SU30314A1 - Speaker - Google Patents

Description

The invention relates to loudspeakers. Its essence is that in a loudspeaker its movable or movable coils, the axes of which are parallel to the axes of constant magnetic fluxes, are arranged so that the centers of the coils are displaced relative to the axes of the magnetic fluxes.

In FIG. 1 shows a schematic of the proposed loudspeaker; FIG. 2-4 are various forms of its implementation in FIG. 1.o

The loudspeaker consists of magnetic poles N, S, which create a constant magnetic field (Fig. 1) in which the coil k is placed so that its aa and the axis of the constant magnetic field b are parallel but displaced relative to each other by such a distance so that about half of the coil is in the space between the poles of the magnets.

Through the coil k skip currents of audio frequency (transmission). The action of a magnetic field on an electric current flowing in a closed loop is made up of all the elementary actions.

dF {I-di-B field on the elements of the current, which is equal to 2 8

acting (integral of these vector products)

  .7.,

Where

/ - current, dl - the vector of the length element,

B is the vector of magnetic induction.

The direction of this resultant depends on the direction of the current, the flow around the circuit, and the direction of induction. In one case, the resultant pushes coil k out of the magnetic field, in the other, it draws it into it.

FIG. 2 shows the simplest implementation of a loudspeaker with one interpolar space and one coil associated with a loudspeaker; in fig. 3- shows a diagram with two interpolar spaces and two coils A vi B. The axes of the coils are arranged wider than the axes of the interpolar spaces. FIG. 4 shows a circuit with one coil and two interpolar spaces. The circuit of FIG. 3 in the case of removal from the midpoint C, it can / work at the push-pull output of the amplifier feeding the loudspeaker.

The subject matter of the invention.

A loudspeaker, characterized in that its moving or moving coils, the axes of which are parallel to the axes of constant magnetic fluxes, are arranged so that the centers of the coils are displaced relative to the axes of the magnetic fluxes.