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Relay Construction

Textbook

Electricity and Magnetism An electric current through a conductor will…

AC Bridge Circuits

Textbook

As we saw with DC measurement circuits, the circuit configuration…

Switch Contact Design

Textbook

A switch can be constructed with any mechanism bringing two conductors…

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Thyristor Application Circuits

Worksheets - Electromechanical

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

Linear Computational Circuitry

Worksheets - Electromechanical

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

DC Motor Control Circuits

Worksheets - Electromechanical

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

Protective Relays

Textbook

A special type of relay is one that monitors the current, voltage,…

Switch Types

Textbook

Though it may seem strange to cover the elementary topic of electrical…

Simple Combination Lock

Textbook

PARTS AND MATERIALS 4001 quad NOR gate (Radio Shack catalog #…

Fuses

Textbook

Normally, the ampacity rating of a conductor is a circuit design…

Brushless DC Motor

Textbook

Brushless DC motors were developed from conventional brushed DC motors…

Switches

Worksheets - Electromechanical

What is the purpose of the switch shown in this schematic diagram?

Special-output Gates

Textbook

Complementary Output Gates It is sometimes desirable to have a logic…

Sensing AC Magnetic Fields

Textbook

PARTS AND MATERIALS Audio detector with headphones Electromagnet coil…

Switches, Process Actuated

Textbook

It is very important to keep in mind that the “normal”…

Impedance Matching With Transformers

Worksheets - Electromechanical

Suppose you were to take a 3 kW electric heater rated for 240 VAC and…

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

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

Pulse Width Modulation

Textbook

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

Capacitive Reactance

Worksheets - Electromechanical

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

Waveguides

Textbook

A waveguide is a special form of transmission line consisting of a…

Power Dissipation

Textbook

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

Programmable Logic Technology

Worksheets - Electromechanical

Define the following acronyms as they apply to digital logic circuits:…

High Voltage Ohmmeters

Textbook

Most ohmmeters of the design shown in the previous section utilize a…

AC Capacitor Circuits

Textbook

Capacitors Vs. Resistors Capacitors do not behave the same as…

Mutual Inductors

Textbook

Mutual inductors are inductors that capitalize the effect of mutual…

Transistor Ratings and Packages (BJT)

Textbook

Like all electrical and electronic components, transistors are limited…

PWM Power Controller

Textbook

PARTS AND MATERIALS Four 6 volt batteries One capacitor, 100 µF…

Coil Inductance Calculator

Tools

This calculator helps you compute the inductance of a coil.

Active Filters

Worksheets - Electromechanical

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

Contributors (13)

Textbook

Contributors to this chapter are listed in chronological order of…

Stripline Crosstalk Calculator

Tools

This tool is designed to calculate cross-talk coefficient and coupled voltage for a stripline

Factoring Equivalencies

Textbook

Factoring Identities :   a2 - b2 = (a + b) (a - b) a2 + 2ab + b2…

Single-phase Induction Motors

Textbook

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

Bipolar Junction Transistors

Textbook

The bipolar junction transistor (BJT) was named because its operation…

Positive Feedback

Textbook

As we’ve seen, negative feedback is an incredibly useful…

AC Instrumentation Transducers

Textbook

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

Parallel Resistance Calculator

Tools

Calculate the total resistance of resistors in parallel with ease!

Introduction to AC Circuits

Textbook

“AC” stands for Alternating Current, which can refer to…

Elementary Circuits

Worksheets - Electromechanical

In the simplest terms you can think of, define what an electrical…

Pulsed-light Sensor

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN…

Negative Binary Numbers

Textbook

With addition being easily accomplished, we can perform the operation…

555 Timer Astable Circuit

Tools

In an astable circuit, the output voltage alternates between VCC and 0 volts on a continuous basis.

Factors Affecting Capacitance

Textbook

There are three basic factors of capacitor construction determining…

Encoder

Textbook

What is an Encoder? An encoder is a circuit that changes a set of…

Optoelectronic Devices

Worksheets - Electromechanical

In this circuit, the electric motor is supposed to turn on whenever…

Design Project: AC-DC Power Supply

Worksheets - Electromechanical

Safety is very important when designing and/or building a device…

AC Commutator Motors

Textbook

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

The Exclusive-OR Function: The XOR Gate

Textbook

What Is an XOR Gate? One element conspicuously missing from the set of…

Insulated Gate Bipolar Transistors

Worksheets - Electromechanical

What is an Insulated Gate Bipolar Transistor (IGBT), and what…

Rheostat Range Limiting

Textbook

PARTS AND MATERIALS Several 10 kΩ resistors One 10 kΩ…

Resistors

Worksheets - Electromechanical

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

Digital Codes

Worksheets - Electromechanical

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

Basic Electromagnetism and Electromagnetic Induction

Worksheets - Electromechanical

When lightning strikes, nearby magnetic compass needles may be seen to…

Mesh Current Method and Analysis

Textbook

The Mesh-Current Method, also known as the Loop Current Method, is…

Op-Amp Voltage and Gain Calculator

Tools

A calculator for computing the gain and output voltage of an operational amplifier

Series and Parallel Component Equivalent Values

Textbook

Series and Parallel Resistances     Series and Parallel…

Time-Delay Electromechanical Relays

Worksheets - Electromechanical

What does the normal status of an electrical switch refer to?…

Waveguide Calculator (Rectangular)

Tools

This tool calculates the cutoff frequency of a rectangular waveguide