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Low-power sound box

A low-power, audio technology, applied in the direction of frequency/direction characteristic devices, transducer circuits, sensors, etc., can solve the problems of circuit performance index decline, small size, impossible to fit into circuit boards, etc., to achieve small power and volume Small, loud effect

Inactive Publication Date: 2018-11-30
深圳市炜辉实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, because of the small size, it is impossible to load more functional circuit boards
Part of the performance of the circuit is also reduced due to the simplification of the circuit

Method used

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] see Figure 1-6 , in an embodiment of the present invention, a low-power audio system includes an audio decoding circuit and a signal input selection circuit, a charging circuit, a power amplifier circuit, a card reading circuit, and a voltage-dividing control circuit, and the audio decoding circuit and the signal input selection circuit include Chip IC2 and crystal oscillator X1, charging circuit includes USB interface, triode Q1 and switch K4, power a...

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PUM

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Abstract

The invention discloses a low-power sound box, comprising an audio decoding circuit, a signal input selection circuit, a charging circuit, a power amplifier circuit, a card reading circuit and a voltage division type control circuit, wherein the audio decoding circuit and the signal input selection circuit comprise a chip IC2 and a crystal oscillator X1, the charging circuit comprises a USB interface, a triode Q1 and a selector switch K4, and the power amplifier circuit comprises a chip IC1, a resistor R4 and a capacitor C9. The low-power sound box disclosed by the invention has the beneficialeffects that: 1. the circuit is simple, and the manufactured product has a small volume; 2. by adoption of the resonance technology, the volume is high; and 3. the power is low, and as a mobile phonebattery is used for supplying power, the time of endurance is long, and the use is convenient.

Description

technical field [0001] The invention relates to a sound, in particular to a low-power sound. Background technique [0002] Since most of the audio products on the market are differentiated in two aspects, one is designed with sound quality as the main purpose. It is extremely perfect in terms of sound quality requirements, for example, home audio systems of major audio manufacturers, CDs, power amplifiers, high-fidelity, high-sensitivity speakers and so on. Due to the non-restriction of the equipment, the main purpose of this product is to restore the original signal quality of the music in the process of restoring the sound. In the collection of sound sources, the processing of audio signals, the amplification performance of the power amplifier circuit, and the sound reproduction of the speakers, we strive to achieve perfection. Therefore, this type of product is incomparable in performance, because you cannot compete with a set of HIFI equipment in a limited space, venue...

Claims

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Application Information

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IPC IPC(8): H04R1/20H04R3/00
CPCH04R1/20H04R3/00H04R2420/03
Inventor 姚菲子
Owner 深圳市炜辉实业有限公司