Online Circuits eLearning

Component Identification: Semiconductors - On-Line Training Web-training with certification test for electronic assembly personnel, who deal with semiconductors in their work. Diodes, transistors, integrated circuits, physical characteristics, markings PCB and circuit diagram symbols for components Function of semiconductor types Polarity requirements Package types. LearnTech training incorporates interactive learning checks throughout the instructional  more...

Electrical Safety "Electrical Safety" is for all workers who work around electricity and electrical equipment. Electrical accidents can damage equipment, putting companies "out of production" for days or even weeks. Sparks from frayed wires and machinery can start fires and cause explosions. Electricity can harm people even more directly through shock and electrical burns. Your employees will learn how  more...

Electricity and Electronics Interactive Training Teach or learn electricity and electronics using interactive computer based software. The material includes topics from ohms law to op amps in an easy to use format. All presentations include self scoring activities. Each use of an activity has new randomly selected parameters chosen to hold student interest. Functional trial-ware can be downloaded from our web site.  more...

Overcurrent Protection ... of overcurrent conditions, including overloads and short circuits Causes of bolted fault, arcing fault and ground fault short circuits NEC requirements for overcurrent protection Design of overcurrent protection devices, including fuses and circuit breakers Location of overcurrent protection devices to shield them from damage and to protect personnel and surroundings State Board  more...

DC Power Supplies Fundamental Concepts ...s generally require low-voltage DC sources to power their circuits. Some devices use battery or even solar power, but all others need a DC power supply, typically connected to a house or office AC (alternating current) wall outlet. These include radios, stereo systems, TV, computers, and other devices which we use daily. The discussion starts with the primary power source - the wall socket,  more...

AC Single Phase Energy ...An introduction to the units, components and basics of ac circuits is presented on the way to realizing the energy calculation objective. The material is mainly intended for the non electrical engineer who requires a basic understanding of single phase electrical power systems. Electrical engineers who have worked a considerable time in other areas will also find the course useful. The course  more...

Alternating Current Fundamentals ...ge impedance, and to provide electrical isolation between circuits. A basic transformer consists of two sets of coils or windings close to each other (sometimes wrapped around an iron or ferrite "core"). Each set of windings is simply an inductor. Power is fed into one coil (the "primary"), which creates a magnetic field. The magnetic field causes current to flow in the  more...

Transformer Fundamentals ...ge impedance, and to provide electrical isolation between circuits. A basic transformer consists of two sets of coils or windings close to each other (sometimes wrapped around an iron or ferrite "core"). Each set of windings is simply an inductor. Power is fed into one coil (the "primary"), which creates a magnetic field. The magnetic field causes current to flow in the  more...

Circuit Protection Devices ... That depends on the circuit and its components. For some circuits, 1 ampere would be too much current, while for other circuits 1 ampere would be perfectly acceptable. Circuit protection devices protect electrical equipment by rapidly disconnecting power to components in the event of abnormal overload conditions resulting from excessive voltages, ground faults, and accidental shorting of a  more...

Wiring Techniques ...ciples of circuit connections and procedures, and install circuits in various applications. This 3-hr course is based entirely on Naval Education and Training Materials (NAVEDTRA 14176), Electricity and Electronic Training Series; Module-4 and covers Chapter-2 titled ? Wiring Techniques? . This course will be extremely helpful to engineers who: a) specify wiring techniques in project  more...

A Unique and Understandable Way to Look at Three Phase Circuits ...magic and mystique that surrounds the idea of three phase circuits. With that in mind, this course starts by reviewing single phase alternating current circuits including resistive, capacitive, and inductive circuits. This is a quick review emphasizing voltage, current, and power relationships in these three common circuit elements. Waveforms and their relationship to vectors is shown. Then  more...

Power Factor Correction ...ewing direct current and single phase alternating current circuits, including resistive, capacitive, and inductive circuits. This is a quick review emphasizing voltage, current, and power relationships in these three common circuit elements. Waveforms and their relationship to vectors are shown. Line voltage drops and line power losses are examined. This course was designed for both engineers  more...

DC Circuit Switching Transients ... to benefit engineers who design, use, inspect, or repair circuits that contain DC power sources and accompanying DC components. Application of DC circuits includes control, instrumentation, and motor excitation. Whereas both AC and DC circuits as well as transmission lines are susceptible to transient phenomena, DC components are particularly subjected to transients caused by current  more...

Reactance in AC Circuits - Fundamental Concepts Reactance is the measure of the opposition to the flow of alternating current caused by the inductance and capacitance in a circuit rather than by resistance. Steady electric currents flowing along conductors in one direction undergo opposition called electrical resistance, but no reactance. Reactance is present in addition to resistance when conductors carry alternating current. Reactance also  more...

Power Supplies Using Electron Tubes ...ubes or semiconductors. Although most of the power supply circuits using electron tubes are outdated, they still show the same basic concepts that our modern solid-state devices have replaced. Many power supplies today still trace back to the basic circuits. The power circuits are typically made up of four basic sections: 1) Transformer, 2) Rectifier, 3) Filter and 4) Regulator. The  more...

Basic Electrical Theory - Electricity and Magnetism ...e is the force that pushes the current through electrical circuits. Current (which is measured in amperes) is the rate of flow of electrical current. Resistance is the total opposition to the flow of electricity and is measured in ohms. The scientific definition of an ohm is the amount of resistance that will restrict 1V of potential to a current flow of one ampere. The relationship between  more...

Basic Direct Current DC Theory ...positive end of the source to the negative terminal. DC circuits may be in series, parallel or a combination. Understanding DC circuits is important for learning about the more complex AC circuits. This course introduces the basic electricity and electrical circuit concepts associated with direct current. Topics include calculation of current, voltage, resistance and power in series, parallel  more...

Basic Operational Amplifier Design ...n of single stage, voltage feedback operational amplifier circuits. It shows how to easily characterize the input and output characteristics using basic network analysis methods. Several generic circuit types are presented. The course is written for professional electrical engineers. The student must take a multiple-choice quiz consisting of sixteen (16) questions at the end of this course to  more...

Fuses and Circuit Breakers ...uilding or industrial facility, is designed and built the circuits should be selectively coordinated. This means that when (not if) a fault develops; only the part of the circuit involved in the fault should be disconnected allowing power to remain available for the rest of the facility. A protection device (fuse or circuit breaker) should only operate if it is directly involved with the fault.  more...

First Order RLC Circuits Time Domain Analysis ...e is a refresher in basic network analysis of passive RLC circuits using discreet passive (R) resistor, (L) inductor and (C) capacitor components. The complete response for each of the 4 basic circuits has transient and steady state terms. The sum of the transient and steady state terms comprises the complete response of the circuit. Once we have the complete response of a circuit we can alter  more...

Direct Current Circuits Fundamentals ...tricity, which flows back-and-forth in a conductor. In DC circuits, the polarity of the voltage source and current does not change over time. The direction of the flow of current in a circuit is always taken to be the direction in which a positive charge would move. By convention, we show DC current flow as originating at the positive terminal of the source, traveling through the circuit and  more...

Introduction to Digital Logic Circuits ...circuits are very versatile circuits. They are used extensively in computers, telecommunications and manufacturing. Digital logic circuits are also used in many devices and products: hand-held devices, appliances, medical devices, alarm systems, energy management systems, automobiles, and aircraft. The object of the course is to provide an introduction to digital logic operations, components  more...

Industrial Sensors and How They Work ...near over a limited range. In any case, modern electronic circuits can linearize many non linear responses. In some devices the non linearity is used to cause a switching action. This course was designed for engineers of all disciplines. When working with sensors and measuring devices, it is very helpful to have a basic idea of what properties are being changed by the measured parameter.  more...