Categories

AC Commutator Motors

Textbook

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

AC Instrumentation Transducers

Textbook

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

Contactors

Textbook

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

Step-up, Step-down, and Isolation Transformers

Worksheets - Appliances

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

Boolean Algebra

Worksheets - Appliances

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

Other Specialized Motors

Textbook

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

Reluctance Motor

Textbook

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

AC Motor Theory

Worksheets - Appliances

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

Brushless DC Motor

Textbook

Brushless DC motors were developed from conventional brushed DC motors…

DC Motor Theory

Worksheets - Appliances

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

Single-phase Induction Motors

Textbook

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

CMOS 555 Long Duration Flyback LED Flasher

Textbook

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

Pulse Width Modulation

Textbook

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

Inductive Reactance

Worksheets - Appliances

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

Wound Rotor Induction Motors

Textbook

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

Design Project: Stepper Motor Driver

Worksheets - Appliances

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

Tesla Polyphase Induction Motors

Textbook

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

Design Project: DC Motor

Worksheets - Appliances

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

What is Alternating Current (AC)?

Textbook

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

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

AC Motor Control Circuits

Worksheets - Appliances

Perhaps the most challenging aspect of interpreting ladder diagrams,…

Resistance Calculator

Tools

This calculator calculates the resistivity of a component based on its resistance value, length, and cross-sectional area.

The TRIAC

Textbook

SCRs are unidirectional (one-way) current devices, making them useful…

Commutating Diode

Textbook

PARTS AND MATERIALS 6 volt battery Power transformer, 120VAC step-down…

Parallel Resistor-Inductor Circuits

Textbook

Let’s take the same components for our series example circuit…

Basic Algebra and Graphing for Electric Circuits

Worksheets - Appliances

Many different equations used in the analysis of electric circuits may…

AC Waveforms

Worksheets - Appliances

Radio waves are comprised of oscillating electric and magnetic fields,…

Rectifier Circuits

Textbook

What is Rectification? Now we come to the most popular application of…

Building Simple Resistor Circuits

Textbook

In the course of learning about electricity, you will want to…

Synchronous Condenser

Textbook

Synchronous motors load the power line with a leading power factor.…

The Common-gate Amplifier (IGFET)

Textbook

Temperature Coefficient of Resistance

Textbook

You might have noticed on the table for specific resistances that all…

Rules for Derivatives

Textbook

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

Full-wave Center-tap Rectifier

Textbook

PARTS AND MATERIALS Low-voltage AC power supply (6-volt output) Two…

Audio Oscillator

Textbook

PARTS AND MATERIALS Two 6-volt batteries Three NPN…

Numeration Systems

Worksheets - Appliances

Digital computers communicate with external devices through ports:…

4-wire Resistance Measurement

Textbook

PARTS AND MATERIALS 6-volt battery Electromagnet made from experiment…

TTL NAND and AND gates

Textbook

Suppose we altered our basic open-collector inverter circuit, adding a…

Insulated Gate Field-Effect Transistors

Worksheets - Appliances

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

Specific Resistance

Textbook

Designing Wire Resistance Conductor ampacity rating is a crude…

DeMorgan’s Theorems

Textbook

A mathematician named DeMorgan developed a pair of important rules…