1. Attention should be paid to factors such as humidity and dryness, environmental temperature, high-frequency or low-frequency environments, and whether inductance should exhibit inductive or impedance characteristics;

    2. Pay attention to wires (enameled wire, yarn wrapped or bare wire), commonly used enameled wire. To find the most suitable thread.

    3. When using a magnetic ring, refer to the magnetic ring section above to find the corresponding L value and the range of use of the corresponding material.

    4. The frequency characteristics of inductors generally exhibit inductive characteristics at low frequencies, which only store energy and filter high frequencies. But at high frequencies, its impedance characteristics are very obvious. There are phenomena such as energy consumption, heat generation, and reduced sensory effects. The high-frequency characteristics of different inductors are different. Below is an explanation of the inductance of ferrite materials:

    5. Ferrite materials are iron magnesium alloys or iron nickel alloys, which have high permeability and can minimize the capacitance generated between the coil windings of inductors under high-frequency and high resistance conditions. Ferrite materials are usually used at high frequencies because their main inductance characteristics at low frequencies result in minimal losses on the line. At high frequencies, they mainly exhibit a reactance characteristic ratio and vary with frequency. In practical applications, ferrite materials are used as high-frequency attenuators in RF circuits. In fact, ferrite is better equivalent to the parallel connection of resistance and inductance. At low frequencies, the resistance is short circuited by the inductance, and at high frequencies, the impedance of the inductance becomes quite high, so that all current passes through the resistance. Ferrite is a consumer device that converts high-frequency energy into thermal energy, which is determined by its resistance characteristics.

    6. The maximum current that the inductor design needs to withstand and the corresponding heating situation.