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What is Alternating Current (AC)?

What is Alternating Current (AC)?

Most students of electricity begin their study with what is known as…


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Brushless DC Motor

Brushless DC Motor

Brushless DC motors were developed from conventional brushed DC motors…


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DC Generator Theory

DC Generator Theory

Generators used in battery-charging systems must be regulated so as to…


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Basic Troubleshooting Strategies

Basic Troubleshooting Strategies

A chandelier has five light bulbs in it, and one of them is not…


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Stepper Motor Calculator

Stepper Motor Calculator

A tool designed to calculate the maximum speed, minimum time per step and maximum power of a stepper motor


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Intermediate Electromagnetism and Electromagnetic Induction

Intermediate Electromagnetism and Electromagnetic Induction

As an electric current is passed through a coil of wire, it creates a…


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DC Motor Control Circuits

DC Motor Control Circuits

How is it possible to electrically measure the torque output by a…


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AC Generator Theory

AC Generator Theory

If an electric current is passed through this wire, which direction…


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AC Motor Theory

AC Motor Theory

Electromechanical watt-hour meters use an aluminum disk that is spun…


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AC Motor Control Circuits

AC Motor Control Circuits

Perhaps the most challenging aspect of interpreting ladder diagrams,…


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Inductive Reactance

Inductive Reactance

Don’t just sit there! Build something!! Learning to mathematically…


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Electric Shock

Electric Shock

It is sometimes said regarding electrical safety that, Ït’s not the…


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Stepper Motors

Stepper Motors

Stepper Motor vs Servo Motor A stepper motor is a…


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Pulse Width Modulation

Pulse Width Modulation

Pulse Width Modulation (PWM) uses digital signals to control power…


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DC Motor Theory

DC Motor Theory

If the ends of a wire loop are attached to two half-circular metal…


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Polyphase Motor Design

Polyphase Motor Design

AC Motors Perhaps the most important benefit of polyphase AC power…


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Contactors

Contactors

All About Contactors When a relay is used to switch a large amount of…


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AC Lab - Large Induction Motor

AC Lab - Large Induction Motor

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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Step-up, Step-down, and Isolation Transformers

Step-up, Step-down, and Isolation Transformers

Calculate the voltage output by the secondary winding of a transformer…


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AC Lab - Automotive Alternator as AC Generator

AC Lab - Automotive Alternator as AC Generator

In this hands-on AC electronics experiment, you will use an automotive alternator to generate three-phase AC voltage and learn how alternators can function as both generators and motors.


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Bipolar Junction Transistors as Switches

Bipolar Junction Transistors as Switches

Solid-state switching circuits usually keep their constituent…


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Tesla Polyphase Induction Motors

Tesla Polyphase Induction Motors

Most AC motors are induction motors. Induction motors are favored due…


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Transistor Biasing Calculations

Transistor Biasing Calculations

Although transistor switching circuits operate without bias, it is…


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The “Operational” Amplifier

The “Operational” Amplifier

Long before the advent of digital electronic technology, computers…


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Conventional Transistor Overview and Special Transistors

Conventional Transistor Overview and Special Transistors

A microcontroller is a specialized type of digital computer used to…


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Averager and Summer Circuits

Averager and Summer Circuits

If we take three equal resistors and connect one end of each to a…


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Universal Shift Registers: Parallel-in, Parallel-out

Universal Shift Registers: Parallel-in, Parallel-out

The purpose of the parallel-in/ parallel-out shift register is to take…


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Rules for Limits

Rules for Limits

    RELATED WORKSHEETS: Calculus for Electric Circuits…


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Calculating Power Factor

Calculating Power Factor

As was mentioned before, the angle of this “power…


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Scientific Notation

Scientific Notation

In many disciplines of science and engineering, very large and very…


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The J-K Flip-Flop

The J-K Flip-Flop

Another variation on a theme of bistable multivibrators is the J-K…


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Making a Venn Diagram Look Like a Karnaugh Map

Making a Venn Diagram Look Like a Karnaugh Map

Starting with circle A in a rectangular A’ universe in figure…


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Table (landscape view)

Table (landscape view)

Periodic table of chemical elements.


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Ideal Diode Current and Voltage Calculator

Ideal Diode Current and Voltage Calculator

This calculator solves for any single missing value in the ideal diode I-V equation for a forward-biased PN-junction diode. Parameters are current, saturation current, voltage, temperature, and ideality factor.


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Temperature Coefficients of Resistance Table

Temperature Coefficients of Resistance Table

Temperature coefficient (α) per degree C: Material Element/Alloy…


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Non-Inverting Op-Amp Resistor Calculator

Non-Inverting Op-Amp Resistor Calculator

This calculator determines the bias and feedback of resistors for a non-inverting Op-Amp


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Oscillator Circuits

Oscillator Circuits

Phase shift oscillator. R1C1, R2C2, and R3C3 each provide 60° of…


Textbook

Flyback Switch Mode Regulator Calculator

Flyback Switch Mode Regulator Calculator

A calculator for computing several parameters needed in the design of a flyback switch mode regulator


Tools

VSWR / Return Loss Calculator

VSWR / Return Loss Calculator

A calculator designed to compute the VSWR, reflection coefficient, return loss and matching loss in a transmission line


Tools

Numeration Systems

Numeration Systems

Digital computers communicate with external devices through ports:…


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Power Quality Measurement

Power Quality Measurement

It used to be with large AC power systems that “power…


Textbook

Calculus for Electric Circuits

Calculus for Electric Circuits

∫f(x) dx Calculus alert! Calculus is a branch of mathematics that…


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