Understanding basic electricity can be invaluable in both safety, as well as when troubleshooting and repairing an electrical circuit. Chances are, you wont be an expert in repairing these devices, but you can take some practical steps to solve problems and help get your systems operational again in a timely. Introduction to electronics ii dedication human beings are a delightful and complex amalgam of the spiritual, the emotional, the intellectual, and the physical. Most likely you caused it by your most recent action. R the total resistance in the circuit is then rtot 1010. Troubleshooting electrical wiring is best performed by electricians who understand the fundamentals of electricity and have experience installing home electrical circuit wiring. The methods, techniques, and devices presented in this compilation are used in testing various electrical and electronic apparatus. Troubleshooting electrical controls how to troubleshoot. Basic troubleshooting techniques freedom high school systems management. Operators are complaining that a large compressor on several occasions has failed to start. The following information will provide basic information about electrical troubleshooting, however each electrical circuit must be carefully considered with respect to. A virtual troubleshooting exercise such as this one is a good way to start students thinking in the right ways to becoming effective troubleshooters. Eie practical troubleshooting of electronic circuits for. The problem for the troubleshooter is to determine what a.
Short circuit a connection that may be closed is called. Electrical troubleshooting in seven steps efficient plant. Radio works as a receiver, to receive radio signal, process and produced audio. Specific troubleshooting techniques all about circuits. General troubleshooting techniques performing testing. You do need to be able to read a schematic diagram and understand basic circuit functions. On older printed circuit boards, the techniques used for troubleshooting were performed in a variety of ways, including the following. If it does, youve just swapped the faulty component.
The following batteryswitchlamp circuit has a problem. Using kirchhoffs laws, you can simplify a network of resistors using a single equivalent resistor. Magnetic fields net currents main 1 of 5 main 2 of 5 main 3 of 5 meter main 4 of 5 main 5 of 5 2. Electronics troubleshooting finding whats wrong youtube. Emi troubleshooting techniques ee circuit solutions. More often than not, a circuit is not going to work perfectly on the first try, especially as a beginner. Pdf lesson 1 troubleshooting with electrical schematics. Localizing the trouble to the circuit isolating the circuits within the faulty unit.
Electronics troubleshooting techniques engineering projects. Troubleshooting and using circuit laws gaining circuit familiarity troubleshooting basics common troubleshooting techniques the program the practical troubleshooting of electronic circuits workshop will teach you how to recognise and efficiently troubleshoot common electronic component and circuit problems. An electrician is troubleshooting a faulty light circuit, where the power source and light bulb are far removed from one another. This manual will give you a solid understanding in common electronic terminology and. Electronic repair is a skill and once you had mastered it, no one can snatch your knowledge away. It not only explains the operating function of the components but also is a valuable diagnostic tool. Print reading and electrical circuit troubleshooting techniques. Please click on the ebook photo or this link to access the website for more information. Regardless if you are fixing and troubleshooting plasma tv, vcd, lcd tv, monitor, dvd, cctv, printer, satellite receiver, xbox, audio equipment, atx power supplies, power adapter, data projector, you absolutely must have this unique effective book to demonstrate you the way to be an expert on switch mode power supplies repair and smps troubleshooting in just 7 days guaranteed. Failure of this pump will result in the loss of a generator currently producing half of the stations power output. Greetings once again, troubleshooters, and welcome to troubleshooting thursdays.
Massachusetts institute of technology artificial intelligence. The following four troubleshooting techniques are popular and widely used to find defects in communication equipment. We have been learning about some interesting facts and circuits related to digital electronics such as ghost detection circuit, basic tubelight circuit, dc to dc charger and so forth. All trademarks, registered trademarks, product names and company names or logos mentioned herein are the property of their respective owners. Jan 01, 2015 electronics troubleshooting finding whats wrong. Practical troubleshooting of electronic circuits for engineers and. The test leads are connected in parallel across the circuit load. Your professionals will learn to diagnose and repair a variety of faults in a simulated electrical circuit consisting of wiring, lights, relays, switches and pushbuttons. It is important to remember that debugging is a skill as useful to a circuit designer as ones understanding of mathematics, physics, and circuit theory or ones ability to come up with creative new topologies. Download it once and read it on your kindle device, pc, phones or tablets. After applying some of the general troubleshooting tips to narrow the scope of a problems location, there are techniques useful in further isolating it. How to do electrical troubleshooting of electrical motor. The unexpected behavior exhibited by the circuit is due to improper locating or soldering of components, component damage due to aging, faults, overheat, and so on.
The items described range from semiconductor package leak detectors to automatic circuit analyzers and antenna simulators for system checkout. Nearly anyone who is familiar with basic electronic theory can learn troubleshooting techniques and fix many types of electronic failures. One document is a schematic drawing of the pneumatic circuit fig. See more ideas about electrical troubleshooting, car fix and truck repair. This site is not directly affiliated with business industrial network. Explain all the components of a related symptoms check. Although it seems complicated, this circuit can be analyzed using the techniques we cover in this book. Printed circuit board deconstruction techniques joe grand grand idea studio, inc. Resources and methods for learning about these subjects list a few here, in preparation for your. I take you through the basic process of troubleshooting electronic devices that do not work. Circuit was working, but now it does not what was the last thing you did to the circuit. If you saw last weeks post, youll know we were talking about using 3d tech training environment in immersive learning just to recap, anything that allows training to be more experiential and lifelike makes it more immersive.
This makes it unnecessary to open the circuit before you connect the meter. Expected voltage readings when testing a transistor circuit with a multimeter. Describe how to begin properly troubleshooting electronic circuits. General troubleshooting techniques tip 5 apr 18, 2018 developing skills, electrical troubleshooting, troubleshooting thursdays a resource for safe and effective troubleshooting from the leaders in simulation training. Our goal in this text is to learn various analytical techniques and computer software applications for describing the behavior of a. You can also do the same type of calculation to obtain.
If there is a problem in electric circuit then possible causes may be. It gives you handson, optimal solutions whether your task is design, lab testing, or onsite troubleshooting, no matter what type of electronic equipment youre handling. Pdf voltage contrast techniques for integrated circuit. Great ideas of electronic repair, troubleshooting tips and secrets for beginners, hobbyist, technicians and engineers. We will add more posts soon on many topics such as how to build a solar generator, and this post will help build the basics on which those posts will expand. For example, function of signal generator is to produce sinusoidal signal or squarewave. It can also be accomplished by measuring the voltage across a resistor of known value. Troubleshooting simulation, you are ready for and will be at home with the troubleshooting plc circuits program and using the plc simulator.
Use features like bookmarks, note taking and highlighting while reading emi troubleshooting techniques ee circuit solutions. Many circuits are similar to it, and it provides good starting point to explain some of the points to note. The circuit shows several of the points where the voltage can be. Local methods for localizing faults in electronic circuits. We conclude with a summary of our work in section 7. Emi troubleshooting techniques ee circuit solutions kindle edition by mardiguian, michel. Recognise and efficiently troubleshoot common electronic component and circuit problems. Electrical troubleshooting 3 measuring voltage drop observe the circuit above. Troubleshooting plan electronics troubleshooting techniques. In a system with identical or parallel subsystems, swap components between those subsystems and see whether or not the problem moves with the swapped component. A boiler feed pump being powered by two 3500 hp induction motors appears to be developing a problem.
This twoday class is intended serve as a refresher in substation print reading and be additional training for individuals who are responsible for substation operations and maintenance. Analogue signature analysis to test the unpowered printed circuit boards pcbs. Troubleshooting electrical circuits tec is our foundational electrical troubleshooting simulation. Using the circuit tracing technique, show how to analyze the symptoms and define the problem you need to diagnose.
Look for improper voltages, improper waveforms, obvious component overheating. Fortunately, electrical circuit troubleshooting is an activity that works well for small groups of students to engage in as well as individual students. Pdf electronic devices and circuit theory by robert. Gather up any background material you may have on hand and then use your senses to inspect the site. A troubleshooting investigation into a particular circuit proceeds in two phases. Experienced technicians have developed a method for troubleshooting. In first question, we should know the devices and their function working style. Troubleshooting electrical circuits simutech multimedia.
Basic circuit analysis 23 example the bridge circuit again we know that the seriesparallel reduction method is not useful for this circuit. General troubleshooting guide for electric circuit. The circuit below is a typical basic transistor circuit. Nearly anyone who is familiar with basic electronic theory can learn troubleshooting techniques and fix many. Every pneumatic system should have two forms of documentation that will assist in troubleshooting. This is a powerful troubleshooting method, because. Diagnosing of defective printed circuit boards pcb. Motor and motor control troubleshooting techniques. How to solve power off immediately after turn on in vizio 42 lcd tv for members onlyit is free to join click here to sign up free to become a member. Emi troubleshooting techniques presents an orderly, methodical approach to locating the cause of and correctingemirfi breakdowns.
This book is a compete sensor signal conditioning manual including bridge circuits, strain, force, pressure, flow measurements. They follow certain logical steps when looking for a defect in a piece of equipment. One of the most common troubleshooting techniques taught to technicians is the socalled divide and conquer method, whereby the system or signal path is divided into halves with each measurement, until the location of the fault is pinpointed. Troubleshooting electrical controls how to troubleshoot a. Ohms law is a key device equation that relates current, voltage, and resistance. More extensive troubleshooting is now required within the identified faulty unit. It is almost impossible to do something perfect the first time. Circuit troubleshooting based on applying lean six sigma. The first basic troubleshooting step is to look at the symptom carefully and determine what circuits could be causing the failure. Print reading and electrical circuit troubleshooting.
When students are first learning circuit analysis and fabrication, they often lack the skills totroubleshoot failed circuits based on a. To troubleshoot, you simply follow logical, stepbystep procedures to arrive at a solution. With a 12 volt power source connected to the load, the meter should read a voltage drop equal to the source voltage or 12 volts. Resources and methods for learning about these subjects list a few here.
Explain the function of an electronic power supply. The workshop will give you a solid understanding in common electronic terminology and symbols, as well as the. Dmm digital multimeter if you do not have one get one and learn how to use it. An electrician is troubleshooting a faulty light circuit, where the power source and. Troubleshooting is the process of tracing and rectifying faults in electricelectronics circuit. What would you recommend as the next voltmeter measurement to take in troubleshooting the circuit, following the same divide in half.
Electronic equipment repair topic 3 diagnosis techniques. No matter how urgent the problem and motor failure can cause some very urgent problems always develop a plan of attack before you start repair work. Practical design techniques for sensor signal conditioning. Basic circuit troubleshooting worksheet basic electricity. Troubleshooting of an electronic circuit is a process of having a special outlook on components that comes out with remedies to repair it. Cooney, indiana university purdue university, indianapolis elaine cooney is the chair of the department of engineering technology and the program director for electrical engineering technology at indiana university purdue university indianapolis.
Take voltage measurements from the faulty circuit to compare. Darlington pair circuit 9 fieldeffect transistors 9 fet handling problems 143 negative feedback 144 heatsinks 148 switching circuits 150 other switching devices 154 diode and transistor coding 160 chapter 6 linear ics 163 overview 163 the 741 opamp 165 gain and bandwidth 165 offset 166 bias methods 167 basic circuits 168 general notes on. The question is how to apply the transformation so that the circuit can become solvable using the seriesparallel reduction or other ac. To troubleshoot, a sequence of measurements must be made to localize this point of variance, or fault. Electrical motor control circuits is a product developed by business industrial network.
New lcd tv repair tips volume 2 ebook by kent liew. Question 8 this circuit is called a voltage divider, because it. The first involves discovering more values such as currents and voltages occurring at various points in the circuit, and the second involves finding coincidences. Good troubleshooting skills are vital to the electronics hobbyist. Common troubleshooting techniques the program the practical troubleshooting of electronic circuits workshop will teach you how to recognise and efficiently troubleshoot common electronic component and circuit problems. The art of debugging circuits massachusetts institute of. Introduction t he fourth edition of this book has been updated to include the latest electrical and electronic devices and troubleshooting methods. After applying some of the general troubleshooting tips to narrow the scope of a problems. This paper presents lean six sigma techniques and methods that electrical engineering technology eet students have found useful in their inclass circuit troubleshooting activities.
Basic troubleshooting strategies worksheet basic electricity. Suppose that something goes wrong in this voltage divider circuit, and the load voltage suddenly falls to zero. The stardelta transformation may solve this problem. What would you recommend as the next voltmeter measurement to take in troubleshooting the. When doing circuit analysis, you need to know some essential laws, electrical quantities, relationships, and theorems.
On circuit boards of the 1980s and 90s, it was possible to perform repairs with the use of automatic testing tools, which simply do not work on todays pcbs. As an industrial electrician, youll encounter many complex electrical circuits and drives that will break down as they age. Section 6 provides a list of the techniques and a characterization of each based on the time required, cost, access to equipment, ease of use, likelihood of success, and quality of result. Explain what needs to be done when verifying a problem. Properly inspect the condition of an electronic circuit and its components.
Electrical motor control circuits free download for windows. It can be very intimidating when a component on a board gets hot, exhibits unexpected behavior, does nothing at all, or even explodes. Sometimes a circuit might develop some sort of a defect or fault and it is necessary to carry out electrical troubleshooting in such a case. Electronic repair troubleshooting tips and secrets for. Introduction to circuit troubleshooting et 150 troubleshooting learning objectives in this lesson you will. Practical design techniques for sensor signal conditioning, edited by walt kester, analog devices, 1999, isbn0916550206. Basic electronic troubleshooting techniques as an industrial electrician, youll encounter many complex electrical circuits and drives that will break down as they age. Basic electrical troubleshooting a boiler feed pump being powered by two 3500 hp inducti on motors appears to be developing a problem. Circuit troubleshooting based on applying lean six sigma techniques prof. Oct 05, 2010 at the end is just an example how our software uses realworld workorder system to track student while doing electrical troubleshooting with our simulation software, and the detailed analysis report. Mar 20, 2016 understanding basic electricity can be invaluable in both safety, as well as when troubleshooting and repairing an electrical circuit. Specific troubleshooting techniques troubleshooting. Download fulltext pdf download fulltext pdf voltage contrast techniques for integrated circuit troubleshooting technical report pdf available january 1994 with 33 reads.
We have the circuit on the right, with a driving voltage us 5 v, and we want to know u and i. A technician following the divideandconquer troubleshooting strategy begins by measuring voltage across the lower resistor finding 0 volts, then measuring voltage across both resistors finding 12 volts. Then, using ohms law, you can calculate the current. There are some basic troubleshooting steps that you, as an electronic repairer, should pass throw to success any power supply repair or any other type of electronics devices define. Before getting into details of printed circuit board, there are some basics you need to know about circuits. Tec provides a rich 3d environment where professionals will learn and. Even better, can you get a service manual for the unit. Ac voltage source tb1 tb2 tb5 tb4 tb6 tb3 light as you can see in the diagram, there are several terminal blocks tb through which electrical power is routed to the light bulb.
991 1591 511 935 236 1418 1578 427 1407 400 1607 1504 877 677 1037 588 1521 1417 70 1026 1197 667 1390 37 1619 1109 1228 979 1104 558 1189 1141 1316 1200 590 53 200 616