https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=Self-drive_piezo
Self-drive piezo - Revision history
2026-07-22T09:35:30Z
Revision history for this page on the wiki
MediaWiki 1.37.2
https://w.electrodragon.com/w/index.php?title=Self-drive_piezo&diff=31742&oldid=prev
Chao: 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>..."
2021-07-02T14:15:56Z
<p>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>..."</p>
<p><b>New page</b></p><div>* 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<br />
== Other Buzzer==<br />
<br />
<gallery><br />
File:Three-electrode-buzzer.jpg | three electrode<br />
</gallery><br />
<br />
三极压电陶瓷蜂鸣片的反馈量怎么测量啊<br />
<br />
* 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<br />
<br />
<br />
* https://electronics.stackexchange.com/questions/18212/whats-the-third-wire-on-a-piezo-buzzer<br />
* https://www.hackster.io/taunoerik/self-drive-piezo-buzzer-e9786f<br />
[[category: buzzer]]</div>
Chao