It may be that you have to move a high wattage item like a space heater or kitchen appliance to another circuit. Basic electrical troubleshooting introduction youtube. Troubleshooting three basic hardwired control circuits used in starting electric motor photo credit. Dec 31, 2015 circuits the previous chapter has listed the symbols representing electrical and electronic components. Remember that you set your pace, in your openlearning. This is your chance to test just how well you are doing.
We just have to take a brief look at some actual electronic components and then we are ready to put together our first circuit. As an industrial electrician, youll encounter many complex electrical circuits and drives that will break down as they age. Local methods for localizing faults in electronic circuits. The capillary would be used as expansion device with rc valve in position for cooling cycle. Remove and solder electronic components from and onto pcb board. This can eliminate the breakers tripping when multiple items are turned on at the same time. A few circuits that require 220v will supply both mains, so that the full 220v can be utilized for higher power applications. 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. Kcl as well as ohms law are used in solving the circuit. Basic circuit analysis 23 example the bridge circuit again we know that the seriesparallel reduction method is not useful for this circuit. Part b discusses typical component characteristics and their functional use within a circuit. Use an analogdigital multimeter to measure voltage, current and resistance for troubleshooting purposes.
As you can see in the diagram, there are several terminal blocks tb through which electrical power is routed to the light bulb. Basic circuit troubleshooting basic electricity pdf version. The power circuit provides power to the motors through contactors, whereas a control circuit controls these contactors through safety interlocks. Part c describes the methods to determine reference designators and the procedures for wire tracing in a circuit. Volume 3 of 4 module 7 basic ac theory this module describes the basic concepts of alternating current ac electrical circuits and. Study unit understanding and using electronic diagrams. Basic troubleshooting strategies all about circuits. Basics of industrial electricity and troubleshooting. Electric circuit theory and electromagnetic theory are the two fundamental theories upon which all branches of electrical engineering are built. A magnetic starter or other motor controllers may include overload devices, or they may be an integral part. If a capillary tube were superimposed on a basic circuit, as shown in figure 26f03b, a complete heat pump refrigerant circuit would now exist. It can change the electrical voltage or current from one level to another. John prisciandaro and dan butchko, birmingham public schools, birmingham, michigan sponsored by.
Nov 29, 2010 jedilike troubleshooting skills come only with experience, but there are some common problems that can be diagnosed quickly, and understanding these common problems and how to check for them is a starting place common to beginners and masters. Electrical troubleshooting 3 measuring voltage drop observe the circuit above. Volume 2 of 4 module 3 dc circuits this module introduces the rules associated with the reactive components of inductance and capacitance and how they affect dc circuits. Download 3000 solved problems in electric circuits pdf. The upper illustration would be a circuit used to raise a cutting unit with a hydraulic cylinder. Electricalengineering and electronicengineering students have frequently to resolve and simplify quite complex circuits in order to understand them or to obtain numerical results and a sound knowledge of basic circuit theory is therefore essential.
Be careful of esd and make sure to check the dc supplies for proper levels. This worksheet and all related files are licensed under the creative commons attribution license, version 1. Introduction to pneumatics and pneumatic circuit problems. Practical troubleshooting of electronic circuits for engineers and. Students will build and experiment with circuits constructed on our fully. Circuit troubleshooting is the highest level of thinking required of many electrical and electronics professionals. Next the problems of the approach will be investigated, and some of them. The lower illustration would be a circuit that uses a hydraulic motor to drive a cutting unit reel. We have the circuit on the right, with a driving voltage us 5 v, and we want to know u and i. Solving a simple circuit of three elementsa simple circuit is solved and power absorbed or supplied by each element is determined. Introduction to pneumatics and pneumatic circuit problems for. Question 1 determine if the light bulb will deenergize for each of the following breaks in the circuit. The first sections will present a simple theory about local reasoning and troubleshooting.
Common test equipment and logical troubleshooting in preceding chapters we have presented the basic operating principles of missile launching systems, and explained how they fit into the. Electric circuit problems with solutions springerlink. Module 2 basic dc theory this module describes the basic concepts of direct current dc electrical circuits and discusses the associated terminology. Chapter 8 automotive electrical circuits and wiring. Basic electrical troubleshooting understanding the wiring diagram and testing a simple circuit on a motorcycle, atv or even your car. Why should we first consider single faults to account for the problems the circuit is having rather than considering interesting combinations of faults which would account for the same problems. Pdf information presentation and troubleshooting in electrical. The problems cover every area of the electrical circuits, from basic modules to complex multiphase circuits, portbased networks, and the use of laplace transforms. The work described in this paper is part of an investigation of the issues involved in making expert problem solving programs for engineering design and for. For minor problems, troubleshooting requires a little knowledge about the circuit and its components working because it involves checking the connections only. Fortunately, electrical circuit troubleshooting is an activity that works well for small groups of students to engage in as well as individual students. Generally, a schematic consists of a control and a power circuit. This can cause a shorted circuit or, even worse, you can get zapped from the electrical current flowing through the circuit. Electric circuits problems and solutions basic physics.
Troubleshooting electrical circuits can be helpful when you are getting overloads on one circuit. Define the first basic troubleshooting step is to look at the symptom carefully and determine what circuits could be causing the failure. Pdf basic circuit theory charles a desoer ernest s kuh. Ohm starts by describing a unit of resistance that is defined by current and voltage.
Become a confident and safe troubleshooter from techniques presented. The following is a short discussion concerning basic electrical troubleshooting. This basic circuit, except for reversal of rc valve is used for heating cycle. Troubleshooting electrical circuits wiring electrical. A circuit like this is very easy to construct, and makes for an excellent classroom demonstration piece.
In order for the obvious to be obvious, the fundamental laws of hydraulics must be kept in mind. The question is how to apply the transformation so that the circuit can become solvable using the seriesparallel reduction or other ac. Chapter 8 automotive electrical circuits and wiring topics 1. Good troubleshooters are rare, and in my opinion that has more to do with the. 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. Massachusetts institute of technology artificial intelligence. The digital multimeter is ideal for use in circuits controlled by solid state devices such. Automotive electrical circuits and wiring 3 101 automotive electrical circuits and wiring introduction learning objective. Which of these appliances can be operated simultaneously without tripping the 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 manner. The test leads are connected in parallel across the circuit load.
Field testing and repairing can be accomplished with basic tools and repair parts which should include the following. Handson basic electricity training troubleshooting acdc. 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. Transformer protection of appliance and equipment connected to ac power supplies. Basic troubleshooting strategies worksheet basic electricity. Basic circuit troubleshooting this worksheet and all related. Aug 03, 2010 this feature is not available right now. Go directly to the answers and charts you need through a detailed index and reference. Solving combination circuit problems the basic technique used for solving dc combination circuit problems is the use of equivalent circuits.
Attendees will experience live circuit faults in a real world scenario. Dec 31, 2015 basic principles in using a drawing and meter in troubleshooting circuits to identify a faulty section, follow the guidelines given below, along with a drawing and a meter. The work described in this paper is part of an investigation of the issues. Georg ohm was a bavarian scientist who studied electricity. This total load is not only the basic load that must be moved, but also includes any. Understanding the basic hydraulic systems and components can be of great value when troubleshooting and testing hydraulic equipment. Capitulo 2 automotive electrical circuits and wiring. A kitchen in north america has three appliances connected to a 120 v circuit with a 15 a circuit breaker. Pdf lesson 1 troubleshooting with electrical schematics. A circuit is a closed loop that allows charge to move from one place to another. Having an effective troubleshooting plan and following it can help obtain this feeling of satisfaction. The author is very much in favour of tutorials and the solving of problems as a method of.
Wiring around your home welcome to division v of the 4h electric project congratulations. Introduction to pneumatics and pneumatic circuit problems for fpef trainer fluid power education foundation 3333 n. An electrician is troubleshooting a faulty light circuit, where the power source and light bulb are far removed from one another. Suppose a technician were troubleshooting the following circuit, whose light bulb refused to light up. Make all necessary adjustments and lastly always perform a safety ac leakage test before returning the product back to the customer.
Lets say you plug in your circuit, and something is wrong. Voltage measurements should always be made with the circuit under power. Basic troubleshooting strategies basic electricity pdf version. A virtual troubleshooting exercise such as this one is a good way to start students thinking in the right ways to becoming effective troubleshooters. Whenever you are troubleshooting an electrical circuit, try to check as many things as possible while power is removed. A loose wire might be the only problem avoid part swapping by thinking logically. Lesson 1 troubleshooting with electrical schematics. Identify and measure most of the basic electronic components so that you can start to troubleshoot any type of electronics equipment. A quality multimeter multitester capable of reading less than one ohm and with a specific diode testing fun basic electrical tools including cutters, soldering iron. Troubleshooting three basic hardwired control circuits used. Introduction to basic electronics, electronic components and projects. Willy grueber, electrical supervisor, epcor edmonton. Oct 09, 2017 basic electronic troubleshooting without schematics.
Ohms law, kirchhoffs voltage and current laws, nodesbranches and loops, series elements and voltage division, parallel elements and current division. These circuits are easy to use, and are found in many applications. Power cordplug temporarily connects an appliance or an equipment to. In order to construct a building that will last into the future, a strong foundation is a prerequisite. In any troubleshooting situation, no matter how simple or complex the hydraulic system, always start with the basics. 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. Basic circuit theory charles a desoer ernest s kuh 1969 pdf copy. A good course for developing troubleshooting skills. Mar 20, 2016 understanding basic electricity can be invaluable in both safety, as well as when troubleshooting and repairing an electrical circuit. Part a identifies basic symbols used in circuit schematics.
Basic control circuit for dol directonline starter. In this chapter, you will learn basic problemsolving analysis, common circuit faults, various troubleshooting methods, and testing procedures for the most. Switches necessary to turn the electrical circuit on or off connecting wires to create a complete circuit path through which current flow from the source going to the circuit load. 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. In the division v manual you will build upon those things. Read the logic of a circuit and make an analysis before meter tests are made. Its a great for troubleshooting circuits and is capable of measuring both ac and dc voltage. Many branches of electrical engineering, such as power, electric machines, control, electronics, communications, and instrumentation, are based on electric circuit theory. See basic electronics, navpers 10087b, for a more detailed description of this meter. To simplify a complex circuit to a simple circuit containing only one load, equivalent circuits are substituted on paper for the complex circuit they represent. Troubleshooting of an electronic circuit is a process of having a special outlook on components that comes out with remedies to repair it. Resistors in circuits problems the physics hypertextbook.
Troubleshooting is the process that determines the cause of the problem in the electronic circuit by examining the affected area of it, and then by taking appropriate action. The lower illustration would be a circuit that uses a hydraulic motor to drive a. Most circuit problems are due to incorrect assembly, always double check that your circuit. Basic electronic troubleshooting techniques as an industrial electrician, youll encounter many complex electrical circuits and drives that will break down as they age. The stardelta transformation may solve this problem. Components in the circuit allow us to control this charge and use it to do work. Identify charging, st arting, ignition, and accessory circuit components, their functions, and maintenance procedures. In all practical problems of electrical calculations, it. Diodes and diode circuits tlt8016 basic analog circuits 20052006 6 exercise 3.
Ive used such a circuit, constructed on a piece of pegboard 2 feet by 4 feet, with metal screws acting as test points, for students to develop their troubleshooting skills in front of the class where everyone may observe and learn together. This tutorial will give you an introduction to basic electronics for beginners. 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. To understand how to troubleshoot control circuits, it is very important to understand the working of some basic control circuits, as given in figure 7. The educational context of electric circuits is sensible for studying troubleshooting as the behavior of basic circuits can be predicted analytically through a. Youve successfully completed the first four units of the 4h electric program and are now ready to learn about even more complex aspects of the world of electricity. 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.
Basic motorcycle electrical troubleshooting using a. Understand the basics of electricity generation and delivery. The construction of a basic leadacid celltype battery is as follows. This is an integrated circuit that has regulation and protection circuits built into one package. This test will assess your knowledge of and ability to apply the principles of basic. But an understanding of the theory of operation is only. This subcourse presents basic schematic interpretation in three parts.
Basic circuit troubleshooting worksheet basic electricity. Learn how to effectively diagnose electrical control circuit problems. Understanding and using electronic diagrams 5 in this simple power supply, all the voltage regulation functions are done by u 1, which is a 7812 positive voltage regulator. The final basic troubleshooting step is to correct the problem. Check the incoming supply voltages first check for voltages at the specific test points in circuit as per manufacturers test point data sheet do. Troubleshooting an open circuit faults in the control circuit.
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