Inductance coil

Inductance coil is referred to as inductance, commonly known as coil. Inductance coil is a component that works on the principle of electromagnetic induction. When a current flows through a wire, it will generate a certain electromagnetic field around the wire, and the electromagnetic field wire itself will induce the wire within the range of the electromagnetic field.

An inductor is an electronic component with direction (phase division) but no polarity. The direction of the magnetic field generated around the inductor varies depending on the direction of the current flowing through the inductor.

Inductance coil has the characteristics of DC, AC, low frequency and high frequency. The electrical characteristics of inductor coil and capacitor are opposite, high frequency signal through the inductor coil, will encounter great resistance is difficult to pass; When low-frequency signals pass through it, the resistance presented is relatively small, so low-frequency signals can easily pass through it.

The resistance of the inductor coil to direct current is almost zero. The performance index of the inductor coil is mainly the size of the inductance and the self-induced electromotive force in the coil, which always compete with the current change in the coil. When the current through the inductor changes, the coil will generate a self-induced electromotive force to block the change in current.

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