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【原创】基于LM4889组成的音频放大器

这个是贴片LM4889组成的音频放大电路。SOP8封装十分小巧,原理图如下:

改变R33可以调节音量,我设计时就想发个声音,上去后好用是好用。但就是有点振人。

以下是PCB板的截图:

就用了一面板就可以。