Fundamental electrical engineering concepts and theory
The windings of many medium and small sized transformers are protected by restricted earth fault (REF) systems. The illustration shows the principal of...
Variable frequency drives are widely used to control the speed of ac motors. This note looks at the mechanisms which enable drive units to control the...
Everything physical in electrical engineering from insulations to conductors revolves around materials. Here we are listing common materials along with...
When current flows within a wire, a magnetic field is created. The potion of this magnetic field perpendicular to the wire is called the magnetic flux...
Maxwell's Equations are a set of fundamental relationships, which govern how electric and magnetic fields interact. The equations explain how these fields...
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Most installations involve some form of lightning protection system which is connected to an earth electrode. The function of the earth electrode is to...
This post is quick introduction and overview to different railway electrification voltages used in answer to a question sent in via email. While there...
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If you are working on a large plan, get the real coordinates [latitude, longitude] for two or more points and add them to the drawing. That way you can...
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