Anything in particular? Perhaps try clicking on the blue words you don't understand or looking them up on wikipedia.space scientist wrote:Please may you explain some of the information in simpler terms than what on the website.sean9keenan wrote:I do believe that the rules say you dont need to know much about inductors as they apply in circuits, but you do need to know about electromagnets. For instance you probably won't be asked to solve for the current through an inductor as a function of time. They can definitely ask you about the strength of the magnetic field or to draw the field lines.
I would recommend reading this: http://hyperphysics.phy-astr.gsu.edu/hb ... lemag.html It covers a lot of the material you'd need! You might also want to do some reading up about how toroids are used as cores of electromagnets
Try looking here : http://en.wikipedia.org/wiki/Ignition_coilJSGandora wrote:Could you tell me more about...please? You've caught my interest.sean9keenan wrote:...the principles behind the fast change in voltage inducing a current and creating a higher voltage across the spark plug...
This device works on the same general principle that a transformer does, which uses a changing current to induce a changing magnetic field, which then induces a changing current on the other side of the magnet. This works great for AC when the current is constantly changing but not for DC. However, when you first hook up a DC battery it does jump in current from, 0 to whatever it is, so it can infact "induce" or create a current on the other side of the transformer for a short period of time, which is all you need in order to make a spark
This is the idea of how a transformer works: http://en.wikipedia.org/wiki/Transforme ... principles