Air Core Toroidal Coil MnZn Power Ferrite Magnetic Wires For AC / DC Power

Air coils, Toroid coils power supplier AC/DC

It is a sensor to measure welding current. A copper wire is multi-lapped around belt-shaped core. Also, it is called Rogowskii coil, whose theory has been known since early times.

When a current i flows through a conductor, magnetic field is generated by Ampere's right-screw law. Magnetic flux intercrosses the coil, generating electro-motive force v in the coil

Output voltage v in the coil is proportional to coil cross section and the number of turns of winding; therefore, accurate measurement is conducted by means of toroidal windings

Features

A toroid has a magnetic field inside of itself that forms a series of concentric circles. Outside of it, the field is zero. The strength of this magnetic field depends on the number of coils the toroid has on its body. The field is not uniform, because the field is stronger near the inner part of the ring than it is nearer the outer part. This means that if r is the radius of the transformer, the magnetic field decreases as r becomes larger.

Air-core coils / MnZn power ferrite + magnetic wires for inductor.

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