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20 天
过温保护电路的电路组成及优缺点
请教一下这个光电开关是属于哪一类? 三极管类 上图的焦点不对,无法看清。 注意下图中U型器件,如果两边都有管脚,凹槽中对应位置有开孔或窗口,那说明是对射遮挡型红外传感器。 PIC 8位单片机具有指令少、执行速度快等优点,其主要原因是PIC系列单片机 ...
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