All About Circuits

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Thyristors

Thyristors

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


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Digital Display Circuits

Digital Display Circuits

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


Worksheets - LED Drivers

555 Lab - Advanced Red LED Flasher

555 Lab - Advanced Red LED Flasher

In this hands-on electronics experiment, build a red LED flasher with a transistor drive to control the current and learn how to use transistors to provide current gain and how to limit LED current.


Textbook

Parallel Resistor Calculator

Parallel Resistor Calculator

Calculate the equivalent resistance of up to six resistors in parallel with ease while learning how to calculate resistance in parallel and the parallel resistance formula.


Tools

Special-purpose Diodes

Special-purpose Diodes

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


Textbook

Rectifier Circuits

Rectifier Circuits

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


Worksheets - LED Drivers

AC phase

AC phase

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


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Switches

Switches

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


Worksheets - LED Drivers

Circuits and the Speed of Light

Circuits and the Speed of Light

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


Textbook

Parallel Resistor Calculator

Parallel Resistor Calculator

Calculate the equivalent resistance of up to six resistors in parallel with ease while learning how to calculate resistance in parallel and the parallel resistance formula.


Tools

DC Lab - Parallel Batteries

DC Lab - Parallel Batteries

In this hands-on electronics experiment, you will connect batteries in parallel to power a light and learn the relationship between the individual battery currents and the total system current.


Textbook

Digital Lab - 10-bit Flashing LED Sequencer

Digital Lab - 10-bit Flashing LED Sequencer

In this hands-on electronics experiment, build and test an automated circuit that sequentially flashes 10 LED, and learn about counters, frequency dividers, and switch debouncing.


Textbook

Digital Display Circuits

Digital Display Circuits

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


Worksheets - LED Drivers

555 Lab - LED Flasher with Inductive Flyback

555 Lab - LED Flasher with Inductive Flyback

In this hands-on electronics experiment, build a multiple LED flasher and learn how to use inductive flyback to generate a voltage pulse that is greater than the supply voltage.


Textbook

Design Project: LED Stroboscope

Design Project: LED Stroboscope

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


Worksheets - LED Drivers

Series LED Resistor Calculator

Series LED Resistor Calculator

This series LED resistance calculator is perfect for when you have a single LED or a number of the same color of LEDs in series and need to know which resistor you should use.


Tools

Static Electricity

Static Electricity

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


Worksheets - LED Drivers

555 Lab - Red LED Flasher

555 Lab - Red LED Flasher

In this hands-on electronics experiment, you will build a red LED flasher and learn a useful application of the versatile 555 timer IC.


Textbook

AC Motor Theory

AC Motor Theory

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


Worksheets - LED Drivers

555 Lab - Blue LED Flasher With Voltage Doubler

555 Lab - Blue LED Flasher With Voltage Doubler

In this hands-on electronics experiment, build a blue LED flasher using a 555 timer and learn the basic theory of a voltage doubler using a transistor switch and a capacitor.


Textbook

Special-purpose Diodes

Special-purpose Diodes

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


Textbook

Thyristor Application Circuits

Thyristor Application Circuits

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


Worksheets - LED Drivers

Light-Pulse Switch

Light-Pulse Switch

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


Worksheets - LED Drivers

Convert MCD to Lumens

Convert MCD to Lumens

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


Tools

Si Lab - Light Sensor (LED Photodetector)

Si Lab - Light Sensor (LED Photodetector)

In this hands-on semiconductor electronics experiment, use an LED as a light-sensitive photodetector and learn how to use a bipolar transistor in a common-emitter amplifier configuration.


Textbook

Peak, Average, and RMS Measurements

Peak, Average, and RMS Measurements

How is it possible to assign a fixed value of voltage or current (such…


Worksheets - LED Drivers

Numeration Systems

Numeration Systems

Digital computers communicate with external devices through ports:…


Worksheets - LED Drivers

Simple Series Resonance

Simple Series Resonance

A similar effect happens in series inductive/capacitive circuits. When…


Textbook

Critical Temperatures for Superconductors

Critical Temperatures for Superconductors

Critical temperatures given in Kelvins Material Element/Alloy Critical…


Textbook

RF Power Conversion Calculator

RF Power Conversion Calculator

A tool designed to convert RF power from watts to decibels and vice versa


Tools

AC Generator Theory

AC Generator Theory

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


Worksheets - LED Drivers

Stepper Motor Calculator

Stepper Motor Calculator

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


Tools

Bridge Circuits

Bridge Circuits

No text on electrical metering could be called complete without a…


Textbook

Trigonometric Equivalencies

Trigonometric Equivalencies


Textbook

Larger 5 & 6-variable Karnaugh Maps

Larger 5 & 6-variable Karnaugh Maps

Larger Karnaugh maps reduce larger logic designs. How large is large…


Textbook

AC Lab - Build a Transformer

AC Lab - Build a Transformer

In this hands-on AC electronics experiment, build a simple transformer and learn some important transformer fundamentals including voltage step-up and step-down.


Textbook

Electrical Conduction in Semiconductors

Electrical Conduction in Semiconductors

In any electrically conductive substance, what are charge carriers?…


Worksheets - LED Drivers

Protective Relay Circuits

Protective Relay Circuits

Protective relays are special power-sensing devices whose job it is to…


Worksheets - LED Drivers

Logarithms

Logarithms

Definition of a Logarithm     “log” denotes a…


Textbook

Parallel Circuit Rules

Parallel Circuit Rules

Voltage Components in a parallel circuit share the same voltage:…


Textbook

Multiplexers and Demultiplexers

Multiplexers and Demultiplexers

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


Worksheets - LED Drivers

Right Triangle Trigonometry

Right Triangle Trigonometry

  A right triangle is defined as having one angle precisely…


Textbook

Other Waveshapes

Other Waveshapes

As strange as it may seem, any repeating, non-sinusoidal waveform is…


Textbook

Relay Construction

Relay Construction

Electricity and Magnetism An electric current through a conductor will…


Textbook

Kirchhoff’s Current Law (KCL)

Kirchhoff’s Current Law (KCL)

What Is Kirchhoff’s Current Law? Kirchhoff’s Current Law,…


Textbook