Categories

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.

CMOS 555 Long Duration Blue LED Flasher

Textbook

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

Programmable Logic Controllers (PLC)

Textbook

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

Transistor as a Switch

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN transistor—models…

Display Tubes

Textbook

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

7-segment Display

Textbook

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

LED Sequencer

Textbook

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

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 - LEDs

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

CMOS 555 Long Duration Red LED Flasher

Textbook

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

Design Project: LED Stroboscope

Worksheets - LEDs

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

Special-purpose Diodes

Textbook

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

Optoelectronic Devices

Worksheets - LEDs

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

CMOS 555 Long Duration Flyback 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 #…

CMOS 555 Long Duration Minimum Parts Red LED Flasher

Textbook

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

Karnaugh Mapping

Worksheets - LEDs

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

Resonance

Worksheets - LEDs

The Q factor of a series inductive circuit is given by the following…

Binary Count Sequence

Textbook

If we examine a four-bit binary count sequence from 0000 to 1111, a…

Thermoelectricity

Textbook

PARTS AND MATERIALS Length of bare (uninsulated) copper wire Length…

Wires and Connections

Textbook

Older electrical schematics showed connecting wires crossing, while…

Finite-state Machine

Textbook

Feedback is a fascinating engineering principle. It can turn a rather…

Superconducting Devices

Textbook

Superconducting devices, though not widely used, have some unique…

Millman’s Theorem

Textbook

In Millman’s Theorem, the circuit is re-drawn as a parallel…

The TRIAC

Textbook

SCRs are unidirectional (one-way) current devices, making them useful…

Half-Adder

Textbook

As a first example of useful combinational logic, let’s build a…

Kirchhoff’s Current Law (KCL)

Textbook

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

Waveguides

Textbook

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

Unit Conversion Calculator

Tools

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

Positive Feedback OpAmp Circuits

Worksheets - LEDs

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

AC Phase

Textbook

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

Wire Self Inductance Calculator

Tools

This calculator will help compute the inductance of a length of wire.

Series Batteries

Textbook

PARTS AND MATERIALS Two 6-volt batteries One 9-volt battery Actually,…

Scientific Notation

Textbook

In many disciplines of science and engineering, very large and very…

Electrical Noise and Interference

Worksheets - LEDs

Define what noise means, in the electrical sense of the word. How does…

Broadside Coupled Stripline Impedance Calculator

Tools

This calculator helps you compute the characteristic impedance of a broadside coupled stripline.

JFET Quirks

Textbook