Posted March 14, 2012 by Chris

“Basically, a card stripe contains a certain sequence of magnetic fields which the reader detects as you swipe the card through it. The basis of all the card-spoofing circuits is to make some kind of electromagnet, put it next to the read-head and manipulate the magnetic field in just the right way to mimic a card.”

Posted September 21, 2011 by Chris

“Flyback transformers are found in monitors, TVs or anything with a CRT, and are sometimes known as Line OutPut Transformers, or just LOPT. They are used for generating high voltage for the CRT, which is needed to create an electric field, which in turn accelerates electrons towards the screen, which finally excite phosphors and create the image you see.”

Posted August 30, 2011 by Chris

The theory of superconductivity and levitation is complex, but this article and small project give a shot at explaining the way that super- conductivity through electricity and magnetism can be used for our own needs and fun projects. This is all coming from Sherbrooke University in Canada.