pnp三极管驱动蜂鸣器

当使用PNP型三极管驱动蜂鸣器时，蜂鸣器的位置有两种解法。一种是将蜂鸣器连接到PNP的集电极，控制信号为低电平时，PNP导通，蜂鸣器响；控制信号为高电平时，PNP断开，蜂鸣器不响。另一种解法是将蜂鸣器连接到PNP的发射极，控制信号为低电平时，PNP断开，蜂鸣器不响；控制信号为高电平时，PNP导通，蜂鸣器响。在选择PNP型三极管驱动蜂鸣器时，需要确保VCC电压不是5V，否则会导致蜂鸣器一直响。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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- *1* *3* [三极管驱动蜂鸣器](https://blog.csdn.net/weixin_72283641/article/details/131205518)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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