搜索 - 科创

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在上期的视频中，我制作了一款中波直采的SDR收音机，结构简陋，并未进行过多的滤波处理，噪音较大，在后面的一段时间里我一直尝试降噪处理，虽尚未达到理想目标，但已有初步成效。***************...

0x00 题外见到各种电子设备，总想拆开外壳看一下，要是电路板上还预留有rx,tx,gnd,vcc，又想着是不是可以刷个机、换个固件，看到废旧设备，也总少不了拆机寻宝，看到论坛各位大神DIY：心想，我...

做得不错。输入用仪表应该还考虑到了需要较高输入阻抗吧。 50Hz为什么不考虑用notch filter呢？是有什么考虑吗？最后，是不是要考虑一下ESD的问题？我们实验室常用AD8421（一片...

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