Most students of electricity begin their study with what is known as…
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Any kind of switch contact can be designed so that the contacts…
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Electromechanical relays used to start and stop high-power electric…
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In this hands-on electronics experiment, you will use a potentiometer as a variable resistor to control the speed of a motor and learn how to connect a potentiometer as a rheostat.
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Perhaps the most challenging aspect of interpreting ladder diagrams,…
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Counting practice: count from zero to thirty-one in binary, octal, and…
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Since three-phase is used so often for power distribution systems, it…
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Though it may seem strange to cover the elementary topic of electrical…
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The discovery of the relationship between magnetism and electricity…
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What does the normal status of an electrical switch refer to?…
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If we take the equivalent circuit of an SCR and add another external…
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What does it mean, in general terms, to encode something? Conversely,…
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What do you think this logic buffer gate will do, with the output…
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Before the advent of solid-state logic circuits, logical control…
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In this hands-on AC electronics experiment, build a large AC permanent capacitor split-phase induction motor and learn the principles of AC induction motor function.
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Don’t just sit there! Build something!! Learning to analyze digital…
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Just as devices have been made to measure certain physical quantities…
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Don’t just sit there! Build something!! Learning to mathematically…
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In this hands-on AC electronics experiment, build a simple AC permanent capacitor split-phase induction motor and learn the principles of AC induction motor function.
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The interlock contacts installed in the previous section’s motor…
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Calculate the voltage output by the secondary winding of a transformer…
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Protective relays are special power-sensing devices whose job it is to…
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All About Diodes A diode is an electrical device allowing current to…
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Complementary Output Gates It is sometimes desirable to have a logic…
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Perhaps the most challenging aspect of interpreting ladder diagrams,…
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In this hands-on semiconductor electronics experiment, use a bipolar junction transistor (BJT) to switch an LED and learn about the current their amplification.
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Don’t just sit there! Build something!! Learning to analyze digital…
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What is the purpose of the switch shown in this schematic diagram?
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In this hands-on electronics experiment, build an audio amplifier using a vacuum tube (triode) and learn about voltage transformers, how to build a high-voltage DC power supply, and how to use a transformer for impedance matching.
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The variable reluctance motor is based on the principle that an…
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All About Contactors When a relay is used to switch a large amount of…
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In this hands-on electronics experiment, build a multiple LED flasher and learn how to use inductive flyback to generate a voltage pulse that is greater than the supply voltage.
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Don’t just sit there! Build something!! Learning to mathematically…
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Pulse Width Modulation (PWM) uses digital signals to control power…
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It is very important to keep in mind that the “normal”…
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Suppose you were to take a 3 kW electric heater rated for 240 VAC and…
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What is an Insulated Gate Bipolar Transistor (IGBT), and what…
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It is fairly important to use large value resistors (10 MΩ works…
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In ladder logic symbolism, an electromechanical relay coil is shown as…
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This calculator uses Faraday's and Lenz's laws to calculate the magnitude and polarity of the induced electromotive force (EMF) caused by a change in magnetic flux through a closed-loop coil.
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The Skin Depth of Copper in Electrical Engineering As previously…
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Don’t just sit there! Build something!! Learning to mathematically…
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“I consider that I understand an equation when I can predict the…
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SPICE is a computer program designed to simulate analog electronic…
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A special type of relay is one that monitors the current, voltage,…
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Brushless DC motors were developed from conventional brushed DC motors…
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Any kind of switch contact can be designed so that the contacts…
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Power Equation of Ohm’s Law and Joule’s Law …
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One method of addressing the digital ramp ADC’s shortcomings is…
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While the C-B (common-base) amplifier is known for wider bandwidth…
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The armature windings of your DC motor will have very low resistance.…
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Mathematicians use Venn diagrams to show the logical relationships of…
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Most ohmmeters of the design shown in the previous section utilize a…
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A handy all-in-one tool for reading resistor color code values for a 4 band resistor, 5 band resistor, or 6 band resistor.
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Three-Phase Alternator Let’s take the three-phase alternator…
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Shockley Diodes and Silicon Controlled Rectifiers (SCRs) Shockley…
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If your event sensing switch is mechanical in nature, you will likely…
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Contributors to this chapter are listed in chronological order of…
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Our exploration of thyristors begins with a device called the…
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What is the purpose of the switch shown in this schematic diagram?
Worksheets - Motors
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