CN201957228U - A wire controller for external audio amplifier - Google Patents

Abstract

The utility model discloses an external power amplifier line controller, the structure of which consists of a line controller main body, a USB socket, a volume adjusting button, a sound source equipment interface and a built-in circuit, wherein the USB socket and the sound source equipment interface are standard interfaces, the former directly gets electricity through the USB interface, and the latter can be connected with equipment with audio input ports such as a computer, a mobile phone, MP3/MP4/CD and the like; the built-in circuit comprises a power supply purification circuit, an audio input circuit and an audio signal frequency filtering circuit, and the power supply purification circuit, the audio input circuit and the audio signal frequency filtering circuit are integrated in the wire controller body. The utility model supplies power through the direct insertion type USB interface, cancels the common power line of the sound equipment, and optimizes the internal circuit; the power amplifier circuit is arranged externally, so that the circuit is far away from the loudspeaker, and the power amplifier music signal is output more purely; and moreover, the volume adjusting part is integrated, the control is convenient, and the method can be widely applied to the field of multimedia sound playing.

Description

A wire controller for external audio amplifier

technical field

The utility model relates to a multimedia audio connection device, in particular to a wire controller with an external audio power amplifier.

Background technique

With the rapid development of electronic music products, the audio technology supporting the playback of music products is also constantly improving. Good audio technology needs to consider its power, impedance, distortion and dynamic range and other indicators. These indicators largely depend on the role of the power amplifier. It is also a technical consideration of the requirements for matching the power amplifier and the sound.

In the current audio power amplifier technology, the power amplifier line and the audio power line are connected to the audio equipment together. Due to the large number of lines, the lines are often piled up next to the sound box, resulting in large power ripple interference inside the sound box. At the same time, current consumption occurs when the power line supplies power. This makes the power amplifier work unstable; furthermore, the volume adjustment function circuit of the existing power amplifier is built into the audio system, so that the sound quality is affected by the impedance of the circuit and is distorted.

Along with people's high signal-to-noise ratio and high-fidelity requirements for audio-visual music, there is an urgent need for a power amplifier line connection device that matches well with the audio.

Contents of the invention

The purpose of this utility model is to provide a wire controller with an external power amplifier for audio, which integrates the power amplifier circuit of the audio and the USB power supply part into an independent wire controller, and directly takes power through the USB interface, reducing the current caused by the power line Consumption, while integrating the volume adjustment function, keep the circuit away from the speaker and reduce mutual interference.

The technical scheme of the utility model patent is as follows: a wire controller with an external audio power amplifier, its structure is composed of a wire controller body, a USB socket, a volume adjustment button, a sound source device interface and a built-in circuit, and one end of the wire controller body has a USB interface , and the other end is the trapezoidal sound source device interface and the circular sound source device and audio inlet respectively, and the volume adjustment button is located on one side of the main body of the wire controller.

The USB socket is a standard in-line interface, which can be directly connected to a computer with a USB interface or a power adapter for power supply, canceling the power cord commonly used in audio equipment, and reducing circuit consumption.

The volume adjustment button is located on the wire controller, which can directly adjust the sound volume and is easy to operate.

The audio source device interface is located at the other end of the wire controller, and is a standard circular interface and a trapezoidal interface respectively, which can be connected to devices with audio input ports such as computers, mobile phones, MP3/MP4/CD, and can also be connected to audio interfaces. , widely used.

The built-in circuit is a power purification circuit, an audio input circuit, and an audio signal frequency filter circuit. The three are integrated in the body of the wire controller, the internal circuit is optimized, and the power amplifier circuit is placed outside, which is convenient for connection and reduces the use of wires.

The beneficial effects of the utility model are:

1. The independent wire controller takes power directly through the USB interface, which reduces the current consumption problem caused by the power line and reduces the power ripple interference at the same time.

2. Put the plug-in power amplifier circuit outside, keep the circuit away from the speaker, reduce mutual interference, make the power amplifier work more stable, and the music signal output of the power amplifier is more pure.

3. The volume adjustment function is removed from the inside of the speaker, so that there is no source of interference inside the speaker and it is easy to operate.

4. Power amplifier, power supply, and volume adjustment are integrated with three circuits, which optimizes the internal circuit and reduces the use of wires.

5. The utility model is easy to operate, widely used, small in size, easy to carry, and can be mass-produced and used.

Contents of the invention

Fig. 1 is the front view of the utility model, and among the figure, 1 is the main body of the wire controller, 2 is the USB interface, 3 is the volume adjustment button, 4 is the trapezoidal sound source device interface, 5 is the circular sound source device and the sound inlet.

Fig. 2 is the working flowchart of the circuit of the utility model.

Fig. 3 is the schematic circuit diagram of the utility model.

Contents of the invention

Below in conjunction with accompanying drawing, the specific embodiment of the utility model patent will be further described.

As shown in Figure 1, a wire controller with an external power amplifier for audio, (1) is the main body of the wire controller, one end has a USB interface (2), and the other end is respectively a trapezoidal audio source device interface (4) and a circular audio source device and the audio inlet (5), the volume adjustment button (3) is located on one side of the wire controller main body (1).

The utility model patent is as follows in specific embodiment.

Embodiment 1: As shown in Figure 1, when the utility model is connected to a computer and the music stored in the computer is played through the audio equipment, the USB interface (2) can be directly inserted into the USB port of the computer, and the circular audio source equipment at the other end and The audio inlet (5) is connected to the audio cable of the audio equipment. At this time, the computer can power on the audio through the USB interface (2), and the entire playback device starts. When the song is playing, the volume adjustment button (3) can be adjusted. Volume adjustment, easy operation, clear and pure sound quality.

Embodiment 2: As shown in Figure 1, when the utility model needs to play the songs of mobile phones, MP3/MP4/CD and other devices, the USB interface (2) can be connected to the power adapter with USB socket, and the circular sound source device And the audio inlet (5) is connected with the audio line of the audio equipment, mobile phones, MP3/MP4/CD and other equipment can be connected with the trapezoidal audio source equipment interface (4) through the data line, start the power switch, the audio is powered on, and the entire playback device starts , you can also adjust the volume of the sound with the volume adjustment button (3).

Embodiment 3: As shown in Figure 1 and Figure 2, after starting the playback device, after the USB interface (2) is powered on, the power purification circuit is used to increase the power, eliminate power interference, and improve the noise reduction ratio. At the same time, the trapezoidal sound source device interface ( 4) After detecting the music signal with the circular audio source equipment and audio inlet (5), the frequency response of the audio signal is filtered to improve the frequency response and reduce the distortion. The two are combined through the power amplifier circuit and finally output to the speaker.

Claims (5)

1. external power amplifier line control machine of sound equipment, its structure is regulated button, audiogenic device interface and built-in circuit by line control machine main body, USB socket, volume and is formed, it is characterized in that: line control machine main body (1) one end has USB interface (2), the other end is respectively trapezoidal audiogenic device interface (4) and circular audiogenic device and sound equipment access port (5), and volume is regulated button (3) and is positioned on the one side of line control machine main body (1).

2. the external power amplifier line control machine of a kind of sound equipment according to claim 1 is characterized in that: described USB socket is the direct insertion interface of standard, can directly link to each other with the computer or the suitable device of power supply of band USB interface.

3. the external power amplifier line control machine of a kind of sound equipment according to claim 1 is characterized in that: described volume is regulated button and is positioned on the line control machine scalable acoustics volume.

4. the external power amplifier line control machine of a kind of sound equipment according to claim 1, it is characterized in that: described audiogenic device interface is positioned at the other end of line control machine, is respectively the circular interface and the trapezoidal interface of standard.

5. the external power amplifier line control machine of a kind of sound equipment according to claim 1 is characterized in that: described built-in circuit is power purification circuit, audio frequency incoming line, audio signal frequency filtering circuit, and the three is integrated in the line traffic control body.

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