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What is Alternating Current (AC)?

Textbook

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

Stepper Motors

Textbook

Stepper Motor vs Servo Motor A stepper motor is a…

Reluctance Motor

Textbook

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

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Tesla Polyphase Induction Motors

Textbook

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

Wound Rotor Induction Motors

Textbook

A wound rotor induction motor has a stator like a squirrel cage…

AC Instrumentation Transducers

Textbook

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

Selsyn (Synchro) Motors

Textbook

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

Brushless DC Motor

Textbook

Brushless DC motors were developed from conventional brushed DC motors…

Other Specialized Motors

Textbook

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

AC Commutator Motors

Textbook

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

Boolean Relationships on Venn Diagrams

Textbook

The fourth example has A partially overlapping B. Though, we will…

Contributors (10)

Textbook

Contributors to this chapter are listed in chronological order of…

The J-K Flip-Flop

Textbook

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

555 Ramp Generator

Textbook

PARTS AND MATERIALS Two 6 volt batteries One capacitor, 470 µF…

Factorials

Textbook

Definition of a Factorial Denoted by the symbol “!” after…

Vacuum Tube Audio Amplifier

Textbook

PARTS AND MATERIALS One 12AX7 dual triode vacuum tube Two power…

Digital Codes

Worksheets - Wireless

Counting practice: count from zero to thirty-one in binary, octal, and…

Likely Failures in Proven Systems

Textbook

The following problems are arranged in order from most likely to least…

Resistor Color Codes

Textbook

Try out our Resistor Color Code Calculator in our Tools section.…

Simple Series Circuits

Textbook

On this page, we’ll outline the three principles you should…

Ohmmeter Design

Textbook

Though mechanical ohmmeter (resistance meter) designs are rarely used…

Temperature Coefficient of Resistance

Worksheets - Wireless

It is a common phenomenon for the electrical resistance of a substance…

Contributors (11)

Textbook

Contributors to this chapter are listed in chronological order of…

Current Divider

Textbook

PARTS AND MATERIALS Calculator (or pencil and paper for doing…

Rules for Derivatives

Textbook

Constant rule Rule of sums Rule of differences Product rule Quotient…

IC Fabrication and Packaging

Worksheets - Wireless

What does it mean if an integrated circuit comes in DIP form? What…

Design Project: Simple Component Curve-Tracer Circuit

Worksheets - Wireless

What do each of the oscilloscope axes represent, in real-life terms…

RF Power Ratio Conversion Calculator

Tools

This tool is designed to convert power ratios to decibel

Systems of Numeration

Textbook

Roman Numerals The Romans devised a system that was a substantial…

Contactors

Textbook

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