Latest Optoelectronics Education

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Digital Display Circuits

Worksheets - Optoelectronics

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

Convert MCD to Lumens

Tools

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

Special-purpose Diodes

Textbook

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

Digital Lab - Digital Combination Lock

Textbook

In this hands-on electronics experiment, build a digital combination lock with LED output indicators and learn about XOR gate functionality and how to implement NOR logic functionality using diodes.

555 Lab - Blue LED Flasher With Voltage Doubler

Textbook

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.

Optoelectronic Devices

Worksheets - Optoelectronics

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

Design Project: LED Stroboscope

Worksheets - Optoelectronics

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

Digital Lab - 7-segment LED Display

Textbook

In this hands-on electronics experiment, you will control a 7-segment binary-coded decimal (BCD) display and learn about active-low and active-high logic inputs.

Display Tubes

Textbook

In addition to performing tasks of amplification and switching, tubes…

555 Lab - Red LED Flasher

Textbook

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

555 Lab - LED Flasher with Inductive Flyback

Textbook

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.

Si Lab - Bipolar Transistor as a Switch

Textbook

In this hands-on semiconductor electronics experiment, use a bipolar junction transistor (BJT) to switch an LED and learn about the current their amplification.

Series LED Resistor Calculator

Tools

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.

Si Lab - Light Sensor (LED Photodetector)

Textbook

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.

Digital Lab - 10-bit Flashing LED Sequencer

Textbook

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.

Karnaugh Mapping

Worksheets - Optoelectronics

Identify each of these logic gates by name, and complete their…

555 Lab - Advanced Red LED Flasher

Textbook

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.

Programmable Logic Controllers (PLC)

Textbook

Before the advent of solid-state logic circuits, logical control…

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Series Resistor-Capacitor Circuits

Textbook

In the last section, we learned what would happen in simple…

Design Project: Telegraph System

Worksheets - Optoelectronics

What voltage will you choose to use for each of the station batteries?

Resistor Color Code Calculator and Chart—4 Band, 5 Band, or 6 Band Resistors

Tools

A handy all-in-one tool for reading resistor color code values for a 4 band resistor, 5 band resistor, or 6 band resistor.

Permissive and Interlock Circuits

Textbook

A practical application of switch and relay logic is in control…

Strain Gauges

Textbook

If a strip of conductive metal is stretched, it will become skinnier…

The Cascode Amplifier

Textbook

While the C-B (common-base) amplifier is known for wider bandwidth…

Digital Lab - 7-segment LED Display

Textbook

In this hands-on electronics experiment, you will control a 7-segment binary-coded decimal (BCD) display and learn about active-low and active-high logic inputs.

Display Tubes

Textbook

In addition to performing tasks of amplification and switching, tubes…

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

Encoders and Decoders

Worksheets - Optoelectronics

What does it mean, in general terms, to encode something? Conversely,…

Digital Memory Terms and Concepts

Textbook

When we store information in some kind of circuit or device, we not…

AC Voltmeters and Ammeters

Textbook

AC electromechanical meter movements come in two basic arrangements:…

Inductor Voltage and Current Relationship

Textbook

Inductors do not have a stable “resistance” as conductors…

Introduction to Junction Field-effect Transistors (JFET)

Textbook

A transistor is a semiconductor device that controls current with the…

Capacitor Types

Textbook

A capacitor is a passive two-terminal electronic component that…

Characteristic Impedance

Worksheets - Optoelectronics

Note the “50 ohm” rating printed on the jacket of the cable. What…

Microstrip Max Current Calculator

Tools

A calculator for solving the maximum current a microstrip can handle.

CMOS Logic Gates

Worksheets - Optoelectronics

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

Ohm’s Law

Worksheets - Optoelectronics

For a given amount of water pressure, which will flow a greater rate…

The Common-gate Amplifier (JFET)

Textbook

RELATED WORKSHEETS: JFET Amplifiers Worksheet

Oscillator Circuits

Textbook

Phase shift oscillator. R1C1, R2C2, and R3C3 each provide 60° of…

Voltage, Current, and Resistance

Worksheets - Optoelectronics

Voltage is commonly defined as “electrical pressure.” The unit of…

Simulating JFET Circuits Using LTspice

Textbook

Learn about junction field effect transistors (JFETs), their equations, and how to model and simulate JFETs in LTspice.

Op-Amp Data

Textbook

Parametric data for all semiconductor op-amp models except the CA3130…

Digital Lab - S-R Latch Using NOR Gates

Textbook

In this hands-on electronics experiment, build an S-R latch using two NOR gates and learn how this type of digital memory operates, including invalid states, race conditions, and the effects of output loading.

DIY EE Lab - Introduction to Electronics Projects

Textbook

To learn about electronics, you must eventually engage in hands-on experimentation. Knowledge gleaned from books alone has limited use in scientific endeavors. Troubleshooting a circuit can be as important as the knowledge gained from a properly functioning experiment.

Simple AC Circuit Calculations

Textbook

Over the course of the next few chapters, you will learn that AC…

Measurements of AC Magnitude

Textbook

So far we know that AC voltage alternates in polarity and AC current…

Early Tube History

Textbook

Thomas Edison, that prolific American inventor, is often credited with…

Series and Parallel Inductors

Textbook

When inductors are connected in series, the total inductance is the…

Inductance

Worksheets - Optoelectronics

∫f(x) dx Calculus alert! One of the fundamental principles of…

Binary Math Circuits

Worksheets - Optoelectronics

Add the following binary numbers:

Class B BJT Amplifiers

Worksheets - Optoelectronics

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

Principles of Radio

Textbook

One of the more fascinating applications of electricity is in the…

Static Electricity

Worksheets - Optoelectronics

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

AC Lab - Induction Motor

Textbook

In this hands-on AC electronics experiment, build a simple AC permanent capacitor split-phase induction motor and learn the principles of AC induction motor function.

Numeration Systems

Worksheets - Optoelectronics

Digital computers communicate with external devices through ports:…

Intro Lab - How to Use a Voltmeter to Measure Voltage

Textbook

In this hands-on introduction to electronics, you will experiment with a multimeter and learn how to measure voltage using the voltmeter function.

Octal and Hexadecimal to Decimal Conversion

Textbook

Although the prime intent of octal and hexadecimal numeration systems…

TTL Logic Gates

Worksheets - Optoelectronics

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