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High-performance hearing-aid made of discrete components

A discrete component, high-performance technology, used in hearing aids, electrical components, etc., can solve the problems of high price and difficult to popularize, and achieve the effects of good sound quality, improved hearing, and small static current.

Inactive Publication Date: 2011-07-13
黄宇嵩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its output power can meet the requirements of hearing-impaired people, can improve the hearing of the elderly, and can also help teenagers learn and remember. It solves or makes up for the problems of high prices and difficult popularization of some brands of hearing aids on the market.

Method used

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  • High-performance hearing-aid made of discrete components

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Embodiment Construction

[0016] The present invention can be realized by implementing the circuit working principle diagram of the high-performance hearing aid made of discrete components shown in the accompanying drawings, the description of the accompanying drawings and the technical requirements of the components described below.

[0017] Selection of components and their technical parameters

[0018] The electret microphone MIC should be an electret microphone with output at both ends, and its drain D is the audio signal output pin. The metal shell end of the electret microphone is connected to the source S and then connected to the circuit ground GND. The field effect tube is connected to the drain D as the output terminal, and the output signal has a certain voltage gain, which can make the sensitivity of the electret microphone relatively high.

[0019] The electret microphone MIC selects CM-18W (φ10mm×6.5mm) high-sensitivity electret microphone, and its sensitivity is divided into five levels,...

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Abstract

The invention belongs to the field of electronic technologies and low-frequency signal amplification, and relates to a high-performance hearing-aid made of discrete components. The hearing-aid comprises a direct current (DC) power supply, a sound wave signal conversion circuit, a preposed low-frequency amplification circuit, a volume regulation circuit and a power amplification circuit. The hearing-aid is characterized in that a PNP (Positive-Negative-Positive) triode VT3 in the power amplification circuit is connected to be an emitter output form, and a headset socket CZ with a normally open contact is connected to an output load loop of the PNP triode VT3. The hearing-aid can be made of the discrete components without special integrated circuit with higher cost. The invention has the characteristics of simple circuit structure, fewer peripheral elements, wide working voltage range, less static current and electricity consumption, little cross distortion, good tone quality, and the like. The output power of the hearing-aid can meet the requirements on people with poor hearing. The problems of high price, difficulty in popularization and the like of some brands of hearing-aids on the market are solved or overcome.

Description

technical field [0001] The invention belongs to the field of electronic technology and low-frequency signal amplification, and relates to a high-performance hearing aid made of discrete components. Background technique [0002] Hearing aids on the market are mostly designed and manufactured with dedicated integrated power amplifier circuits. There are many integrated circuit peripheral components in the circuit, the circuit structure is relatively complicated, and the market price is relatively expensive. The invention is a high-performance hearing aid made of discrete components, which is essentially a low-frequency signal amplifier. Many years ago, due to the poor quality and performance of germanium transistors, in order to obtain a better signal amplification effect, high-frequency transistors made of germanium materials were often used as the amplification components of the circuit in the production of hearing aids. Nowadays, the quality and performance of components a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R25/00
Inventor 黄宇嵩
Owner 黄宇嵩
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