SU19665A1 - Electrodynamic loudspeaker - Google Patents

Description

  The invention consists

in a special constructive oscillator of an electrodynamic loudspeaker, in which the secondary winding of the transformer, consisting of one turn and moving in a magnetic field, is bonded with a membrane or diffuser.

In FIG. 1 is a side view of the loudspeaker, with a partial cut; FIG. 2 - view it from above. - Between the poles N h S of the permanent magnet G (or electromagnet) there is a copper plate P located, the frame is bent je; the ends of this plate are connected by a copper column E, which is rotated between the thrust points in NTani placed in racks with. Frame P serves as the secondary winding of the FHf transformer ends — the first winding f of which is connected to a low-frequency amplifier. Since rmsk the transformer secondary winding, c6c1c from one coil, is induced in it by Tdfee, depending on the currents in winding F.

The interaction of these currents with the magnetic field of the magnet M causes the frame P to vibrate, which is transmitted through the rod b to the diffuser or membrane. The described loudspeaker vibrator does not have its own oscillation period and can be connected directly to the low-frequency amplifier without a special intermediate transformer .;

The subject of the patent.

 An electrodynamic loudspeaker, in which the secondary winding of the transformer, consisting of one turn and moving in a magnetic field, is bonded to a membrane or diffuser, characterized in that said secondary winding P is made in the form of a rectangular frame, one side of which is placed between the poles of The magnet L /, / a of the other is opposite to the side, located 1 in the alternating magnetic field of the transformer FR, hinged in racks C.

1 patent B.V. Eostvna M 19665

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