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Passive audio amplifier

An audio amplifier and sound amplification technology, which is applied to amplifiers, parts of amplifiers, electrical components, etc., can solve the problems of many parts, portability, inconvenient use, and high production costs, and achieve low cost, simple and elegant appearance, and easy to use The effect of simple method

Active Publication Date: 2012-09-26
SHAOXING FAST REAL ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It must rely on an external power supply to achieve the effect of amplifying the audio of the mobile phone. The disadvantages include: 1. It is dependent on the external power supply; 2. This kind of audio amplifier is an electronic component, and its production cost is relatively high; 3. It has many parts and components. It is easy to cause inconvenience in carrying and using, especially in car, travel, outdoor and other situations

Method used

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Embodiment Construction

[0017] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments.

[0018] Such as figure 1 As shown, it is a passive audio amplifier specially designed for mobile phones. It is made of hard plastic material and is in the shape of a boxed cuboid as a whole. It includes: a casing 100, a sound inlet 101 and a sound outlet 102 arranged on the casing 100, and The sound amplification channel 103 is disposed in the housing 100 and communicates with the sound inlet 101 and the sound outlet 102 .

[0019] The shell 100 is provided with a groove 104 for placing the mobile phone, the size of the groove 104 is similar to the size of the mobile phone, the sound amplification channel 103 is located in the housing below the groove 104, and the sound inlet 101 is arranged at one end of the bottom of the groove 104, its position Relative to the position of the speaker of the mobile phone, the speaker is fac...

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PUM

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Abstract

The invention discloses a passive audio amplifier which is characterized by comprising a shell, a sound inlet, a sound outlet and a sound amplifying passage. The sound inlet and the sound outlet are disposed on the shell. The sound amplifying passage is disposed in the shell and communicated with the sound inlet and the sound outlet. The cross section of sound amplifying passage is increasingly larger from the sound inlet to the sound outlet. The sound amplifying passage is provided with at least one section of bending passage. Compared with the prior art, the passive audio amplifier is simple in structure, low in cost, free of power supply, and convenient to carry.

Description

technical field [0001] The present invention relates to passive audio amplifiers, especially for portable electronic devices. Background technique [0002] The principle of all kinds of audio amplifiers currently used in the market is to obtain the audio signal from the mobile phone, and process the audio signal through electronic components that can realize power gain. It must rely on an external power supply to achieve the effect of amplifying the audio of the mobile phone. The disadvantages include: 1. It is dependent on the external power supply; 2. This kind of audio amplifier is an electronic component, and its production cost is relatively high; 3. It has many parts and components. It is easy to cause inconvenience in carrying and using, especially in vehicle, travel, outdoor and other situations. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a passive audio amplifier for the shortcomings of the electro...

Claims

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Application Information

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IPC IPC(8): H03F1/00
Inventor 张靖
Owner SHAOXING FAST REAL ELECTRONICS TECH CO LTD
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