低噪音有源音频机制造技术

技术编号:8928412 阅读:85 留言:0更新日期:2013-07-16 00:05
本实用新型专利技术公开了一种低噪音有源音频机,主要解决了现有技术中存在的音频放大电路无电源电路,和滤波电路,且结构复杂,成本较高,发音效果不好的问题。该低噪音有源音频机,包括串联负反馈稳压电源电路,还包括均与串联负反馈稳压电源电路并联的电容C5和电感L2,连接于电感L2的输入端和串联负反馈稳压电源电路的输出端之间的电感L1,同相输入端通过依次相连的电阻R7、电容C3和电阻R8与电感L1的输出端相连的运算放大器T1,输出端通过喇叭U2与运算放大器T1的输出端相连的运算放大器T2。通过上述方案,本实用新型专利技术达到了能够进行有源音频放大的目的,抗干扰能力强、体积小巧,具有很高的实用价值和推广价值。

Low noise active audio

The utility model discloses a low noise active audio machine mainly solves problems in the prior art audio amplifier circuit without power supply circuit and filter circuit, and the complex structure, high cost, the problem of the bad effect of pronunciation. The low noise active audio machine, including a series of negative feedback regulated power supply circuit, and also includes a series of negative feedback regulated power supply circuit of the shunt capacitor C5 and the inductor L2, the input end is connected to the inductor L2 and L1 between the output inductance series negative feedback regulated power supply circuit, T1 operational amplifier inverting input terminal is connected through output connected resistor R7, a capacitor C3 and a resistor R8 and an inductance L1, T2 operational amplifier output end of the horn U2 and T1 operational amplifier connected to the output end. Through the scheme, the utility model achieves the purpose of active audio amplification, and has the advantages of strong anti-interference ability, small volume, high practical value and popularization value.

【技术实现步骤摘要】

【技术保护点】
低噪音有源音频机,包括串联负反馈稳压电源电路,其特征在于,还包括均与串联负反馈稳压电源电路并联的电容C5和电感L2,连接于电感L2的输入端和串联负反馈稳压电源电路的输出端之间的电感L1,同相输入端通过依次相连的电阻R7、电容C3和电阻R8与电感L1的输出端相连的运算放大器T1,输出端通过喇叭U2与运算放大器T1的输出端相连的运算放大器T2,均连接于运算放大器T2的同相输入端和反相输入端之间的电容C6、电容C7和电阻R12,以及连接于电容C6和电容C7的输入端之间的电感L3。

【技术特征摘要】

【专利技术属性】
技术研发人员:黄欢
申请(专利权)人:成都果范创想科技有限公司
类型:实用新型
国别省市:

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