CIRCUIT How-To Videos & Articles

Follow these circuit tutorials to learn all about circuit with WonderHowTo's collection of free how to articles, like Create Printed Circuit Boards, Calculate Total Resistance in Circuits, and Make a Voltage Divider Circuit.

You'll also find several great electronics tutorials in the Electronics category.

91 how-to articles
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How To Create Printed Circuit Boards

Create Printed Circuit Boards

So you have that circuit designed and ready. You did some computer aided simulations and the circuit is working great. Only one thing left ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 137

How To Calculate Total Resistance in Circuits

Calculate Total Resistance in Circuits

Resistance is everywhere. It is in all electrical circuits and components. Once you can calculate resistance you can understand circuits and ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 676

How To Make a Voltage Divider Circuit

Make a Voltage Divider Circuit

When making a portable circuit, such as a remote control, you may need to use a smaller voltage source than you can usually find off the ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 137

How To Wire a Simple 120v Electrical Circuit

Wire a Simple 120v Electrical Circuit

Hiring an electrician is usually the best way to go where 120 volt circuits are concerned, but if you are up to it, you might save money by ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 1,676

How To Swap a Hard Drive Controller Circuit

Swap a Hard Drive Controller Circuit

Your hard drive just stopped working. It never made any odd sounds, didn't screech, didn't crash. It just quit, and it has some priceless ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 461

How To Install a DVD Drive

Install a DVD Drive

It’s fairly easy to upgrade your computer and install a DVD drive whether it’s internal or external. The total cost should be under $100 ...more

B- Article
Written 3 months ago by WikiHow | Comments 0
Views 505

How To Install a Stove With 220 Line

Install a Stove With 220 Line

Provide power to a new outlet that will supply 220 (240) volts for an electric range. The steps below describe electrical service panels ...more

C Article
Written 4 months ago by WikiHow | Comments 1
Views 1,782

How To Install an Electrical Outlet from Scratch

Install an Electrical Outlet from Scratch

In order to install an electrical outlet and circuit from scratch you need a roll of 14-2 or 12-2 Romex cable (depending on how much load ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 1,026

How To Wire a 3 Way Light Switch

Wire a 3 Way Light Switch

A detailed explanation of one of the hardest electrical circuits to figure out. This is one of the easiest ways to do 3-way light switch ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 2,023

How To Charge a USB Device by Riding Your Bike

Charge a USB Device by Riding Your Bike

This article outlines the development of a continuous charging system which can create a mobile power source to extend the battery life of ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 460

How To Test a Water Heater Thermostat

Test a Water Heater Thermostat

Ran out of hot water? Here's how to troubleshoot (and replace if necessary) the controls and heating elements of most common residential 120 ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 789

How To Disassemble a Wireless Xbox 360 Controller for Painting

Disassemble a Wireless Xbox 360 Controller for Painting

This is a step by step tutorial on how to disassemble a wireless Xbox ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 392

How To Add Variable Voltage to Your ATX Based Bench Power Supply

Add Variable Voltage to Your ATX Based Bench Power Supply

If you've built a bench power supply using an old ATX computer power ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 166

How To Use a Multimeter

Use a Multimeter

A multimeter is an instrument use to check for AC or DC voltages, resistance or continuity of electrical components and small amounts of ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 663

How To Install a Light Fixture

Install a Light Fixture

Install a light fixture and switch(es) to control it. Select the location of the fixture for the area that requires (additional ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 666

How To Master Do It Yourself Electrical Safety

Master Do It Yourself Electrical Safety

Many of us DIYs perform carpentry, gardening, painting, and even plumbing. But when it comes to home wiring, fear keeps us from completing ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 331

How To Prevent a House Fire

Prevent a House Fire

House fires kill and injure thousands yearly, and cost many more their valued possessions and memories. Here are some steps you can take to ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 259

How To Arc Weld

Arc Weld

Shielded Metal Arc welding is the process of joining two metal pieces using a flux covered electrode which is melted in an electric arc and ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 1,753

How To Remove a Vented Hood Fan

Remove a Vented Hood Fan

Whether you call it an extractor hood, range hood, kitchen hood, cooking canopy, extractor fan, whatever...Its main purpose is to remove the ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 552

How To Fix a Water Heater

Fix a Water Heater

This article is brief and incomplete, but may be helpful. It relates particularly to electric storage tank water heaters. If your water ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 97

How To Run an 18V Ryobi Tool Using a Car Battery

Run an 18V Ryobi Tool Using a Car Battery

Special battery packs often fail. Wouldn't it be great if you could run your 18V device off a car battery instead? You'll of course lose ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 228

How To Replace the Ballast in a Fluorescent Lighting Fixture

Replace the Ballast in a Fluorescent Lighting Fixture

All fluorescent light fixtures consist of at least lamp(s), lamp ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 764

How To Convert a Computer ATX Power Supply to a Lab Power Supply

Convert a Computer ATX Power Supply to a Lab Power Supply

Computer power supplies cost around US$30,but lab power supplies can ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 2,382

How To Hook up Hydraulics

Hook up Hydraulics

Hydraulic systems use a liquid under pressure to perform work. Designing and building a hydraulic system requires some mechanical knowlege ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 183

How To Install Outdoor Electric Wiring

Install Outdoor Electric Wiring

Methods to get power from inside your home to another point outside (ie: pole mounted lantern), or other point that requires passing through ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 824

How To Make a Motion Detector

Make a Motion Detector

You’re sleeping or your back is turned as a friend is trying to sneak up and scare you. Well not anymore! Go to your local RadioShack and ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 1,094

How To Build Your Own Uninterruptible Power Supply

Build Your Own Uninterruptible Power Supply

In the event of extended blackout, you may have critical systems (such as computer or medical equipment) that must remain running no matter ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 1,170

How To Fix a Vacuum Cleaner

Fix a Vacuum Cleaner

Vacuum cleaners are one of those things you never think about, until yours goes on the blink. Fortunately, they're fairly simple machines ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 411

How To Make a Door Alarm

Make a Door Alarm

It can be very annoying when your siblings enter your bedroom without permission. If they keep on going inside, despite your threats and ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 620

How To Clean Refrigerator Coils

Clean Refrigerator Coils

Refrigerators have probably done more to positively impact the modern kitchen than any other appliance. Largely unappreciated until they ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 640

How To Maintain a Residential Natural Gas Furnace

Maintain a Residential Natural Gas Furnace

This is a brief and simple instruction manual on what a home owner can do to properly maintain their gas furnace and ventilation system ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 678

How To Run Your House With Solar Power

Run Your House With Solar Power

Unless you have US$20K or more to invest, running a typical household "off grid" is not possible; what many people take for granted as ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 580

How To Modify a Lacrosse Ws2300 for Frequent Wireless Updates

Modify a Lacrosse Ws2300 for Frequent Wireless Updates

This WIKI describes how to modify a Lacrosse WS2300 Weather station to ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 200

How To Wire a Light Switch From a Receptacle

Wire a Light Switch From a Receptacle

Wire a new switch to control an existing receptacle. A table lamp plugged into the switched outlet of a duplex receptacle will allow easy ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 560

How To Flush a Water Heater

Flush a Water Heater

Water heaters should be flushed at least once a year. This helps to control the buildup of mineral deposits. Your water heater will operate ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 365

How To Install a Hampton Bay Huntington III Ceiling Fan

Install a Hampton Bay Huntington III Ceiling Fan

The Huntington III ceiling fan uses a revolutionary "QuickConnect" ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 394

How To Install Speakers

Install Speakers

Have you ever wanted to install stereo speakers in your house, but found the job too difficult? There are a few things you may try to make ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 992

How To Make a Lemon Powered Clock

Make a Lemon Powered Clock

A pair of lemons and a trip to the hardware store is all you need to convert natural chemical energy into electrical power. A common lemon ...more

C Article
Written 5 months ago by WikiHow | Comments 0
Views 462

How To Create an Undergravel Filter for Your Fishtank

Create an Undergravel Filter for Your Fishtank

Undergravel filters, some love them, some hate them. But for less that ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 339

How To Fix a Car That Doesn't Start

Fix a Car That Doesn't Start

Repairing a car that wont start can be as simple as plugging in a wire, changing a fuse, or as complicated as replacing major engine ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 521

How To Upgrade the Harddrive in Your Archos Jukebox

Upgrade the Harddrive in Your Archos Jukebox

If you have an old Archos Jukebox and want to add more storage or fix an 'HD Error', this wiki will walk you through the steps necessary to ...more

C Article
Written 4 months ago by WikiHow | Comments 1
Views 449

How To Improve at Mario Kart DS

Improve at Mario Kart DS

This will help improve your racing ability in Mario Kart DS, and make you beat your opponents. Start unlocking characters & karts. Learn to ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 323

How To Jump Your Battery

Jump Your Battery

A battery has a negative terminal and positive terminal. Each terminal will be labeled with a symbol. A plus sign (+) indicates positive ...more

C Article
Written 3 months ago by WikiHow | Comments 1
Views 644

How To Maintain a Garbage Disposal

Maintain a Garbage Disposal

A garbage disposal , also known as waste disposal unit or garburator, is a device underneath a sink that shreds food waste so that it can ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 153

How To Recover from a Disaster

Recover from a Disaster

Recovering from a disaster is usually a gradual process. Safety is a primary issue, as are mental and physical well-being. If assistance is ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 49

How To Become a Fix It All Householder

Become a Fix It All Householder

Becoming a fix it all homeowner takes time, patience, and investment in tools and materials. You will become a jack-of-all-trades, not a ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 83

How To Develop a Risk Management Plan

Develop a Risk Management Plan

"Denial is a common tactic that substitutes deliberate ignorance for thoughtful planning."Charles Tremper Developing an effective Risk ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 116

How To Install a Ceiling Fan

Install a Ceiling Fan

If you want to install a ceiling fan but don't know how, this article will take you through the steps. Turn off the power to the light's ...more

C Article
Written 3 months ago by WikiHow | Comments 0
Views 867

How To Read Architect's Drawings

Read Architect's Drawings

The first requirement in constructing a building project is to understand architectural drawings (blueprints, or in this article, referred ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 923

How To Enjoy a Nascar Race

Enjoy a Nascar Race

So you're off to the racetrack with some friends, and you've never been to a NASCAR race before. Don't worry. It's totally OK. At one time ...more

C Article
Written 4 months ago by WikiHow | Comments 0
Views 376

CIRCUIT (91 how-to articles)

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Undulating LED Wave Sculpture

Beautiful LED sculpture made for the 2008 100% Design exhibition in Earls Court. Curious how it was made? Process images below the video. Previously, 24,000 LED Light-Up-My-Dress. LED Wand + RIFD ...

Robot Dance Off Gets Creepy

As November was coming to an end this year, the "6th Robo-One Gate in International Robot Exhibition 2009" dance competition took place. The contenders are just a little bit creepy, to say ...

2009's Most Amazing Scientific Images

Popsci has posted 2009's most amazing scientific images, and there's quite a few great ones in there. A few of our favorites below, click through for all 62. In short, Cow Farts. "Scientists ...

DARPA Develops Explosive Blocking Mega-Shield

DARPA has released footage of the Iron Curtain, a pretty impressive shield system that will protect armored vehicles from oncoming explosives. With $8 million in Army approved funds, DARPA will ...

Big Brother's Watching You (HowTo Un-Google Yourself)

Some think of Google as the ultimate Big Brother, and with good reason. If you use Google (and most of us do), Google potentially has your email history, your complete search history, your travel ...

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