What is Coils: Definition and 203 Discussions

An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system that transforms the battery's voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. Some coils have an internal resistor, while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the car's 12-volt supply. The wire that goes from the ignition coil to the distributor and the high voltage wires that go from the distributor to each of the spark plugs are called spark plug wires or high tension leads. Originally, every ignition coil system required mechanical contact breaker points and a capacitor (condenser). More recent electronic ignition systems use a power transistor to provide pulses to the ignition coil. A modern passenger automobile may use one ignition coil for each engine cylinder (or pair of cylinders), eliminating fault-prone spark plug cables and a distributor to route the high voltage pulses.
Ignition systems are not required for diesel engines which rely on compression to ignite the fuel/air mixture.

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    Figuring Out Power Generated by Coil & Magnet | Any Thoughts Appreciated

    How do I figure out how much electricity would be generated by dropping a magnet down a coil of wire? What are the specific variables that would determine this? Is the number of coils more importants than the thickness of the wire and If it does generate electricity what's the best way to store...
  2. V

    Simulating weight through coils

    Hello everyone, I have a little practical question. I would like to create a weight of about 10kg-250kg. A software programm should be able to control the actual weight. Does anybody know a good physical way to do that? I thought of coils using Lorentz but I'm not quite shure. Any help is...
  3. D

    Sample Holder and coils for VSM

    Hi, I am building a vibrating sample magnetometer (VSM) and I have all the components except for the detector induction coils and sample holder. Any ideas where I could get the coils (for cheap)and what to make the sample holder out of? The induction coils have to have an axial length and...
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