Categories

Three-phase Y and Delta Configurations

Textbook

Three-phase Wye(Y) Connection Initially, we explored the idea of…

Conductors and Insulators

Worksheets - Connectors

Given two lengths of metal wire, which one will have the least…

Wires and Connections

Textbook

Older electrical schematics showed connecting wires crossing, while…

Non-right Triangle Trigonometry

Textbook

The Law of Sines (for any triangle) The Law of Cosines (for any…

Electrical Signal Types

Textbook

With BogusBus, our signals were very simple and straightforward: each…

Arithmetic Properties

Textbook

The associative property In addition and multiplication, terms may be…

A 50-Ohm Cable?

Textbook

Early in my explorations of electricity, I came across a length of…

Potentiometer as a Rheostat

Textbook

Learning Objectives Rheostat use Wiring a potentiometer as a rheostat…

Rules for Derivatives

Textbook

Constant rule Rule of sums Rule of differences Product rule Quotient…

Copper Wire Ampacity Table

Textbook

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

Conductor Size

Textbook

It should be common-sense knowledge that liquids flow through…

Permissive and Interlock Circuits

Textbook

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

Rules for Antiderivatives

Textbook

Constant Rule Rule of Sums Rule of Differences

Electromechanical Relay Logic

Worksheets - Connectors

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

Wiring Color Codes

Textbook

Wiring for AC and DC power distribution branch circuits are color…

Analog and Digital Signals

Textbook

Instrumentation is a field of study and work centering on measurement…

Electrical Isolation

Textbook

SPICE analysis of Electrical Isolation Aside from the ability to…

Switch Contact Design

Textbook

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

Common Antiderivatives

Textbook

Copper Wire Gauge Table

Textbook

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

Arc Flash and Arc Blast

Worksheets - Connectors

Electromechanical relays used to start and stop high-power electric…

Logic Signal Voltage Levels

Textbook

Logic gate circuits are designed to input and output only two types of…

Overcurrent Protection

Worksheets - Connectors

What hazards might be posed by a circuit with excessive current going…

Simple Vector Addition

Textbook

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

AC Motor Control Circuits

Worksheets - Connectors

Perhaps the most challenging aspect of interpreting ladder diagrams,…

True, Reactive, and Apparent Power

Textbook

Reactive Power We know that reactive loads such as inductors and…

Permissive and Interlock Circuits

Textbook

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

4-wire Resistance Measurement

Textbook

PARTS AND MATERIALS 6-volt battery Electromagnet made from experiment…

Parallel Batteries

Textbook

PARTS AND MATERIALS Four 6-volt batteries 12-volt light bulb, 25 or…

Wire Loop Inductance Calculator

Tools

This calculator helps you compute the inductance of a wire loop.

Voltage and Current Calculations

Textbook

There’s a sure way to calculate any of the values in a reactive…

Stepper Motor Calculator

Tools

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

Larger 5 & 6-variable Karnaugh Maps

Textbook

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

Electromechanical Relay Logic

Worksheets - Connectors

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

Magnetic Fields and Inductance

Textbook

Whenever electrons flow through a conductor, a magnetic field will…

Microstrip Patch Antenna Calculator

Tools

This tool calculates the dimensions of the microstrip patch antenna given the desired operating frequency.

DC Motor Theory

Worksheets - Connectors

If the ends of a wire loop are attached to two half-circular metal…

Induction Motor

Textbook

PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF (or…

Electrical Transients

Textbook

This chapter explores the response of capacitors and inductors to…

What is a Series-Parallel Circuit?

Textbook

With simple series circuits, all components are connected end-to-end…

Inductors and Calculus

Textbook

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

CMOS 555 Long Duration Red LED Flasher

Textbook

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

Series Batteries

Textbook

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

Coefficients of Specific Resistance

Textbook

Specific resistance at 20o C: Material Element/Alloy (ohm-cmil/ft)…

Optothyristors

Textbook

Like bipolar transistors, SCRs and TRIACs are also manufactured as…

Parallel Circuit Rules

Textbook

Components in a parallel circuit share the same voltage: Etotal = E1…

Digital Logic Signals

Worksheets - Connectors

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

Modern Nonmechanical Memory

Textbook

Now we can proceed to studying specific types of digital storage…

Sensitive Voltage Detector

Textbook

PARTS AND MATERIALS High-quality “closed-cup” audio headphones…

Power Sources

Textbook

Basic Electricity Worksheet

Worksheets - Connectors

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

Digital Signals and Gates

Textbook

While the binary numeration system is an interesting mathematical…

Contributors (10)

Textbook

Contributors to this chapter are listed in chronological order of…

Specific Resistance of Conductors

Worksheets - Connectors

Given two lengths of metal wire, which one will have the least…

Emergency Response

Textbook

Despite lock-out/tag-out procedures and multiple repetitions of…

Basic Logic Gates

Worksheets - Connectors

Identify the type of logic gate shown in this schematic diagram, and…

Switches, Electrically Actuated (Relays)

Textbook

Design Project: Stepper Motor Driver

Worksheets - Connectors

At first it may seem pointless to have the four buffer gates following…

AC Network Analysis

Worksheets - Connectors

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

Finite-length Transmission Lines

Textbook

A transmission line of infinite length is an interesting abstraction,…