2.0 computer audio circuit simultaneously supporting USB power supply and data transmission

Abstract

The utility model discloses a 2.0 computer audio circuit simultaneously supporting USB power supply and data transmission. The 2.0 computer audio circuit comprises an audio chip U1, a USB connector, a loudspeaker SPK1 and a loudspeaker SPK2, the USB interface and the audio chip U1 provide a power supply of + 5V, the audio chip U1 communicates with a computer to read audio signals after being powered on, and the two loudspeakers SPK1 and SPK2 are pushed to sound through an internal amplification circuit. An adapter is not needed, and a computer USB port is independently used for power supply; a 3.5 audio input connecting line is not needed, and the USB completes audio data transmission while supplying power.

Description

Technical Field

[0001] The utility model relates to an audio circuit, in particular to a 2.0 computer audio circuit which supports USB power supply and data transmission at the same time. Background Art

[0002] Most computer speakers on the market are powered by adapters and connected to audio inputs via 3.5-inch lotus cables. This method of separate power and data connections has the following problems: high cost, confusing wiring, and inconvenient operation; the adapter is plugged in for a long time, wasting electricity and posing a safety hazard; the 3.5-inch lotus cable audio connection has poor contact over time. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a 2.0 computer audio circuit that supports USB power supply and data transmission at the same time. The USB connection port supports USB power supply and data transmission at the same time, solving the technical problems existing in the prior art.

[0004] To solve the above technical problems, the technical solution of the utility model is: a 2.0 computer audio circuit that supports USB power supply and data transmission at the same time, including an audio chip U1, a USB connection port, a speaker SPK1 and a speaker SPK2; the model of the audio chip U1 is SSS1603, the D+ end of the USB connection port is connected to the 46th pin of the audio chip U1 through a resistor R1, the D- end of the USB connection port is connected to the 47th pin of the audio chip U1 through a resistor R2, the power end of the USB connection port is respectively connected to the 15th pin, the 22nd pin and the 36th pin of the audio chip U1 through an inductor L2 to provide a +5V power supply, the 23rd pin of the audio chip U1 is connected to the positive electrode of the speaker SPK1 through a resistor R8, the 19th pin of the audio chip U1 is connected to the negative electrode of the speaker SPK1 through a resistor R9, the 16th pin of the audio chip U1 is connected to the negative electrode of the speaker SPK2 through a resistor R10, and the 14th pin of the audio chip U1 is connected to the positive electrode of the speaker SPK2 through a resistor R11. The principle of the utility model: the USB connection port audio chip U1 provides power +5V. After the audio chip U1 is powered on, it communicates with the computer to read the audio signal and drives the two speakers SPK1 and SPK2 to sound through the internal amplification circuit.

[0005] As an improvement, it also includes a mute button connected to the 38th and 43rd pins of the audio chip U1, a volume minus button connected to the 42nd pin of the audio chip U1, and a volume plus button connected to the 44th pin of the audio chip U1.

[0006] Compared with the prior art, the utility model has the following beneficial effects:

[0007] No adapter is needed, just use the computer USB port for power supply; no 3.5 audio input cable is needed, USB can provide power and complete audio data transmission at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is the circuit schematic diagram of the utility model. DETAILED DESCRIPTION

[0009] The utility model will be further described below in conjunction with the accompanying drawings.

[0010] like Figure 1 As shown, a 2.0 computer audio circuit that supports USB power supply and data transmission at the same time includes an audio chip U1, a USB connection port, a speaker SPK1, a speaker SPK2 and a key circuit. The model of the audio chip U1 is SSS1603, the D+ end of the USB connection port is connected to the 46th pin of the audio chip U1 through a resistor R1, the D- end of the USB connection port is connected to the 47th pin of the audio chip U1 through a resistor R2, the power end of the USB connection port is respectively connected to the 15th pin, the 22nd pin and the 36th pin of the audio chip U1 through an inductor L2 to provide a +5V power supply, the 23rd pin of the audio chip U1 is connected to the positive electrode of the speaker SPK1 through a resistor R8, the 19th pin of the audio chip U1 is connected to the negative electrode of the speaker SPK1 through a resistor R9, the 16th pin of the audio chip U1 is connected to the negative electrode of the speaker SPK2 through a resistor R10, and the 14th pin of the audio chip U1 is connected to the positive electrode of the speaker SPK2 through a resistor R11. The key circuit includes a mute key connected to pins 38 and 43 of the audio chip U1, a volume minus key connected to pin 42 of the audio chip U1, and a volume plus key connected to pin 44 of the audio chip U1.

[0011] The principle of the utility model: the USB connection port audio chip U1 provides power +5V. After the audio chip U1 is powered on, it communicates with the computer to read the audio signal and drives the two speakers SPK1 and SPK2 to sound through the internal amplification circuit.

Claims

1. A 2.0 computer audio circuit that supports both USB power supply and data transmission, characterized in that: It includes an audio chip U1, a USB connection port, a speaker SPK1 and a speaker SPK2; the model of the audio chip U1 is SSS1603, the D+ end of the USB connection port is connected to the 46th pin of the audio chip U1 through a resistor R1, the D- end of the USB connection port is connected to the 47th pin of the audio chip U1 through a resistor R2, the power end of the USB connection port is respectively connected to the 15th pin, the 22nd pin and the 36th pin of the audio chip U1 through an inductor L2 to provide a +5V power supply, the 23rd pin of the audio chip U1 is connected to the positive electrode of the speaker SPK1 through a resistor R8, the 19th pin of the audio chip U1 is connected to the negative electrode of the speaker SPK1 through a resistor R9, the 16th pin of the audio chip U1 is connected to the negative electrode of the speaker SPK2 through a resistor R10, and the 14th pin of the audio chip U1 is connected to the positive electrode of the speaker SPK2 through a resistor R11.

2. According to claim 1, a 2.0 computer audio circuit that supports both USB power supply and data transmission, characterized in that: It also includes a mute button connected to pins 38 and 43 of the audio chip U1, a volume minus button connected to pin 42 of the audio chip U1, and a volume plus button connected to pin 44 of the audio chip U1.

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