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Inductors

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12	12	The schematic (logical) symbol for an inductor is: [[Image(inductor-symbol.jpg, 100px, margin=10)]]
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14		The~~se are the~~ key things about inductors that will help you understand how they are used in circuits:
	14	The key things about inductors that will help you understand how they are used in circuits:
15	15	* When you connect a power source to one side of an inductor, the voltage immediately appears at the output. However when you start to draw current (electrons) through the inductor, a magnetic field builds around the inductor before electrons start flowing through to the output. If current continues to flow, the magnetic field will eventually saturate and electrons will then flow unimpeded through the inductor (i.e. at that point it looks and behaves just like a wire with no inductance). During the time the magnetic field is building, the inductor effectively impedes the increasing flow of current.
16	16	* When the flow of current through an inductor decreases, the magnetic field collapses into the inductor, increasing the force on the electrons (raising the voltage and forcing electrons to flow) until the field has collapsed at which point the inductor again looks like a wire. During the time the magnetic field is collapsing, the inductor effectively impedes the decreasing flow of current.