I'm a student in high school in a basic physics class. My teacher assigned a report and presentation about electric transformers(because its not in our textbooks), but the information i get from websites is too complicated for me to understand.(ie wikipedia) Is there a website where i can get thorough info that is easy to understand?
Transformers involve some pretty neat physics and math, but to truely understand what's going on, you need to know a bunch of calculus and EM. Here's a few basic important concepts. When you run current through a wire, you create a magnetic field. So, when you run AC current (just means alternating. One instance it's moving forward, another its moving back), you could say that you create a time dependent magnetic field. Another concept, is when you have a time changing magnetic field, you can set up a coil of wire inside the field, and induce an AC voltage in the coil. So, if we set two coils close together, and run an AC signal through one, we'll get an AC signal in the other as well because of the time changing magnetic field. But, this site can tell you much more than I can. There's still going to be a bit of math, but the writers do a pretty good job of being understandable. I hope this helps
$20 at most big electronics retailers, within 500 watts larger transformers can be up to $100 to 2000 watts.
