Main parameters of air core coil
The inductance L is an inherent characteristic of the coil itself and is independent of the current. The inductance is generally indicated by a specific title. Inductive reactance: the magnitude of the resistance of the inductive coil to AC current is called inductive reactance XL, and the unit is Ohm. The self induced electromotive force in the air core coil is always impedance reactance to the current change in the coil. The air core coil has obstruction operation to AC current, and the magnitude of the obstruction effect is called ohm in the unit of inductive reactance Xi. The relationship between it and the inductance I and the AC frequency f is Xi = 2nfl, and the quality factor Q is a quantity indicating the quality of the coil, Q is the ratio of inductive reactance XL to its equivalent resistance, i.e., q = xlir. The higher the Q value of the coil, the smaller the loss of the loop. The Q value of the coil is related to the loss caused by the dielectric loss shield or iron core of the DC resistance skeleton of the wire, and the influence of high-frequency skin effect.