code: Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as
More informationFACTFILE: GCSE Technology and Design
FACTFILE: GCSE Technology and Design OPTION A: ELECTRONIC AND MICROELECTRONIC CONTROL SYSTEMS 2.14 Timers Monostable Learning Outcomes You should be able to: demonstrate knowledge and understanding of
More informationmultiplier input Env. Det. LPF Y (Vertical) VCO X (Horizontal)
Spectrum Analyzer Objective: The aim of this project is to realize a spectrum analyzer using analog circuits and a CRT oscilloscope. This interface circuit will enable to use oscilloscopes as spectrum
More information11. What is fall time (tf) in transistor? The time required for the collector current to fall from 90% to 10% of its DEPARTMENT OF ECE EC 6401 Electronic Circuits II UNIT-IV WAVE SHAPING AND MULTIVIBRATOR
More informationLINEAR INTEGRATED CIRCUITS APPLICATIONS LABORATORY OBSERVATION
LENDI INSTITUTE OF ENGINEERING AND TECHNOLOGY (Approved by A.I.C.T.E & Affiliated to JNTU, Kakinada) Jonnada (Village), Denkada (Mandal), Vizianagaram Dist 535005 Phone No. 08922-241111, 241112 E-Mail:
More informationTable of Contents Lesson One Lesson Two Lesson Three Lesson Four Lesson Five PREVIEW COPY
Oscillators Table of Contents Lesson One Lesson Two Lesson Three Introduction to Oscillators...3 Flip-Flops...19 Logic Clocks...37 Lesson Four Filters and Waveforms...53 Lesson Five Troubleshooting Oscillators...69
More informationOSCILLATORS AND WAVEFORM-SHAPING CIRCUITS
OSILLATORS AND WAVEFORM-SHAPING IRUITS Signals having prescribed standard waveforms (e.g., sinusoidal, square, triangle, pulse, etc). To generate sinusoidal waveforms: o Positive feedback loop with non-linear
More informationEE283 Electrical Measurement Laboratory Laboratory Exercise #7: Digital Counter
EE283 Electrical Measurement Laboratory Laboratory Exercise #7: al Counter Objectives: 1. To familiarize students with sequential digital circuits. 2. To show how digital devices can be used for measurement
More informationFor the op amp circuit above, how is the output voltage related to the input voltage? = 20 k R 2
Golden Rules for Ideal Op Amps with negative feedback: 1. The output will adjust in any way possible to make the inverting input and the noninverting input terminals equal in voltage. 2. The inputs draw
More informationApplications. NS Part Number SMD Part Number NS Package Number Package Description LM555H/883 H08A 8LD Metal Can LM555J/883 J08A 8LD Ceramic Dip
LM555QML Timer General Description The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the
More informationElectronic Metronome. Using a 555 Timer
Electronic Metronome Using a 555 Timer LM 555 Timer Chip Used in a wide variety of circuits to generate square wave and triangular shaped single and periodic pulses. High efficiency LED and fluorescence
More informationLM555 and LM556 Timer Circuits
LM555 and LM556 Timer Circuits LM555 TIMER INTERNAL CIRCUIT BLOCK DIAGRAM "RESET" And "CONTROL" Input Terminal Notes Most of the circuits at this web site that use the LM555 and LM556 timer chips do not
More informationElectronic Circuits EE359A
Electronic Circuits EE359A Bruce McNair B206 bmcnair@stevens.edu 201-216-5549 Lecture 18 436 Bistable circuit If v + > 0, v 0 = V max à v + > 0 If v + < 0, v 0 = -V max à v+ < 0 437 Bistable circuit physical
More informationPreface... Chapter 1. Nonlinear Two-terminal Devices... 1
Preface........................................... xi Chapter 1. Nonlinear Two-terminal Devices.................... 1 1.1. Introduction..................................... 1 1.2. Example of a nonlinear
More information..LOW TURN OFF TIME NE555 SA555 - SE555 GENERAL PURPOSE SINGLE BIPOLAR TIMERS. MAXIMUM OPERATING FREQUENCY GREATER THAN 500kHz
NE SA - SE GENERAL PURPOSE SINGLE BIPOLAR TIMERS..LOW TURN OFF TIME MAXIMUM OPERATING FREQUENCY GREATER THAN 00kHz. TIMING FROM MICROSECONDS TO HOURS. OPERATES IN BOTH ASTABLE AND MONOSTABLE MODES HIGH
More informationFeedback and Oscillator Circuits
Chapter 14 Chapter 14 Feedback and Oscillator Circuits Feedback Concepts The effects of negative feedback on an amplifier: Disadvantage Lower gain Advantages Higher input impedance More stable gain Improved
More informationFigure 1.1 Mechatronic system components (p. 3)
Figure 1.1 Mechatronic system components (p. 3) Example 1.2 Measurement System Digital Thermometer (p. 5) Figure 2.2 Electric circuit terminology (p. 13) Table 2.2 Resistor color band codes (p. 18) Figure
More informationFig 1: The symbol for a comparator
INTRODUCTION A comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as They are commonly used in devices
More information. HIGH MAXIMUM ASTABLE FREQUENCY 2.7MHz PIN-TO-PIN AND FUNCTIONALLY COMPATIBLE WITH BIPOLAR NE555
TS555C,I,M LOW POWER SINGLE CMOS TIMERS. ERY LOW POWER CONSUMPTION : 100µA typ at CC = 5. HIGH MAXIMUM ASTABLE FREQUENCY 2.7MHz PIN-TO-PIN AND FUNCTIONALLY COMPATIBLE WITH BIPOLAR NE555. OLTAGE RANGE :
More informationChapter 13: Comparators
Chapter 13: Comparators So far, we have used op amps in their normal, linear mode, where they follow the op amp Golden Rules (no input current to either input, no voltage difference between the inputs).
More information