Categories

Electrical Connections

Worksheets - Connectors

What, exactly, is necessary to establish electrical continuity between…

Common Sources of Hazard

Textbook

Of course, there is a danger of electrical shock when directly…

Wire Types and Sizes

Worksheets - Connectors

Most electrical wire is covered in a rubber or plastic coating called…

Copper Wire Gauge Table

Textbook

Solid Cooper Wire Table Size Diameter (inches) Cross-sectional area…

Wiring Color Codes Infographic

Textbook

Wiring Color Codes Infographic. Released under the Creative Commons…

Switch Contact Design

Textbook

A switch can be constructed with any mechanism bringing two conductors…

Copper Wire Ampacity Table

Textbook

Ampacities of copper wire, in free air at 30o C: INSULATION TYPE…

Contactors

Textbook

All About Contactors When a relay is used to switch a large amount of…

Circuit With a Switch

Textbook

PARTS AND MATERIALS 6-volt battery Low-voltage incandescent lamp…

Circuit Wiring

Textbook

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

Conductors, Insulators, and Electron Flow

Textbook

The electrons of different types of atoms have different degrees of…

Electromechanical Relay Logic

Worksheets - Connectors

In ladder logic symbolism, an electromechanical relay coil is shown as…

Setting Up a Home Lab

Textbook

In order to build the circuits described in this volume, you will need…

Antiderivatives of Power Functions of e

Textbook

  Note: this is a very unique and useful property of e. As in…

Parallel Wire Inductance Calculator

Tools

This tool is designed to calculate the inductance of two parallel wires

Common Antiderivatives

Textbook

 

Permissive and Interlock Circuits

Textbook

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

Introduction to Conductance and Conductors

Textbook

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

AC Motor Control Circuits

Worksheets - Connectors

Perhaps the most challenging aspect of interpreting ladder diagrams,…

Contact “Normal” State and Make/Break Sequence

Textbook

Any kind of switch contact can be designed so that the contacts…

BJT Quirks

Textbook

An ideal transistor would show 0% distortion in amplifying a signal.…

Active Loads in Amplifier Circuits

Worksheets - Connectors

We know that the current in a series circuit may be calculated with…

Venn Diagrams and Sets

Textbook

Mathematicians use Venn diagrams to show the logical relationships of…

Simple Op-Amp

Textbook

PARTS AND MATERIALS Two 6-volt batteries Four NPN…

Microprocessor Programming

Textbook

The “vocabulary” of instructions which any particular…

Trigonometric Equivalencies

Textbook

Time-delay Relays

Textbook

What are Time-Delay Relays? Some relays are constructed with a kind of…

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

Textbook

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

Capacitors and Calculus

Textbook

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

Table (portrait view)

Textbook

  Periodic table of chemical elements.

Boolean Rules for Simplification

Textbook

Boolean algebra finds its most practical use in the simplification of…

Junction field-effect transistors (JFET)

Worksheets - Connectors

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

Arithmetic with Scientific Notation

Textbook

The benefits of scientific notation do not end with ease of writing…

Potato Battery

Textbook

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

Ohmmeter Design

Textbook

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

Basic Logic Gate Troubleshooting

Worksheets - Connectors

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

Millman’s Theorem Revisited

Textbook

You may have wondered where we got that strange equation for the…

Digital Logic Signals

Worksheets - Connectors

A rheostat (variable resistor) and a switch are both examples of…

Don’t Care Cells in the Karnaugh Map

Textbook

Up to this point we have considered logic reduction problems where…

Summer and Subtractor OpAmp Circuits

Worksheets - Connectors

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

Re-drawing Complex Schematics

Textbook

Typically, complex circuits are not arranged in nice, neat, clean…

Peak Voltage Calculator

Tools

The peak voltage calculator calculates peak voltage values from the peak-to-peak voltage, RMS voltage, or average voltage.

Voltage Divider Calculator

Tools

The voltage divider is a circuit used to create a voltage less than or equal to the input voltage.

Phase Rotation

Textbook

Three-Phase Alternator Let’s take the three-phase alternator…

More on AC “polarity”

Textbook

Complex numbers are useful for AC circuit analysis because they…

Converting Truth Tables into Boolean Expressions

Textbook

In designing digital circuits, the designer often begins with a truth…

Amplifiers

Textbook

Practical Benefit of Active Devices The practical benefit of active…

AC Network Analysis

Worksheets - Connectors

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

Thevenin’s, Norton’s, and Maximum Power Transfer Theorems

Worksheets - Connectors

Suppose a 12 volt lead-acid battery has an internal resistance of 20…

Batteries

Worksheets - Connectors

If I wanted to build a battery-powered electric drill, would it be…

Metric Prefix Conversions

Textbook

To express a quantity in a different metric prefix from how it was…

Building Series-Parallel Resistor Circuits

Textbook

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

The Silicon-Controlled Switch (SCS)

Textbook

If we take the equivalent circuit of an SCR and add another external…

Power Density Calculator

Tools

A tool designed to calculate the power density of an antenna

Waveguide Calculator (Circular)

Tools

This tool calculates the cutoff frequency of a circular waveguide

555 Hysteretic Oscillator

Textbook

PARTS AND MATERIALS One 9V Battery Battery Clip (Radio Shack catalog #…

Derivative of a Constant

Textbook

    (“c” being a constant)   RELATED…

Coax Inductance Calculator

Tools

A calculator for computing the inductance of a coaxial cable.

555 Audio Oscillator

Textbook

PARTS AND MATERIALS Two 6 volt batteries One capacitor, 0.1 µF,…

Kelvin (4-wire) Resistance Measurement

Textbook

Suppose we wished to measure the resistance of some component located…