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有源蜂鸣器怎么改变音调
更新时间: 2020-07-05 00:00:00  

改变工作电压,在一定范围内能改变有源蜂鸣器音调。有源蜂鸣器是一种一体化结构的电子讯响器,采用直流电压供电,广泛应用于计算机、打印机、复印机、报警器、电子玩具、汽车电子设备、电话机、定时器等电子产品中作发声器件。蜂鸣器主要分为压电式蜂鸣器和电磁式蜂鸣器两种类型。

关键词: 怎么 改变 音调

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