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BD2MB:我怎么看着说明书的话筒电路有问题,应该是下面的电路才对啊。[图片] (2012-10-17 16:48)
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BD2MB:两个话筒电路都试过了,一个是正极供电,一个是负极供电,都正确。 (2012-10-18 14:25)
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