Basic electricity and dc circuits pdf

The path that electricity follows is called a circuit. Electric circuits pdf notes ec notes pdf eduhub smartzworld. Covers basic methods of measuring current, voltage, and resistance during electrical troubleshooting procedures. Basic electrical engineering pdf notes bee pdf notes. If you plug something in the wall it runs on ac although some devices internally convert the ac alternating current into dc. Use mydaq digital multimeter dmm to test mysnap components if they appear to be damaged or not working properly.

Download 3000 solved problems in electric circuits. Dac worldwides basic electricity training system 400 examines basic ac and dc electrical principles. Basic electricity and electronics online training covers basic, nonmathematical approach to understanding principles of electricity. If it flows in only one direction whether steadily or in pulses, it is called direct current dc.

So if you know two of the three characteristics, your can calculate the third one. In other words, the net current in a node is zero or 0 i in i out. Dc circuits are simply those in which the current moves in one direction only thus direct current dc. Therefore, the basic electric circuit theory course is the most.

They must all work together to provide a source of electricity for the vehicle to operate. Circuit theory i power and energy energy is the capacity to do work, measured in joulesj. Online basic electricity and electronics course tpc training. Thus, the basic power formula is p e x i, where e is voltage and i is current in the circuit. Basic electronics 2 nov 98 overview this study guide is designed to familiarize you with the advanced electrical and fundamental electronics knowledge and skills required by bellsouths technical jobs and covered by the basic electronics test. Dc circuits open textbook library center for open education. When an electric circuit flows through a conductor, a magnetic field or flux develops around the conductor.

When the diode is facing in the proper direction to permit current, the lamp glows. Dc stands for direct current and is usually low voltage such as 6 volts or 12 volts. Introduces electron theory, static electricity, electrons in motion, and magnetism. Tlc recommends that you download and save this pdf document and assignment to your computer desktop and open it with adobe acrobat dc. The text is arranged to let you progress at your own pace, and concepts and terms are introduced as you need them, with many detailed examples and illustrations. Dc circuits and electrical power university of plymouth. The manual contains sufficient exercises for a typical 15 week course using a two to three hour practicum period. The electric circuits notes pdf ec pdf notes book starts with the topics covering voltage and current sources, network reduction techniques, r. The highest flux density occurs when the conductor is formed into a coil having many turns. A chemical reaction inside the battery works like a pump to push electricity. Dc electricity can be created by a battery or dc generator. Ohms law is the basic formula used in all ac and dc electrical circuits. The above dc circuit consists of the voltage source and resistance with a specific current flow.

Boat building standards basic electricity direct current. As we already know, current is the same throughout a series circuit, which is already given as 0. The impedance in an ac circuit is similar to a resistance in a dc circuit. In electronics and electrical technology, a coil is usually known as an inductor. This current varying in parallel circuits brought about kirchoffs next big law in basic electrical engineering, kirchoffs current law kcl. Electricity flows from the negative side of a battery, through the wires, and lights the bulb.

The restriction to the flow of electrons through a conductor is called resistance and it is measured in ohms and abbreviated. Explains circuit componentsconductors, insulators, resistors. Basic dc theory basic dc circuit calculations figure 21 example 1 series circuit solution. The most fundamental law in electricity is ohms law or vir. Chapter 8 automotive electrical circuits and wiring. The electricity continues to travel around to the positive side of the battery.

Covers basic methods of measuring current, voltage, and resistance. This book covers direct current dc circuit theory and is broken up into three modules. Electrical science module 2 basic dc theory ntc sites. Electrical designers use it to determine how much voltage is required for a certain load, like a motor, a computer, or even a house full of appliances. Basics of electricity by ron kurtus physics lessons. The schematic diagram is used in all your future work in electricity and electronics. Use eye protection when experimenting on your own circuits. The handbook includes information on alternating current ac and direct current dc theory, circuits, motors, and generators.

A simple dc circuit is given in below figure to make the reader get aware of dc circuit components and its parameters. Many of the small electronic devices we commonly use, such as cell phones, calculators, and ipods all run on dc. Basic electricity fundamentals information in power and energy. Finding motor hp horse power, kva kilovolt ampere kw input, when motor hp is known kw kilowatts amperes, when kva is known. Module 2 basic dc theory this module describes the basic concepts of direct current dc electrical circuits and discusses the associated terminology. We can find the following quantities by using below formulas chart electrical formulas in dc full load current in amperes alternating current ac motors alternating current ac single. Construction, principle, operation and application of i single phase transformer ii single phase induction motor iii dc motor. The dc source allows the electricity or current to flow with an unvarying polarity that doesnt change with time. Subject basic electrical engineering topic introduction to basic electrical engineering faculty ranjan rai gate academy plus is an effort to initiate free online digital resources for. Batteries and circuits two things are needed to make a an electricity do something useful. But it was alessandro volta who created the most common dc power source, the battery for this invention the unit volt was named after him.

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. The sum of the currents entering a junction is equal to the sum of the currents leaving that junction. It will also familiarize you with the test, help you decide if youre ready to take. It contains traditional topics in electric circuit analysis and matrix methods for. Module 1 covers the basics for circuits that include dc sources voltage or current and resistors. The resulting current is then called direct current or dc electricity.

As mentioned above in the introduction, a circuit is an interconnection of elements. An electric circuitis an interconnection of electrical elements. Basic electricity and dc circuits download free epub, pdf created date. The history of electricity starts more than two thousand years ago, with the greek philosopher thales being the earliest known researcher into electricity. Basic definitions and dc circuits higher education.

In order to be able to work with dc we need to convert the alternating current ac from the outlets. A direct current dc is a current that remains constant with time. In other words, it is a measurement of the work required to move a unit charge between two points. Direct current dc electrical circuits by ron kurtus. S and average values and form factor for different periodic wave forms, series rl, rc, rlc and parallel combination with variation of various parameters, faradays laws of electromagnetic. Handson basic electricity training troubleshooting acdc. Volume 3 of 4 module 7 basic ac theory this module describes the basic concepts of alternating current ac electrical circuits and discusses the associated terminology. Welcome to the dc electrical circuits workbook, an open educational resource oer. When we see a value such as 10 volts, it is a measurement of the potential difference between two. Your car also uses dc and most small boats use only dc. The basic dc circuit is the easiest to understand, so the chapter begins with the basic circuit and from there works into the basic schematic diagram of that circuit. Analyze various dc circuits to find resistances, currents, and voltages at any given point.

A wall adapter transforms ac into dc, the wall adapter in our lab kit transforms 120 vac into 912vdc. The basic charging system consists of a battery, alternator, voltage regulator, ignition switch, and indicator light or indicator gauge or both. Apply kirchoffss laws laws to find currents and voltages in complex circuits. As useful and as easy to understand as dc is, it is not the only kind of electricity in use. Draw arrows on the picture to show the path of the electricity. An electrical current can flow in either of two directions through a conductor. It is very important that you become familiar with the symbols that are. These vis enable students to examine various scenarios in circuits or control panels and, hence, provide an excellent tool for. Even though module 1 is not very difficult, it forms the foundation for more complicated topics in modules 2 and 3 so it is important to have a firm grasp of all module 1 topics before moving on. Always use a power switch to remove power when building circuits.

A simple electric circuit consists of a source such as a battery, wires as conducting medium and a load such as a light bulb. But for now, well just concern ourselves with dc circuits. The battery provides required energy for flow of electrons, to the light bulb. Ac and dc current this is the third characteristic of electricity. Fundamentals of direct current circuits cedengineering. We are going to use a battery to provide the electrical potential. I direct current dc modern life could not exist if it were not for electricity and electronics. The basic electricity and electronics textbook covers basic, non mathematical approach to understanding principles of electricity.

Dc circuits outline 1 basic concepts 2 basic laws 3 methods of analysis 4 circuit theorems 5 operational ampli. The goal of this workbook is to provide a large number of problems and exercises in the area of dc electrical circuits to supplement or replace the exercises found in textbooks. Module 6 dc motors this module describes the types of dc motors and includes discussions of speed control, applications, and load characteristics. It is offered free of charge under a creative commons. The v is for voltage, which means the potential difference between two charges. This laboratory manual is intended for use in a dc electrical circuits course and is appropriate for two and four year electrical engineering technology curriculums.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. Basic electrical engineering introduction to basic. Introduction to dc circuits electric voltage and current. Basic electricity and dc circuits download free epub, pdf.