The utility model discloses a low noise sounder, which mainly solves the problems of complicated structure and high cost existing in the prior art in order to reduce the noise of the audio device. The low noise sound device includes a non inverting input terminal is connected with the operational amplifier T1 resistor R1 and capacitor C1, C4 capacitor connected to the inverting input end of the operational amplifier T1, a resistor R2 and a resistor R3 input and output terminals are respectively connected with the capacitor C4, the shunt resistance R5 to output operational amplifier the T1 end and the inverting input of the inductor L2 and capacitor C3 and operational amplifier is connected to the T1 inductance L, U2 rectifier bridge is connected with the inductor L is connected with the bridge rectifier, audio amplifier circuit. The utility model has the advantages of good anti-interference ability, low cost and small volume, and has high practical value and popularization value.
【技术实现步骤摘要】
【技术保护点】
低噪音发音器，其特征在于，包括同相输入端连接有电阻R1和电容C1的运算放大器T1，与运算放大器T1的反相输入端相连的电容C4，分别连接于电容C4的输入端和输出端的电阻R2和电阻R3，通过并联于运算放大器T1的输出端和反相输入端之间的电阻R5、电感L2和电容C3与运算放大器T1相连的电感L，与电感L相连的整流桥U2，同相输入端通过均与整流桥并联的电感L1、电容C9和电容C10与整流桥相连的运算放大器T2，输出端通过喇叭U1与运算放大器T2的输出端相连的运算放大器T3。
【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：
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。