A voltage divider is one of the easier-to-understand pieces of circuity in use in modern electronics. They divide voltage, and are crucial to most modern electronics. This video will show you how they work and how to build one yourself for your circuits.
This two-part video describes voltage, the potential difference or "pressure" that pushes electric charges through conductors. After watching this, you'll know everything there is to know about voltage and current.
This is a recording of a class lecture on Voltage Sources. The first part describes how mechanical friction can generate voltages.
Measuring the voltage of a piece of electrical equipment is a somewhat dangerous and complicated but necessary process if you want to do any sort of DIY electrical projects. This video will show you how to use a multi-meter to read the DC voltage of a power drill battery, with an emphasis on what you need to do to complete this process safely.
If you own or have access to an auto-ranging or manual-ranging multimeter you can measure several different aspects of circuits, resistors, and the like. For example, you can determine the resistance, voltage, continuity, and current with the multimeter to help you determine the precision of a resistor. This guide will help you learn how to use a multimeter to perform these tasks.
An amplifier is something that amplified the voltage on a circuit. The most basic kind is an operational amplifier, and this video will show you how these work and how to use them in your electronics. As an example you'll learn how to make a microphone circuit for spying on people or listening to your heartbeat.
This handy electronics tutorial will teach you all about one of the most important electronic components: the linear voltage regulator. You'll learn how they work, how to wire them, where to find them, and how to make an awesome 5V USB charger to use your newfound skills.
Even basic electronics are pretty damn complicated. This video is near the end of Scotty's amazing series of electronics tutorials, and will teach you about adding a diode and a capacitor to a circuit, choosing a power supply, voltage states, and polarity.
This is a guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure voltage using an electronic labs kit. This video guides the student through the proper techniques for measuring voltage with a multimeter.
Vampire voltage may sound like the next Sci-Fi channel original movie, but it's not. It's something that lives in your very home and can be affecting your energy bill even as you read this. Basically vampire voltage is an appliance that is using electricty although it's not being used. Computers, microwaves, blu-ray disk players, etc are examples of vampires.
Tim Carter demonstrates how to fasten low voltage wire. You can work with residential low voltage wiring easily and safely after watching these tips.
In this video you will learn how to make a high voltage, high frequency power supply in just five minutes, and for less than twenty bucks. All you'll need is a compact fluorescent light (CFL) and a flyback transformer to make that alternative energy source of yours.
Nicad batteries often die in such a way that they won't take a charge and have zero voltage. This usually means they're shorted out by crystal dendrite growth. Here's a method of bringing them back to life by zapping those shorted crystal dendrites away with too much current and/or voltage. We'll use a welder as a power source. You could also use a car battery, a DC powersupply, or almost anything with some voltage. Charged-up capacitors are popular for this because you can get a very fast pu...
Materials needed: Altoid mint tin, 9 volt batter and connector, switch, 7812 voltage regulator, 12 volt computer fan, carbon filter and 2 pieces of screen. Wire the battery connectors. Solder all of the following: Negative connector to the switch, wire to the switch, ground wire of the voltage regulator to the middle wire, output for the 7812 to the fan, positive lead on the 9 volt connector to the input on the 7812 and the negative from the 7812 to the negative on the fan. Test. Put all the ...
The best way to make sure you have the best connections on high voltage-lines is to clean them. Cleaning high-voltage wires with cleaning solvents is the best way to get the job done for a better flow of electricity. This video, produced by Polywater, trains electricians on the proper high-voltage cable cleaning procedures during splicing and termination. Methods are shown to remove different types of shields and compounds from insulation. The "Do's and Don'ts" of abrasion, solvent spraying, ...
In this video, we learn how to use high voltages using the Wimhurst machine. First, you must have a spinning wheel, double ended brushes, collecting combs, leyden jars, adjustable electrodes, and small metal plates. Once you connect all these together, you will notice the brushes on either side are perpendicular to each other and the wheel spin in opposite directions. Spin the wheel and then listen to the sound it makes. The plate will then charge with different electrons and create positive ...
The first video introduces the basic electrical quantities of charge, current, voltage, and resistance. The concept of quantities and units is explained. The units of Coulombs, Volts, Amperes, and Ohms are described. The three basic formulas of Ohm's Law (E=IR, I=E/R and R=E/I) are also introduced.
This video teaches the basics of Ohm's law, which is an important equation in electrical engineering. The three variables which are used in this equation are V, which stands for voltage, I for current, and R for resistance. The equation for the law itself is I=V/R. This law defines the relationship between these three very important electrical properties. The host of the video further explains what voltage, current, and resistance are and how they work in relation to an electrical current. Gi...
This tutorial shows you how to set up the high voltage wiring for your RC kit. Although this is not a basic step for putting together your RC vehicle, it can be used to help make things easier. Be careful though, this can mess up your ability to use a remote control. So pay attention and enjoy!
Here is a technical tutorial from a technical communication class. An oscilloscope is for viewing oscillations, like electrical voltage and current, with cathode-ray tube display. See all about it in this great introduction to the device. Simply, this video tutorial will show you how to use an oscilloscope.
While breadboarding may seem like some odd combination of snowboarding and consuming the fluffy pastry at the same time, it's actually just the technical term for using a construction base to build a prototype electric circuit. Breadboards are solderless so they're great for circuit design and are reusable.
In this clip, you'll learn how to recreate the iconic high-voltage hazard sign as your Call of Duty: Black Ops playercard emblem. Learn how to create a electrocution risk symbol in the Black Ops Emblem Editor!
If you own a VW Beetle Bug, listen and watch. In this tutorial, you'll find out about everything you need to know about the car's voltage. Whether certain myths are true and how to convert a Beetle that has only 6 volts, into one that has 12. So pay attention, take notes, and good luck. Oh and be careful when dealing with voltage. Enjoy!
This is a great video presentation of how Sodium Potassium Pump can maintain a voltage gradient across a cell. It also discusses various things like the differences between positive and negative charges and positive and less positive charges etc. The video tries to explain a lot of things happen within a cell when you fluctuate the voltage of sodium as well as positive and negative ions within a cell. You must watch it yourself to see the changes happen within a cell when you make some changes.
Sometimes it's more than just inconvenient when your electronics lose power. Sometimes, losing power could be dangerous. Never worry about a dead cell phone again! Charge your portable electronics by harnessing the power of the sun.
For this project, I decided to rip apart a microwave I found in my neighbor's garbage can to see what was inside. With permission, of course! True story!
If you suspect that there may be something wrong with the fuel pump on your Saturn car, you should make sure you have proper voltage in the connector in your trunk. If you do, the next step is to check the ground.
With a voltmeter, you can safely check the AC and DC voltage levels, measure resistance and even measure amperage or give circuit readings. What this means is that you can use this to diagnose problems that some of your household appliances might be having.
In this video tutorial, you'll learn how to create a very weird effect using a thin layer of fog made with warm water and dry ice. As the demonstrator moves his hands over the fog, he is able to scribble eerie lines through it. Even if you don't plan to try this yourself, the video is definitely worth a look.
Hack your remote control so you only need one battery to run it! All you need is one paper clip to let you complete the circuit between the battery and the hardware on your remote control. It'll run at a lower voltage, so you'll have to be closer to the TV, but it will still work!
Here's a helpful house and apartment video tip to help you succeed in your home. Watch this tutorial to learn how to change your household lightbulbs.
This music production software tutorial demonstrates the use of an Audio Delay to create an effective CV delay, with some tweaking in Reason. CV delays are useful for instrument design and combinator construction. Learn how to delay control voltage outputs in this Reason video.
If you're an electrical engineer, you needn't worry about this educational video, but if you aren't...
The most annoying thing about Christmas lights is when one bulb blows, the whole string stops working. There's no easy way to tell which one is out when it's a huge strand, so it can take forever to fix.
It's not just for playing video games! Strap a Kinect to a Roomba and wire it together with an embedded wireless-N computer, a range finder, voltage distribution board and an external Li-Poly battery. And voila, you have your own custom made robot!
In this clip, you will learn how to create a simple constant current source so that all of your appliances are always running on the same current. This clip will explain exactly what this means and why you need to use it as well as how to set it up. Using the LM317LZ 100ma adjustible voltage regulator and one resistor, you can make a constant current source. With the LM317 1.5 amp version, you can make one with higher currents.
Learn how to use a multimeter to check for proper ground with help from this quick video. Also shown, is how to use a Fluke probe to pierce wires to test voltage. You can uses these practices when installing car alarms, fog lights, car stereo, and accessories.
Using the instructions on the MAKE blog (04/2008) We made this portable fume extractor for soldering. Works great at close proximity (2 inches). Note: We didn't screw down the voltage regulator, just stuffed it in the side. This will keep the fumes from seeping into your lungs by trapping them with an Altoids tin.
By circuit bending low voltage electronic devices, you can transform your old unused toys into musical devices or to create visual manipulations. Take a look at this instructional video and learn how to bend an old classic Nintendo. In this tutorial, you'll learn how to circuit bend the NES in such a way that you'll be able to produce cool distortions while in gameplay. Remember to exercise caution when circuit bending.
Here are some concepts that Stanley Meyers had related to his patents regarding the Resonant Charging Choke, which is basically Telsa's BiFiler Coil Design, which basically is how to connect the WFC to the bifilar coil for maximum efficiency and if you have higher resistance and impedance than the WFC you can inhibit amp flow and allow voltage to go to the maximum.
