The inductor will have a blocking effect on the current passing through the inductor under the condition of alternating current. The higher the frequency of the inductor, the greater the blocking effect. This type of condition is called inductive reactance and is measured in ohms (Ω). Said.
Inductor characteristic 2: The current passing through the inductor will not change suddenly, the current will only increase or decrease slowly.
If the inductor is connected to a DC power supply, it will not cause inductive reactance, but the current passing through the inductor is zero at the moment the power is turned on, and then slowly expands until the magnetic saturation state, the blocking effect of the inductance fades, which is why the inductive reactance is caused For the sake of it.
Of course, the speed of this process is very fast, but you can use this feature to make all kinds of transformers, filters, choke coils, etc.
Classification of inductors:
Air core inductance: Generally, it is mainly used in high frequency circuits due to the low inductance; Hollow inductor. Solid core inductor: generally used for filtering; PFC filter inductor. Magnetic core inductance: used for voltage conversion and filtering in high frequency switching circuits; Magnetic core inductance. Transformers also belong to inductors; Power frequency transformer. Reactor: limit the instantaneous current and maximum current; Power reactor.
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