20 gain amplifier circuit composed of LM386
Source: InternetPublisher:明天见 Updated: 2010/04/09
![由LM386组成的20增益放大电路](http://www.eeworld.com.cn/circuit/upload/538a1bc8a409ff500dc8e0cb6c6d7ecb/10cd96dc-3c64-11ec-a5f1-086126841eb8.jpg)
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