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Inductance is the property by which a change in current in a conductor induces a voltage both in the conductor itself and nearby inductors, the latter being the basis upon which transformers operate. Discrete inductors are also available that have many applications including filtering and energy storage.
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Why does an inductor's inductance decrease with current?
One of the diagrams on the manufacturer's website shows a graph that describes the relationship between inductance and current. I assume this refers to DC current through the inductor. … Is this the reason the inductance drops? If so, if I had a signal with a DC current component of 400mA, then the AC component would see an inductance of 0.8uH? …