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DC Generator Theory

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

Brushless DC Motor

Textbook

Brushless DC motors were developed from conventional brushed DC motors…

Tesla Polyphase Induction Motors

Textbook

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

AC Commutator Motors

Textbook

Charles Proteus Steinmetz’s first job after arriving in America…

Stepper Motors

Textbook

Stepper Motor vs Servo Motor A stepper motor is a…

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

AC Instrumentation Transducers

Textbook

Just as devices have been made to measure certain physical quantities…

Servo Motor Systems

Worksheets - Encoders

Explain the operation of this “H-bridge” motor control circuit: At…

What is Alternating Current (AC)?

Textbook

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

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

DC Motor Theory

Worksheets - Encoders

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

AC Motor Theory

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

Reluctance Motor

Textbook

The variable reluctance motor is based on the principle that an…

Single-phase Induction Motors

Textbook

A three-phase motor may be run from a single-phase power source.…

AC Generator Theory

Worksheets - Encoders

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

Single-phase Induction Motors

Textbook

A three-phase motor may be run from a single-phase power source.…

Polyphase Motor Design

Textbook

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

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

Rectifier Circuits

Worksheets - Encoders

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

Other Specialized Motors

Textbook

Shaded Pole Induction Motor An easy way to provide starting torque to…

AC Motor Theory

Worksheets - Encoders

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

DC Generator Theory

Worksheets - Encoders

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

Microcontroller Principles

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Read the following quotation, and then research the term…

Automotive Alternator

Textbook

Project Parts and Materials Automotive alternator (one required, but…

Electric Shock

Worksheets - Encoders

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

Pulse Width Modulation

Textbook

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

Brushless DC Motor

Textbook

Brushless DC motors were developed from conventional brushed DC motors…

AC Commutator Motors

Textbook

Charles Proteus Steinmetz’s first job after arriving in America…

Induction Motor

Textbook

PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF…

Inductive Reactance

Worksheets - Encoders

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

Contactors

Textbook

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

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

Design Project: DC Motor

Worksheets - Encoders

The armature windings of your DC motor will have very low resistance.…

Tesla Polyphase Induction Motors

Textbook

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

AC Instrumentation Transducers

Textbook

Just as devices have been made to measure certain physical quantities…

Octal and Hexadecimal to Decimal Conversion

Textbook

Although the prime intent of octal and hexadecimal numeration systems…

Introduction to Complex Numbers

Textbook

If I needed to describe the distance between two cities, I could…

Make Your Own Multimeter

Textbook

PARTS AND MATERIALS Sensitive meter movement (Radio Shack catalog #…

Insulator Breakdown Voltage

Textbook

The atoms in insulating materials have very tightly-bound electrons,…

Microstrip Inductance Calculator

Tools

This calculator computes the inductance of a microstrip etched on a PCB.

Introduction to Conductance and Conductors

Textbook

By now you should be well aware of the correlation between electrical…

Kelvin (4-wire) Resistance Measurement

Textbook

Suppose we wished to measure the resistance of some component located…

Basic Circuit Troubleshooting

Worksheets - Encoders

Determine if the light bulb will de-energize for each of the following…

The Quadratic Formula

Textbook

Solving for x in a given polynomial equation “ax2 + bx + c…

Rheostat Range Limiting

Textbook

PARTS AND MATERIALS Several 10 kΩ resistors One 10 kΩ…

Conductors, Insulators, and Electron Flow

Textbook

The electrons of different types of atoms have different degrees of…

Class C BJT Amplifiers

Worksheets - Encoders

A common class of operation used in radio-frequency (RF) amplifier…

The “Buffer” Gate

Textbook

If we were to connect two inverter gates together so that the output…

Principles of Radio

Textbook

One of the more fascinating applications of electricity is in the…

Introduction to Analog Integrated Circuits

Textbook

Analog circuits are circuits dealing with signals free to vary from…

Non-right Triangle Trigonometry

Textbook

The Law of Sines (for any triangle) The Law of Cosines (for any…

Simple Circuits

Worksheets - Encoders

Shown here is the schematic symbol for a resistor: What is the purpose…

The “Operational” Amplifier

Textbook

Long before the advent of digital electronic technology, computers…

Active-mode Operation (BJT)

Textbook

When a transistor is in the fully-off state (like an open switch), it…

AC Motor Control Circuits

Worksheets - Encoders

Perhaps the most challenging aspect of interpreting ladder diagrams,…