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Webエルマクリーン検電器は、電磁波(電場)の発生源に近づけると、音と光でお知らせします。 対象機器と検知者との電位差を検知する仕組みに ... WebDec 25, 2015 · 电压5v,串联220欧电阻,所以电流是5-3=2v 2v/220欧=9毫安左右,为了方便,按10毫安算。 你的led灯珠应该是dip灯珠,设计电流是10毫安。 1:不同颜色的led,额定电压是不同的,蓝,白,绿可以按3v算,红,黄按2v算。 2:电源电压5v,所以如果是蓝,白,绿,你只能n并。 bugclub.co.uk reading
LV-5 Stray Voltage Detector from HD Electric Utility Products
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