Unlock instant, AI-driven research and patent intelligence for your innovation.

Electro-acoustic converter

An electro-acoustic converter and electrostatic technology, applied in the direction of electrostatic transducers, microphones, sensors, electrical components, etc., can solve problems such as expensive, insufficient improvement of humidity insensitivity, and increased volume of carbon capsules

Inactive Publication Date: 2002-09-25
AKG ACOUSTICS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition to their various advantages over other receivers, the above two methods of implementing electroacoustic receivers have a serious disadvantage: they are sensitive to air humidity
However this leads to larger and more expensive carbon cartridges and only a small and insufficient increase in humidity insensitivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electro-acoustic converter
  • Electro-acoustic converter
  • Electro-acoustic converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] figure 1 A cross-sectional view of a popular electrostatic converter is shown. A membrane 1 is inserted into a carbon cartridge carrier 3 by means of a membrane ring 2 . Gasket 4 maintains the diaphragm 1 and electrode 5 at a distance of about 40 microns or less from each other and is fabricated from a good electrical insulating material, preferably a thin film. Behind the electrode, in the capsule carrier 3 , at a certain distance from the electrode, there is an acoustic wiper 6 which is necessary for the acoustic adjustment of the capsule.

[0016] figure 2 The invention is clearly shown. A part of the electrode 5 is shown enlarged. Attached to the electrodes is a resistor 7 which is connected to a voltage source. The function of this resistor is to heat the electrode 5 . In order to achieve or avoid sinking of the water vapor - which is necessary and sufficient in an environment "contaminated" with water vapor - a small temperature difference of a few tenths o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An electrostatically operating electroacoustic transducer, operating as a sound receiver and configured to be mounted in a microphone capsule, has an electrode and a diaphragm connected to one another at a spacing from one another by a spacer ring, wherein on the electrode at least one first electric resistor is arranged which is connected to a power supply during operation of the microphone. The resistor is heated to prevent condensation of water vapor, and this improves the resistance of the microphone against ambient humidity.

Description

technical field [0001] The invention relates to an electro-acoustic converter, which works as a sound receiver, can be used in a microphone capsule, and works on the basis of the electro-acoustic principle. This transducer has a diaphragm, regardless of how it works physically, that is placed in the sound field and directly excited by it to vibrate. Background technique [0002] The object of the invention is an electroacoustic microphone. The electrode of the electroacoustic transducer is an elastic, clamped and fixed diaphragm and a hard electrode, which is only called the electrode in most cases. The above two constitute a capacitor whose capacity is changed by the pressure vibration of the sound field. Since an electric field is formed between the electrodes of the electroacoustic transducer, the change in capacity of the transducer can be converted into a change in voltage by a subsequent amplifier. [0003] According to the method of forming...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04R19/04
CPCH04R19/04
Inventor 帕夫罗维奇·吉诺
Owner AKG ACOUSTICS