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What is Alternating Current (AC)?

Textbook

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

Rectifier Circuits

Worksheets - DC Motors

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

Single-phase Induction Motors

Textbook

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

Design Project: Stepper Motor Driver

Worksheets - DC Motors

At first it may seem pointless to have the four buffer gates following…

Oscilloscope Trigger Controls

Worksheets - DC Motors

A very useful tool for observing rotating objects is a strobe light.…

AC Commutator Motors

Textbook

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

Bipolar Junction Transistors as Switches

Worksheets - DC Motors

Solid-state switching circuits usually keep their constituent…

AC Generator Theory

Worksheets - DC Motors

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

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

Flyback Switch Mode Regulator Calculator

Tools

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

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…

Stepper Motor Calculator

Tools

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

Inductive Reactance

Worksheets - DC Motors

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

CMOS 555 Long Duration Flyback LED Flasher

Textbook

PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…

Reluctance Motor

Textbook

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

Selsyn (Synchro) Motors

Textbook

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

Servo Motor Systems

Worksheets - DC Motors

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

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

Stepper Motors

Worksheets - DC Motors

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

Passive Filter Circuits

Worksheets - DC Motors

In very simple, qualitative terms, rate the impedance of capacitors…

Basic AC-DC Power Supplies

Worksheets - DC Motors

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

Basic Circuit Troubleshooting

Worksheets - DC Motors

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

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

Bipolar junction transistors (Also known as BJTs) can be used as an…

Diodes

Textbook

Factors Affecting Inductance

Textbook

There are four basic factors of inductor construction determining the…

More on AC “polarity”

Textbook

Complex numbers are useful for AC circuit analysis because they…

The NOT Gate

Textbook

The single-transistor inverter circuit illustrated earlier is actually…

Voltmeter Impact on Measured Circuit

Textbook

Every meter impacts the circuit it is measuring to some extent, just…

The Shockley Diode

Textbook

Our exploration of thyristors begins with a device called the…

Active Filters

Worksheets - DC Motors

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

Introduction to Operational Amplifiers (Op-amps)

Textbook

What is an Operational Amplifier (Op-amp)? Operational Amplifiers,…

Electrical Transients

Textbook

This chapter explores the response of capacitors and inductors to…

Parallel Wire Inductance Calculator

Tools

This tool is designed to calculate the inductance of two parallel wires

Basic Electromagnetic Relays

Worksheets - DC Motors

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

Microstrip Wavelength Calculator

Tools

A tool designed to calculate the guided wavelength inside a microstrip.

Series and Parallel Component Equivalent Values

Textbook

Series and parallel resistances Series and parallel inductances…

Common-Emitter Amplifier

Textbook

PARTS AND MATERIALS One NPN transistor—model 2N2222 or 2N3403…

Memory Devices

Worksheets - DC Motors

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

Superposition Theorem

Textbook

Superposition theorem is one of those strokes of genius that takes a…