Categories

Digital Logic Functions

Textbook

We can construct a simple logic functions for our hypothetical lamp…

Contact “Normal” State and Make/Break Sequence

Textbook

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

Programmable Logic Controllers (PLC)

Textbook

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

CMOS Logic Gates

Worksheets - Relays

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

TTL Logic Gates

Worksheets - Relays

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

Time-Delay Electromechanical Relays

Worksheets - Relays

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

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

Textbook

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

Step-up, Step-down, and Isolation Transformers

Worksheets - Relays

Calculate the voltage output by the secondary winding of a transformer…

Resonance

Worksheets - Relays

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

Circuit With a Switch

Textbook

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

Build a Transformer

Textbook

PARTS AND MATERIALS Steel flat bar, 4 pieces Miscellaneous bolts,…

Winding Configurations

Textbook

Transformers with Multiple Secondaries Transformers are very versatile…

Monostable Multivibrators

Textbook

We’ve already seen one example of a monostable multivibrator in…

Time Constant Calculations

Worksheets - Relays

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

Transformer—Power Supply

Textbook

PARTS AND MATERIALS Power transformer, 120VAC step-down to 12VAC,…

Voltmeter Impact on Measured Circuit

Textbook

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

Vacuum Tube Audio Amplifier

Textbook

PARTS AND MATERIALS One 12AX7 dual triode vacuum tube Two power…

Latch Circuits

Worksheets - Relays

What do you think this logic buffer gate will do, with the output…

CMOS Logic Gates

Worksheets - Relays

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

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

Simple Combination Lock

Textbook

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

Solid-state Relays

Textbook

Limitations of Electromechanical Relays As versatile as…

Relay Construction

Textbook

Electricity and Magnetism An electric current through a conductor will…

Single-phase Induction Motors

Textbook

A three-phase motor may be run from a single-phase power source.…

Fail-safe Design

Textbook

Logic circuits, whether comprised of electromechanical relays or…

Switch Contact Design

Textbook

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

Trigonometric Equivalencies

Textbook

A 50-Ohm Cable?

Textbook

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

Introduction to DC Circuits

Textbook

“DC” stands for Direct Current, which can refer to either…

Special-output Gates

Textbook

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

Basic Operational Amplifiers

Worksheets - Relays

Determine the output voltage polarity of this op-amp (with reference…

Insulator Breakdown Voltage

Textbook

The atoms in insulating materials have very tightly-bound electrons,…

Slope (integrating) ADC

Textbook

So far, we’ve only been able to escape the sheer volume of…

Thyristor Application Circuits

Worksheets - Relays

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

Programmable Logic Technology

Worksheets - Relays

Define the following acronyms as they apply to digital logic circuits:…

Voltage Follower

Textbook

PARTS AND MATERIALS One NPN transistor—models 2N2222 or 2N3403…

Band-pass Filters

Textbook

How to Create Band-pass Filter There are applications where a…

Edge-triggered Latches: Flip-Flops

Textbook

So far, we’ve studied both S-R and D latch circuits with enable…

Conductor Size

Textbook

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

Contributors (15)

Textbook

Contributors to this chapter are listed in chronological order of…

Design Project: Stepper Motor Driver

Worksheets - Relays

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

Series-parallel R, L, and C

Textbook

Now that we’ve seen how series and parallel AC circuit analysis…

Likely Failures in Proven Systems

Textbook

The following problems are arranged in order from most likely to least…

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

Metric Notation

Textbook

The metric system, besides being a collection of measurement units for…

Contributors (8)

Textbook

Contributors to this chapter are listed in chronological order of…