Categories

Time-Delay Electromechanical Relays

Worksheets - Relays

What does the normal status of an electrical switch refer to?…

TTL Logic Gates

Worksheets - Relays

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

Programmable Logic Controllers (PLC)

Textbook

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

Contact “Normal” State and Make/Break Sequence

Textbook

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

CMOS Logic Gates

Worksheets - Relays

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

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

Reluctance Motor

Textbook

The variable reluctance motor is based on the principle that an…

Heat Sink Calculator

Tools

This calculator helps determine the maximum temperature a device can withstand

DC Motor Theory

Worksheets - Relays

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

Voltmeter Impact on Measured Circuit

Textbook

Every meter impacts the circuit it is measuring to some extent, just…

The Junction Field-effect Transistor (JFET) as a Switch

Textbook

Like its bipolar cousin, the field-effect transistor may be used as an…

Insulated Gate Bipolar Transistors

Worksheets - Relays

What is an Insulated Gate Bipolar Transistor (IGBT), and what…

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

Switch Types

Textbook

Though it may seem strange to cover the elementary topic of electrical…

Performance-Based Assessments for Digital Circuit Competencies

Worksheets - Relays

(Template)

Flyback Switch Mode Regulator Calculator

Tools

A calculator for computing several parameters needed in the design of a flyback switch mode regulator

Commutating Diode

Textbook

PARTS AND MATERIALS 6 volt battery Power transformer, 120VAC…

High Voltage Ohmmeters

Textbook

Most ohmmeters of the design shown in the previous section utilize a…

Programmable Logic Controllers (PLC)

Textbook

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

Light-Pulse Switch

Worksheets - Relays

It is fairly important to use large value resistors (10 MΩ works…

Contact “Normal” State and Make/Break Sequence

Textbook

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

Inductive Reactance

Worksheets - Relays

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

CMOS Logic Gates

Worksheets - Relays

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

Synchronous Condenser

Textbook

Synchronous motors load the power line with a leading power factor.…

CMOS 555 Long Duration Flyback LED Flasher

Textbook

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

Boolean Algebra

Worksheets - Relays

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

Branch Current Method

Textbook

The first and most straightforward network analysis technique is…

An Analogy for Ohm’s Law

Textbook

Ohm’s Law also makes intuitive sense if you apply it to the…

Wire Microstrip Impedance Calculator

Tools

A helpful tool for calculating the impedance of a wire microstrip.

Multi-Stage Transistor Amplifiers

Worksheets - Relays

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

The Antiderivative (Indefinite Integral)

Textbook

Notice something important here: taking the derivative of f(x) may…

Junction Diodes

Textbook

There was some historic crude, but usable were some historic crude,…

Factors Affecting Capacitance

Textbook

There are three basic factors of capacitor construction determining…

Strain Gauges

Textbook

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

Lock-out / Tag-out

Worksheets - Relays

In this motor control circuit, how would you ensure that there is no…

Venn Diagrams and Sets

Textbook

Mathematicians use Venn diagrams to show the logical relationships of…

Inductor Sizing Equation

Textbook

The Inductance Formula Wheeler’s formulas for inductance of air core…

7-segment Display

Textbook

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

Inductors and Calculus

Textbook

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

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

Definite Integrals and the Fundamental Theorem of Calculus

Textbook

Mixed-Frequency Signals

Worksheets - Relays

What is a harmonic frequency? If an oscillator circuit outputs a…

Thermoelectricity

Textbook

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

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

Single-ended and Differential Amplifiers

Textbook

For ease of drawing complex circuit diagrams, electronic amplifiers…