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A more connected and convenient vehicle

In partnership with Texas Instruments

Our advancements in body electronics, infotainment and telematics technologies have made vehicles…

Analog Power and Signal Chain in Automotive Body Motor EEs

In partnership with Texas Instruments

Learn more about the end equipments power and signal chain components are part of in automotive body…

AC Motor Theory

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

AC phase

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If we were to express the series-connected DC voltages as phasors…

CMOS 555 Long Duration Flyback LED Flasher

Textbook

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

Design Project: LED Stroboscope

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A technician uses a stroboscope to “freeze” the rotation of a…

Circuits and the Speed of Light

Textbook

Suppose we had a simple one-battery, one-lamp circuit controlled by a…

Rectifier Circuits

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

Thyristor Application Circuits

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

Simple Circuits

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

CMOS 555 Long Duration Red LED Flasher

Textbook

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

Light-Pulse Switch

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It is fairly important to use large value resistors (10 MΩ works…

Special-purpose Diodes

Textbook

Schottky diodes Schottky diodes are constructed of a metal-to-N…

Static Electricity

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What does it mean for an object to have an electric charge? Give an…

Digital Display Circuits

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What is the purpose of a seven-segment decoder circuit? What is a…

CMOS 555 Long Duration Blue LED Flasher

Textbook

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

Current Divider Circuits

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

Thyristors

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

Series-Parallel DC Circuits

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

LED Resistor Calculator

Tools

An LED resistance calculator is perfect for when you have a single LED and need to know which resistor you should use.

Convert MCD to Lumens

Tools

This calculator is useful for calculating the luminous flux for LEDs where the angle is known.

Switches

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

Network Protocols

Textbook

Aside from the issues of the physical network (signal types and…

Specific Resistance of Conductors

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Given two lengths of metal wire, which one will have the least…

Wound Rotor Induction Motors

Textbook

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

Resistor Color Codes

Textbook

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

Gas Discharge Tubes

Textbook

If you’ve ever witnessed a lightning storm, you’ve seen…

Correct use of Ohm’s Law

Textbook

Reminders When Using Ohm’s Law One of the most common mistakes…

T-Match Impedance Matching Circuits

Tools

A tool designed to compute the values to be used in a T-match Impedance Circuit

Voltmeter Impact on Measured Circuit

Textbook

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

Introduction to Discrete Semiconductor Circuits

Textbook

A semiconductor device is one made of silicon or any number of other…

Balanced Attenuator Calculator

Tools

This balanced attenuator calculator helps you determine the resistor (R1) values for a balanced attenuator.

Complex Number Arithmetic

Textbook

Since complex numbers are legitimate mathematical entities, just like…

Inductive Reactance

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

Time Constant Circuits

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Generally speaking, how many “time constants” worth of time does…

Multi-Stage Transistor Amplifiers

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

What Is the Skin Effect?

Textbook

The Skin Depth of Copper in Electrical Engineering As previously…

T-Pad Attenuator Calculator

Tools

This calculator helps you determine the values of the resistors R1 and R2 to be used for a T-pad attenuator.

Polyphase Motor Design

Textbook

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

AC Phase

Textbook

Things start to get complicated when we need to relate two or more AC…

ElectroStatic Discharge

Textbook

At the start of this book, we discussed static electricity and how it…

Capacitance

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Write an equation describing the precise mathematical relationship…

Digital Logic With Feedback

Textbook

With simple gate and combinational logic circuits, there is a definite…

Unit Conversion Calculator

Tools

Convert to and from different units of length, weight, power, temperature and torque

Factors Affecting Inductance

Textbook

There are four basic factors of inductor construction determining the…

Polar Form and Rectangular Form Notation for Complex Numbers

Textbook

In order to work with complex numbers without drawing vectors, we…

Review of R, X, and Z (Resistance, Reactance and Impedance)

Textbook

Before we begin to explore the effects of resistors, inductors, and…

Ohmmeter Design

Textbook

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

Counter Modulus

Textbook

Incomplete

Biasing Techniques (JFET)

Textbook

Diode Ratings

Textbook

In addition to forward voltage drop (Vf) and peak inverse voltage…

Design Project: AC-DC Power Supply

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

Positive Feedback OpAmp Circuits

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

Soldering

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Both soldering irons and soldering guns are tools used in the process…

Potato Battery

Textbook

PARTS AND MATERIALS One large potato One lemon (optional) Strip of…

Elementary Circuits

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

Voltage Divider Circuits

Textbook

Let’s analyze a simple series circuit and determine the voltage…

IGFET Amplifiers

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

The 555 IC

Textbook

The 555 integrated circuit is the most popular chip ever manufactured.…

Power Quality Measurement

Textbook

It used to be with large AC power systems that “power…

Electron Tubes

Textbook

Cathode:   This is the electrode that is heated and emits the…

Introduction to Conductance and Conductors

Textbook

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