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