Self-drive piezo

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Revision as of 22:15, 2 July 2021 by Chao (talk | contribs) (Created page with "* 供应 直径27mm铜片贴20瓷片 三极 自激式 反馈极压电陶瓷蜂鸣片 == Other Buzzer== <gallery> File:Three-electrode-buzzer.jpg | three electrode </gallery>...")
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  • 供应 直径27mm铜片贴20瓷片 三极 自激式 反馈极压电陶瓷蜂鸣片

Other Buzzer

  • three electrode

三极压电陶瓷蜂鸣片的反馈量怎么测量啊

  • 三级压电陶瓷在工作时，反馈极接一个47K可调电阻，使用你选定的标称电压值，让蜂鸣片工作，慢慢调整电位器直道蜂鸣器声音最响，但是要求总电流不准大于10-20mA(12V时），停止工作，使用万用表量一下47K电位器的阻值，就是此款蜂鸣片的反馈阻值


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