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Audio, radio, sensors, digital electronics...

Audio, radio, sensors, digital electronics...

Identifying Electronic Components How-to identify and locate information for electronics components you can recycle from discarded gadgets. Brandon gives us example pictures and descriptions for most types of electronics components to help you stock up your home electronics lab. This is a must read for new electronics hobbyist. This article was submitted by Brandon Uhlig as part of the “Hobby parts for articles ” program. Brandon receives a Modern Device Company Bare Bones Arduino Kit for this fantastic article. Scrounging for parts is a great way for hobbyists to save some money. The focus will be on common reusable through-hole components hobbyists will be most likely to scrounge and re-use. Obviously, this is by no means a complete list, there are way to many different electronic components to put into a quick guide, but maybe this will give you some ideas to narrow down your search on an elusive component. Resistors are one of the most used components in a circuit. Potentiometers are variable resistors. Answers——————

Basic Electronics {*style:<b> Get a quick start by scrolling down to the introduction below this menu table. Basic Electronics - Course Table You are at the best, free online "Basic Electronics Course". Just read the brief blocks of text, view the videos, and check out some of the screened internet links. {*style:<b><b>Maybe you already know some basic electronics and want to test yourself to see exactly how much you do know. </b></b>*} {*style:<b>Explanation of AC and DC currents. </b>*} {*style:<b><b><b> P - I*V </b></b></b>*} {*style:<b>Watch the video . If you don't have a clue as to what electrical current and voltage are - read on. DC Theory Part 1 - DC Theory part 2 {*style:<b> </b>*} More book recommendations. There is another (and less expensive and practical) method of learning basic electronics. It is hands-on by doing simple projects. Get the MAKE: Electronics (Learn By Discovery) book below. You will also need some electronic parts available from Radio Shack or a good junk box. <b><b>Black </b></b> </b>*}

Lessons In Electric Circuits A free series of textbooks on the subjects of electricity and electronics Copyright (C) 2000-2015, Tony R. Kuphaldt These books and all related files are published under the terms and conditions of the Design Science License. A copy of the Design Science License is included at the end of each book volume. As an open and collaboratively developed text, this book is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Access individual volumes, I through VI: Edition numbers reflect major structural changes to a book volume such as the addition of new chapters, the substantial expansion of existing chapters, or a change in markup language (source code formatting). "Last revised" dates reflect non-trivial changes only. Click here for a detailed changelog of all books. Note to instructors: Interested in contributing to this project? News flashes (Reverse chronologic order) All volumes!

77 Brain Hacks to Learn Faster, Deeper, and Better Source: Online Education Database If someone granted you one wish, what do you imagine you would want out of life that you haven't gotten yet? For many people, it would be self-improvement and knowledge. New knowledge is the backbone of society's progress. Great thinkers such as Leonardo da Vinci, Thomas Edison, Benjamin Franklin, Albert Einstein, and others' quests for knowledge have led society to many of the marvels we enjoy today. Your quest for knowledge doesn't have to be as Earth-changing as Einstein's, but it can be an important part of your life, leading to a new job, better pay, a new hobby, or simply knowledge for knowledge's sake — whatever is important to you as an end goal. Life-changing knowledge does typically require advanced learning techniques. Here are 77 tips related to knowledge and learning to help you on your quest. 1. 2. 4. 5. Balance 6. 7. 8. 9. 10. 11. 12. 13. 14. Recall Techniques 15. 16. 17. Visual Aids 18. 19. 20. 21. 22. Verbal and Auditory Techniques 24. 25.

50 of the World’s Best Breakfasts from Around the World – Written by Victoria Philpott Not quite had your fill of breakfasts just yet? Check out our beautifully visual list of the 30 best breakfasts from around the world. Salivating. If you’ve got a tasty recipe for a breakfast you’ve made in a hostel kitchen, let us know. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. Phew, and that’s it! Follow me on Twitter @VickyFlipFlop and let me know what you think of them all… And if I’ve inspired you to travel the world to sample them, remember you can always book your cheap hotels with us at Thanks to everyone for the images from Flickr. Related posts

14 Coding Challenges to Help You Train Your Brain Programming is becoming an essential part of nearly every industry known to man, the way it helps to organize and maintain large systems is not possible to compare to anything else, and so more and more people begin their journey. You can learn to code both from interactive platforms and also from books – whichever you find most appropriate and easy to learn from. But, sometimes that’s not good enough, and we want to practice new things. Coding is a lot about creativity, your ability to come up with new and interesting ideas; but sometimes, due to a large amount of time spent tackling common problems, we forget about creativity. I’m not quite sure whether that is the reason coding challenges were made, but they certainly help with the part where you need to think of your own stuff to program. We could say that coding challenges are great for: 1. 2. HackerEarth provides a SaaS application to do an automated assessment of the technical and logical skills of candidates. 3. 4. 5. 6. 7. 9. 10.

How to Convert a Computer ATX Power Supply to a Lab Power Supply Edit Article Edited by Abizarl, Krystle C., Jack Herrick, Vertent and 42 others Computer power supplies cost around US$30, but lab power supplies can run you $100 or more! By converting the cheap (free) ATX power supplies that can be found in any discarded computer, you can get a phenomenal lab power supply with huge current outputs, short circuit protection, and reasonably tight voltage regulation on the 5V line. On most power supply units (PSUs), the other lines are unregulated. Ad Steps 1Look online or at your local computer store for an ATX computer power supply, or dismantle an old computer and remove the power supply from the case.Ad 2Unplug the power cable from the power supply and turn off the switch on the back (if there is one). 13 Plug the power cable into the back of the power supply and into an AC socket. Tips You can use your power supply 12V output as a car battery charger! Warnings If you suspect the power supply is damaged, do not use it!

Circuit Simulator Applet This java applet is an electronic circuit simulator. When the applet starts up you will see an animated schematic of a simple LRC circuit. The green color indicates positive voltage. The gray color indicates ground. To turn a switch on or off, just click on it. The "Circuits" menu contains a lot of sample circuits for you to try. If you don't have Java, get the Java plug-in. Directions. Index of Circuit Examples. More applets. Zip archive of this applet. The source. Version 1.6d, posted 4/9/14 Thanks to Edward Calver for 10 new components and other improvements.

5 Ways To Hack Your Brain Into Awesomeness Much of the brain is still mysterious to modern science, possibly because modern science itself is using brains to analyze it. There are probably secrets the brain simply doesn't want us to know. But by no means should that stop us from tinkering around in there, using somewhat questionable and possibly dangerous techniques to make our brains do what we want. We can't vouch for any of these, either their effectiveness or safety. #5. So you just picked up the night shift at your local McDonald's, you have class every morning at 8am and you have no idea how you're going to make it through the day without looking like a guy straight out of Dawn of the Dead, minus the blood... hopefully. "SLEEEEEEEEEP... uh... What if we told you there was a way to sleep for little more than two hours a day, and still feel more refreshed than taking a 12-hour siesta on a bed made entirely out of baby kitten fur? Holy Shit! We're pretty sure Kramer did this once on Seinfeld. How Does It Work? #4. #3. 1. 2. 3.

10 Useful Features Hidden in VLC, The Swiss Army Knife of Media Players There’s a good chance you already use the VLC media player. But VLC isn’t just a media player — it’s a complete Swiss Army Knife for digital videos and music, filled with useful and fun features you haven’t found yet. If you’re just using VLC to play back local media files, you’re only using a tiny fraction of VLC’s capabilities. There’s so much more you can do with VLC, whether you’re using it on Windows, Mac, or Linux. Convert Media Files VLC can convert media files between the formats it supports. To do this, click the Media menu and select Convert / Save. Stream Media Over the Network or Internet VLC can stream media across the Internet or on your local network. Of course, if you want to stream over the Internet, you’ll probably need to forward ports on your router. Record Your Desktop VLC can load your desktop as an input device. Remotely Control Playback From a Browser VLC has an integrated HTTP server you can enable. Watch YouTube Videos Play Internet Radio

antenna basics Antennas, to quote a friend, are one of life's eternal mysteries. "All I'm totally certain of is that any antenna is better than no antenna and the antenna should preferably erected as high and be as long as is possible or desirable". Here we will discuss the very basics of antennas including the the amazing terminated tilted folded dipole antenna. Each type of antenna will eventually have its own page. LAST MODIFIED: Sunday, 23-Jun-2013 12:55:29 PDT Please don't forget to bookmark this valuable electronics tutorial site! Authored by Ian C. Find us on Google+ What are the basics of antennas? Antennas, to quote a friend, are one of life's eternal mysteries. The basic antenna The most basic antenna is called "a quarter wave vertical", it is a quarter wavelength long and is a vertical radiator. This type of antenna relies upon an "artificial ground" of either drooping radials or a car body to act as ground. Antenna Polarisation Antenna Impedance The quarter wave vertical antenna The Yagi antenna

Radial Air core alternator Radial Air core alternator Fun! These are simple radial air core alternators that anyone with a drill and jig saw can build. Below are the basic parts for a single magnet 3 phase alternator... 2 plastic triangles sized to match the width of the magnet your using, 1 magnet, some small wooden dowl, 2 1/4" round steel stock ( cut bolts work well ), and some 1/4" bar stock that closely matches the thickness and width of the magnet your using. Also, some copper magnet wire for the coils. Below shows the basic frame assembled... Next you'll wind 3 coils that will fit around the frame... I used 100 turns of #28 wire as an experiment and it worked pretty well but you can adjust the amount of turns you want based on the voltage you need. Lay the 3 coils over the triangles and tape the coils together. Below is a picture of the completed unit... It easily lights LED's as well has the ability to charge nicad batteries... give it a spin ! Want more? Here is a shot of the parts you'll need to make...

Powerful Pictures Three sisters pose for photographs taken years apart. A Russian war veteran visits the tank that he fought in which has been preserved as a monument. A child gives a gift to riot police in Bucharest. Retired Police Chief Captain Ray Lewis is arrested at an Occupy Wall Street protest. A monk prays over the body of an elderly stranger who died suddenly while waiting on a train in China. A dog named Leao keeps watch by the the grave of his owner who was killed in a landslide in Rio de Janeiro. Tommie Smith and John Carlos raise their fists in a gesture of solidarity at the 1968 Olympic games. John F. Christians protect Muslims during the 2011 Cairo uprisings. A North Korean man waves his hand as a South Korean relative weeps, following a luncheon meeting during inter-Korean temporary family reunions at Mount Kumgang resort October 31, 2010. A dog is reunited with his master after the 2011 Japanese Tsunami. A mother comforts her son following the 2011 tornado in Concord, Alabama.