The utility model discloses an active audio amplifying circuit, which mainly solves the problems of the prior art that the audio amplifying circuit has no power supply circuit, and the structure is complex and the cost is high. The active audio amplifier circuit, including a series of negative feedback regulated power supply circuit, also includes a non inverting input terminal connected through a resistor R7 and a capacitor C3 and a resistor R8 and a series of negative feedback amplifier is connected to T1 power supply circuit, 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 low cost, small size, high practical value and popularization value.
【技术实现步骤摘要】
【技术保护点】
有源音频放大电路,包括串联负反馈稳压电源电路,其特征在于,还包括同相输入端通过依次相连的电阻R7、电容C3和电阻R8与串联负反馈稳压电源电路相连的运算放大器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。
【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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