Custom best quality air core coil brand in China

The air core coil is composed of two parts, namely the hollow heel coil. The central idea of the hollow name is that there is nothing. A coil is a wire that is wound one by one, and the wires are insulated from each other. When the current flows through the wire, a magnetic field can be generated around the coil. The magnetic field intensity is proportional to the current intensity flowing through the coil and the number of turns of the coil.

1. What is an air core coil

In a certain magnetic field, the coil is used to cut the magnetic line of force, and the same magnetic field can be converted into electric energy. The principle of magnetoelectric conversion can be used to make relays, motors, motors, wireless devices, speakers and other devices. The conductor material can be copper, iron, aluminum, gold and other metal devices. Metal magnetic devices can be inserted in the center of the coil to enhance the magnetic field generated when conducting current. When there is only plastic skeleton or no skeleton in the center of the coil, a hollow coil is formed. It is widely used. In order to meet a variety of needs, it is designed as round, square, oval and various special-shaped shapes.

Type of air core coil:

Classified by winding structure: single-layer coil, multi-layer coil, honeycomb coil.

Classified by inductance form: fixed inductance and variable inductance.

Classified by the nature of work: antenna coil, oscillation coil, choke coil, notch coil, deflection coil.

Classified according to the properties of the magnetic conductor: hollow core coil, ferrite coil, iron core coil, copper core coil.

2. Working principle of air core coil

Inductance works based on the principle of electromagnetic induction. When a current flows through a wire, the hollow self-adhesive coil will generate a certain electromagnetic field self-adhesive coil around the wire, and the wire itself of the electromagnetic field will induce the wire within the electromagnetic field range. The effect of the hollow coil on the hollow self-adhesive coil wire itself that generates the electromagnetic field is called 'self-induction', That is, the changing current generated by the wire itself produces a changing magnetic field hollow coil, which further affects the current in the wire; The effect on other wires within the electromagnetic field range of the audio coil is called 'mutual inductance'.

The electrical characteristics of the inductance coil are opposite to that of the capacitor. 'Resist high frequency and pass low frequency'. That is to say, when the high frequency signal passes through the inductance coil, it will encounter great resistance and it is difficult to pass through; The resistance to low-frequency signal passing through it is relatively small, that is, low-frequency signal can easily pass through it. The resistance of inductance coil to DC is almost zero. The resistance, capacitance and inductance of the audio coil will present a certain resistance to the flow of the audio coil of the electrical signal in the circuit. This resistance is called 'impedance'. The impedance presented by the inductive coil to the current signal uses the self-inductance of the coil. The inductive coil is sometimes referred to as' inductance 'or' coil ', expressed by the letter' L '. When winding the inductive coil, we generally call it the number of turns of the coil.

3. Function of air core coil

1. Purpose of patch coil: widely used in common mode filter, multi-frequency transformer, impedance transformer, balanced and unbalanced conversion transformer, EMI noise suppression of electronic equipment, USB line of personal computer and peripheral equipment, LCD panel, low-voltage differential signal, car remote control key, etc.

2. The fixed inductance coil includes: ring coil, choke coil, common-mode coil, ferrite bead, power inductor, patch type and pin type. It is widely used in networks, telecommunications, computers, AC power supplies and peripheral equipment.

3. Features and applications of closed magnetic circuit high current surface mount power inductor: ideal DC-DC conversion inductor, high power, high saturation inductor, low DC resistance, suitable for high current, belt or parallel reel packaging for automatic surface mount, applied to video recorder power supply, video recorder power supply, LCD TV, laptop, office automation equipment, mobile communication equipment, DC/DC converter, etc.

4. Use of RF inductors: widely used in mobile phones, VCO, TCXO circuits and RF transceiver modules, GPS, wireless networks, Bluetooth modules, communication equipment, LCD TV, cameras, notebook computers, inkjet printers, photocopiers, display monitors, game consoles, color televisions, video recorders, CD players, cameras, digital cameras, automotive electronics, etc.

FKS Coils mainly produces inductors, chokes, coils, LAN magnets and transformers. The infrastructure of FKS Coils is built around the "intelligent solution provider". We use years of magnetic engineering and production experience to work closely with customers to provide innovative solutions. We provide long-term commitment and relationship to ensure that customers' needs are met. If you have requirements for transformers, inductors, hollow coils, or chokes, you can contact us at any time.