The application and main parameters of the air core coil in the induction coil are introduced. The air core coil is mainly used for induction reception. Adjust magnetic cards, magnetic heads, high current coils, low-voltage electrical appliances, industrial controls, household appliances, car electronics, SMT mounting, mobile phone wireless transceivers, electronic navigators, power regulators, amplifiers, suppliers, filters and other electronic products or electronic accessories. It can be seen that air core coils are widely used. All of them use the physical characteristics of air core coil such as energy storage, DC resistance AC, magnetoelectricity (electro magnetism) for specific application.
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 effect of the inductance coil on the AC current impedance is called inductive reactance XL The unit is Ohm. The self induced electromotive force in the air core coil always has impedance impedance resistance with the current change in the coil. The air core coil has resistance to AC current. The magnitude of the resistance is called inductive reactance Xi. The unit is Ohm. Its relationship with inductance I and AC frequency f is xi = 2qfi The quality factor Q is a physical quantity Q indicating the quality of the coil, which is the ratio of the inductance XL and its equivalent resistance, i.e; Q = the higher the Q value of the XLR coil, the smaller the loss of the loop. The Q value of the coil and the loss caused by the dielectric loss of the DC resistance skeleton of the conductor, the shield or the iron core.
