Categories

Special-purpose Diodes

Textbook

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

CMOS 555 Long Duration Red LED Flasher

Textbook

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

Convert MCD to Lumens

Tools

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

Digital Display Circuits

Worksheets - Optoelectronics

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

Display Tubes

Textbook

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

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.

7-segment Display

Textbook

PARTS AND MATERIALS 4511 BCD-to-7seg latch/decoder/driver (Radio…

CMOS 555 Long Duration Blue LED Flasher

Textbook

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

Simple Combination Lock

Textbook

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

Transistor as a Switch

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN…

Programmable Logic Controllers (PLC)

Textbook

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

Pulsed-light Sensor

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN…

CMOS 555 Long Duration Minimum Parts Red LED Flasher

Textbook

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

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

CMOS 555 Long Duration Flyback LED Flasher

Textbook

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

Optoelectronic Devices

Worksheets - Optoelectronics

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

LED Sequencer

Textbook

PARTS AND MATERIALS 4017 decade counter/divider (Radio Shack catalog…

Design Project: LED Stroboscope

Worksheets - Optoelectronics

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

Karnaugh Mapping

Worksheets - Optoelectronics

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

Basic Voltmeter Use

Worksheets - Optoelectronics

What will this voltmeter register when connected to a battery as shown…

Winding Configurations

Textbook

Transformers with Multiple Secondaries Transformers are very versatile…

Rectifier Circuits

Worksheets - Optoelectronics

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

Special-output Gates

Textbook

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

Capacitor Types

Textbook

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

Design Project: Intercom System

Worksheets - Optoelectronics

Design a passive circuit that will create a "split” ( V/-V) power…

Asynchronous Flip-Flop Inputs

Textbook

The normal data inputs to a flip flop (D, S and R, or J and K) are…

Introduction to Solid-state Device Theory

Textbook

This chapter will cover the physics behind the operation of…

Stepper Motors

Textbook

Stepper Motor vs Servo Motor A stepper motor is a…

Simple Parallel Circuits

Textbook

On this page, we’ll outline the three principles you should…

Other Diode Technologies

Textbook

Varicap or varactor diodes A variable capacitance diode is known as a…

Enhancement-type IGFETs

Textbook

Frequency and Phase Measurement

Textbook

An important electrical quantity with no equivalent in DC circuits is…

Half-wave Rectifier

Textbook

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

What is a Meter?

Textbook

A meter is any device built to accurately detect and display an…

Simple Vector Addition

Textbook

Remember that vectors are mathematical objects just like numbers on a…

Capacitors

Worksheets - Optoelectronics

Identify some of the different types of capacitors, and their…

Circuit Wiring

Textbook

So far, we’ve been analyzing single-battery, single-resistor…

Pi-Match Impedance Matching Calculator

Tools

This calculator is designed to compute the parameters required to design a Pi-Match Impedance Circuit

Active Filters

Worksheets - Optoelectronics

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

Bipolar Junction Transistors in Active Mode

Worksheets - Optoelectronics

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

Ring Counters

Textbook

If the output of a shift register is fed back to the input. a ring…

NAND Gate S-R Flip-Flop

Textbook

PARTS AND MATERIALS 4011 quad NAND gate (Radio Shack catalog #…

Building Series-Parallel Resistor Circuits

Textbook

Once again, when building battery/resistor circuits, the student or…

Inductance, Reactance, and Admittance Calculator

Tools

This calculator gives the reactance and admittance of an inductor or the inductance given the reactance of an inductor

Zener Diodes

Worksheets - Optoelectronics

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

The R/2nR DAC: Binary-Weighted-Input Digital-to-Analog Converter

Textbook

What Is a R/2nR DAC Circuit? The R/2nR DAC circuit, otherwise known as…

Resistors

Worksheets - Optoelectronics

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

Impedance Matching With Transformers

Worksheets - Optoelectronics

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

Amplifier Circuits

Textbook

Note, Q3 and Q4 in the figure below are complementary, NPN and PNP…

Band Theory of Solids

Textbook

Quantum physics describes the states of electrons in an atom according…

L-Match Impedance Matching Circuits

Tools

This calculator is designed to compute for the parameters needed to design a L-Match Impedance Circuit

Electromagnetic Induction

Textbook

While Oersted’s surprising discovery of electromagnetism paved…

Simple Op-Amp

Textbook

PARTS AND MATERIALS Two 6-volt batteries Four NPN…

What is a Meter?

Textbook

A meter is any device built to accurately detect and display an…

DC Circuit Equations and Laws

Textbook

Power Equation of Ohm’s Law and Joule’s Law    …

Temperature Coefficients of Resistance Table

Textbook

Temperature coefficient (α) per degree C: Material Element/Alloy…

Building Simple Resistor Circuits

Textbook

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

VSWR / Return Loss Calculator

Tools

A calculator designed to compute the VSWR, reflection coefficient, return loss and matching loss in a transmission line

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.