滤波型有源发音装置制造方法及图纸

本实用新型专利技术公开了一种滤波型有源发音装置，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。该滤波型有源发音装置，包括串联负反馈稳压电源电路，还包括与串联负反馈稳压电源电路的输出端相连的可变电感L，与可变电感L相连的由四个二极管构成的整流电路U1，均与整流电路U1并联的电感L1、电容C5和电容C6，同相输入端通过依次相连的电阻R7、电容C3和电阻R8与电容C6的输入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。（*该技术在2023年保护过期，可自由使用*）

Filtering type active sound device

The utility model discloses a filter type active sound device, mainly solves the existing technology in audio amplification circuit without power supply circuit and filter circuit, and the complex structure, high cost, the problem of the bad effect of pronunciation. The filter type active sound device, including a series of negative feedback regulated power supply circuit, including variable inductance L is connected with the output feedback voltage series negative end of the power supply circuit, composed of four diodes rectifier circuit U1 is connected with the variable inductance L, and rectifier circuit of U1 shunt inductance L1, capacitance C5 and capacitor C6 T1, operational amplifier inverting input terminal is connected through connected resistor R7 and capacitor C3 and resistor R8 and capacitor C6 input, T2 output end of the operational amplifier and speaker U2 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】
滤波型有源发音装置，包括串联负反馈稳压电源电路，其特征在于，还包括与串联负反馈稳压电源电路的输出端相连的可变电感L，与可变电感L相连的由四个二极管构成的整流电路U1，均与整流电路U1并联的电感L1、电容C5和电容C6，同相输入端通过依次相连的电阻R7、电容C3和电阻R8与电容C6的输入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。

【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：