Led chip scrap

相关推荐

• 关于食人鱼led的构成食人鱼系列,草帽系列,穿孔灯系列,等等,的所以型号,规格,要用什么材料组成.举个例子；产品名称,三灯食人鱼模组红光（7512）,要红光灯珠3个,一个7512三株线路板,还要什么电阻,什么什么的····都帮我列出来,
• 请问什么是upper and lower memory chip?如何翻译?谢谢了.
• 英语翻译3.He proudly claimed in court that despite his complete lack of medical experience or qualifications,he had saved several people's lives.4.The scientist's next research job was clear:Find out what in the fish's blood kept it from freezing.Their search led to some really strange thing made up of a protein never before seen in the blood of a fish.5.They were surprised to find that the harmful effect of given amount of physical effort was actually le
• 手机电池 3.7V 接一个 LED 3.2V 用 25欧电阻降压,降压后LED可以正常点亮,降压后 测量还是3.7V为什么?
• 食人鱼LED是什么意思?
• 第一问：Then man【tried out】 several 【means】 to have those people get across what he said.请问这里的tried out和means分别是什么意思?=第二问：It's obvious that her refusing to see a doctor has ____(led in/resulted in) her illness woresening.请问led in没有导致,造成的意思吗?为什么答案是result in?=第三问：It's nice to see millions who had nothing but 【a record of】 misery and hungry _____（have/to have) the chance to improve their life and livig conditions.①请解释黑框中的a record of应该怎么理解.②请问为何横线处只能用have?我脑子
• 我想用手机电池（3.7v）点亮20个led（3V20ma）led采用并联,要一个多大的电阻或者点亮一个用多大的电阻
• 1W的LED灯150MA电流得光通量是多少 光通量与电流有什么关系
• DC12V 1A的电源,接了192颗LED草帽灯,接法是3灯串一120电阻,灯的参数写的是IR:0.01ma VF:3.2-3.4V我想知道这组灯亮起来是多少W?请提供计算公式,你是怎么算出来的?我是新手,请解答的时候能详细些,谢谢经万用表测量,每一组（三个灯加一个电阻）的电流是17.6MA
• 关于LED串联电阻的3个问题!1. LED为什么要串联电阻? 2.串联电阻的阻值如何选? 3.LED在串联电阻后明显变暗,能不能将电阻去掉?后果是什么? 请高手回答下,按题号回答 谢谢!
• The police caught the thief who b___into the supermarket.
• mechanical joint是什么意思