What Does 2r2 Mean On An Inductor?
2r2 is an inductor. It is a component 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 it only hinders the change of current.
An inductor is a component 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 it only hinders the change of current. If the inductor is in a state where no current flows through it, it will try to prevent the current from flowing through it when the circuit is connected; if the inductor is in a state where current flows through it, it will try to maintain the current when the circuit is disconnected. Inductors are also called chokes, reactors, and dynamic reactors.
Inductors mainly play the role of filtering, oscillation, delay, trapping, etc. in circuits, as well as shielding signals, filtering noise, stabilizing current, and suppressing electromagnetic interference. The most common role of inductors in circuits is to form an LC filter circuit together with capacitors. Capacitors have the characteristics of “blocking direct current and passing alternating current”, while inductors have the function of “passing direct current and blocking alternating current”.
If a DC current with more interference signals passes through the LC filter circuit, the AC interference signal will be consumed by the inductor as heat energy; when a relatively pure DC current passes through the inductor, the AC interference signal in it will also become magnetic induction and heat energy. The higher the frequency of the current, the easier it is for the inductor to generate impedance, which can suppress the interference signal with a higher frequency. The inductor has the characteristics of preventing AC from passing through and allowing DC to pass smoothly. The higher the frequency, the greater the coil impedance, so the main function of the inductor is to isolate and filter the AC signal or form a resonant circuit with capacitors, resistors, etc.
Main parameters The main parameters of the inductor include inductance, allowable deviation, quality factor, distributed capacitance, rated current, etc.
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