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Weller electrical components are components that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer, but it has only one winding. An inductor has a certain inductance and only impedes changes in current. If the inductor is in a state with no current flowing through it, it will attempt to impede current flow when the circuit is closed; if the inductor is in a state with current flowing through it, it will attempt to maintain the current unchanged when the circuit is opened. Inductors are also known as chokes, reactors, and dynamic reactors. Weller electrical component characteristics The static characteristics of a sensor refer to the