SU794782A1

SU794782A1 - Electroacoustic transformer

Info

Publication number: SU794782A1
Application number: SU762378582A
Authority: SU
Inventors: Аслануко Гериханович Хапачев
Original assignee: Кабардино-Балкарский Государственныйуниверситет
Priority date: 1976-07-01
Filing date: 1976-07-01
Publication date: 1981-01-07

Description

Изобретение относится к области приборостроения и может быть использовано при изготовлении электроакустических преобразователей.The invention relates to the field of instrumentation and can be used in the manufacture of electro-acoustic transducers.

Известен электроакустический преобразователь, содержащий корпус, внутри которого размещены два постоянных магнита с полюсными надставками, на которые надеты две катушки и железная мембрана, расположенная над полюсными надставками [1].Known electro-acoustic transducer containing a housing, inside of which are placed two permanent magnets with pole extensions, on which two coils are mounted and an iron membrane located above the pole extensions [1].

Недостатком этого преобразователя является большая неравномерность частотной характеристики и узкий диапазон воспроизводимых частот.The disadvantage of this converter is the large unevenness of the frequency response and a narrow range of reproducible frequencies.

Известен также электроакустический преобразователь, содержащий колебательную систему с гофрированной по краям мембраной, установленные в корпусе [2].Also known electroacoustic transducer containing an oscillatory system with a corrugated membrane at the edges, installed in the housing [2].

Однако этот преобразователь также не обеспечивает требуемый диапазон воспроизводимых частот.However, this converter also does not provide the required frequency range.

Целью изобретения является улучшение частотной характеристики преобразователя.The aim of the invention is to improve the frequency response of the Converter.

Поставленная цель достигается за счет того, что мембрана снабжена крепежными элементами, каждый из которых имеет свою резонансную частоту.This goal is achieved due to the fact that the membrane is equipped with fasteners, each of which has its own resonant frequency.

На фиг. 1 схематически показан вид электроакустического преобразователя со стороны мембраны; на фиг. 2 — мембрана.In FIG. 1 schematically shows a view of the electro-acoustic transducer from the side of the membrane; in FIG. 2 - membrane.

Электроакустический преобразователь 5 содержит магнитный сердечник 1, мембрану 2, связанный с корпусом крепежными элементами 3, каждый из которых имеет свою резонансную частоту, неподвижный ободок 4, прижимающий мембрану 2 к 110 корпусу. Мембрана имеет вырезы 5.The electro-acoustic transducer 5 contains a magnetic core 1, a membrane 2, connected to the housing by fasteners 3, each of which has its own resonant frequency, a stationary rim 4, pressing the membrane 2 to the 110 housing. The membrane has cutouts 5.

При работе преобразователя ввиду различия резонансных свойств крепежных элементов 3 колебания мембраны 2 будут 15 характеризоваться несколькими резонансными частотами, определяемыми резонансными частотами крепежных элементов. При этом диапазон воспроизводимых частот расширяется.When the Converter is in operation due to the difference in the resonance properties of the fasteners 3, the vibrations of the membrane 2 will be 15 characterized by several resonant frequencies determined by the resonant frequencies of the fasteners. At the same time, the range of reproduced frequencies expands.

SO Таким образом, описанный электроакустический преобразователь обеспечивает улучшение частотной характеристики путем расширения диапазона воспроизводимых частот.SO Thus, the described electro-acoustic transducer provides improved frequency response by expanding the range of reproducible frequencies.

Claims

The invention relates to the field of instrumentation and can be used in the manufacture of electroacoustic transducers. An electroacoustic transducer is known, comprising a housing inside which two permanent magnets with pole extensions are placed, on which two coils are mounted and an iron membrane located above the pole extensions 1. The disadvantage of this transducer is the large frequency response unevenness and a narrow range of reproducible frequencies. Also known is an electroacoustic transducer containing an oscillating system with a corrugated along the edges of the membrane installed in the housing 2. However, this transducer also does not provide the required frequency reproduction range. The aim of the invention is to improve the frequency response of the converter. The goal is achieved due to the fact that the membrane is provided with fasteners, each of which has its own resonant frequency. FIG. 1 shows a schematic view of the electroacoustic transducer from the side of the membrane; in fig. 2 - membrane. The electroacoustic transducer contains a magnetic core 1, a membrane 2 connected to the case by fixing elements 3, of which has its own resonant frequency, a fixed rim 4, which presses the membrane 2 to the case. The membrane has notches 5. When the converter is in operation, due to differences in the resonant properties of the fasteners 3, the vibrations of the membrane 2 will be characterized by several resonant frequencies determined by the resonant frequencies of the fasteners. At the same time, the range of reproduced frequencies is expanded. Thus, the described electroacoustic converter provides an improvement in the frequency response by expanding the range of reproducible frequencies. Claims The electroacoustic transducer containing an oscillating system with a corrugated membrane, installed in Kcjpnyce, is characterized in that, in order to improve the frequency response of the transducer, the membrane is equipped with fasteners, each of which has its own resonant frequency. Information sources; taken into account in the examination of 1. Zhukov D. et al. Telephony. M., “Dosaaf, 1954, from 109-110.

2. Sanozhnikov M. A. Electroacoustics. M., “Svy, 1978, p. 161 - 164 (prototy).