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The ampere-turn (symbol A⋅t) is the MKS (metre–kilogram–second) unit of magnetomotive force (MMF), represented by a direct current of one ampere flowing in a single-turn loop. [1] Turns refers to the winding number of an electrical conductor composing an electromagnetic coil .
Structure of a coil with an even number of turns per. Given: Wire-Ø Cu 0,3 mm → CU1L=0,334 mm (According to the table) Coil width: should be 9 mm // 150 turns, coil inner diameter 8mm. a) Calculation of the winding width In the first iteration step, a winding with the same number of windings per layer is assumed or taken as a basis.
Mean Length Turn, sometimes Mean Length per Turn is the mean length of winding turn in a coil, usually referred to by the initials MLT. The dimensions of a coil former or bobbin define the MLT of a full wound coil. [ 1 ]
Thus, for a typical inductance (a coil of conducting wire), the flux linkage is equivalent to magnetic flux, which is the total magnetic field passing through the surface (i.e., normal to that surface) formed by a closed conducting loop coil and is determined by the number of turns in the coil and the magnetic field, i.e.,
In a coil of multiple turns of wire the magnetic field of the turns adds in the center of the coil, creating a strong field. This drawing shows a cross section through the center of the coil. The crosses are wires in which current is moving into the page; the dots are wires in which current is emerging from the page.
The SI unit of mmf is the ampere, the same as the unit of current [3] (analogously the units of emf and voltage are both the volt).Informally, and frequently, this unit is stated as the ampere-turn to avoid confusion with current.
Each turn of the coil is at a slightly different potential, so the electric field between neighboring turns stores charge on the wire, so the coil acts as if it has a capacitor in parallel with it. At a high enough frequency this capacitance can resonate with the inductance of the coil forming a tuned circuit , causing the coil to become self ...
is the mutual inductance, and the subscript specifies the relationship of the voltage induced in coil 2 due to the current in coil 1. is the number of turns in coil 1, is the number of turns in coil 2, is the permeance of the space occupied by the flux.