What is a hollow coil? Hollow coil divided into two parts, namely a hollow with the coil. Hollow name implies center is nothing, a coil that is wound up and a guide wire, insulated wire with each other, when the current flows through the wire around the coil to generate a magnetic field strength with the strength of the current flowing through the coil with coil It is proportional to the number of turns. Similarly, in a certain field, magnetic field lines cut made coil operation, the magnetic field can also be converted into electric energy, utilizing the principle of magneto-electric conversion can be made of a relay, a motor, a motor, a wireless device, speakers and other devices. Conductor material may be copper, iron, aluminum, gold and other metal devices, center of the coil can be inserted into the metal magnetic device field strengthening its conduction current is generated when the coil center is only a plastic frame or skeleton to form a hollow coil, hollow coil widely used in order to meet the various needs of the people it is designed to be round, square, oval shape and the Alien.

Hollow coil types

Hollow coil winding according to the type of structure classification: single coil, multi-coil, honeycomb coil.

Hollow coil inductance in the form of species by category: fixed inductor, variable inductor.

Hollow coil types according to the nature of work Category: antenna coil, the oscillation coil, choke coil, notch coils, deflection coils.

Hollow coil types by nature guide magnet Category: air-core coil, ferrite coils, iron core coil, copper core coil.