Precise variable frequency oscillator
Source: InternetPublisher:闪电杰克 Updated: 2014/05/29
![精确的可变频率振荡器](http://www.eeworld.com.cn/circuit/upload/538a1bc8a409ff500dc8e0cb6c6d7ecb/fe74aa54-3c63-11ec-8961-086126841eb8.jpg)
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