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标题:
压电式耳机矿石收音机电路
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作者:
liyf
时间:
2011-6-3 13:24
标题:
压电式耳机矿石收音机电路
压电式耳机矿石收音机电路,收音时,用C2进行调谐,天线接在A2上,可以改善选择性.
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