WebDec 1, 2011 · 1、 工作温度:-40℃~150℃,结温160℃ 2、 工作电流:200MA~2000MA,脉冲可达4000MA(t≤10tcs),相当于8.6W 3、 工作电压:2.9V~3.5V~4.3V 4、 光通量:4档选择(150~180~210~240~280LM),1400MA时可达150LM~280LM,平均可 … WebMay 10, 2024 · In order to reduce crosstalk between lines in PCB design, the 3W principle should ensure that the line spacing is large enough. When the line center spacing is not less than 3 times the line width, most of the electric fields can be kept from interfering with each other. This is the 3W rule. The 3W principle means that when multiple high-speed signal …
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WebMay 6, 2024 · Voltage = Current x Resistance. Resistance = Voltage/Current. The basic power formula is: Power (Watts) = Voltage x Current. And, if you know Ohm's Law, you can get: P = V2/Impedance (This one is handy for amplifiers & speakers.) P = I 2 x Resistance. DVDdoug January 30, 2016, 4:41pm 4. If good sound doesn't matter, and it is a common … WebMay 2, 2024 · 3w20h规则 3w原则: 这里3w是线与线之间的距离保持3倍线宽。你说3h也可以。但是这里h指的是线宽度。不是介质厚度。是为了减少线间串扰,应保证线间距足够大,如果线中心距不少于3倍线宽时,则可保持70%的线间电场不互相干扰,称为3w规则。 personalized sweatshirts under $20
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Web什么是3W原则? 在PCB设计中为了减少线间串扰,应保证线间距足够大,当线中心间距不少于3倍线宽时,则可保持大部分电场不互相干扰,这就是3W规则。 如下 图 1 所示,并不 … Web什么是3W原则? 在PCB设计中为了减少线间串扰,应保证线间距足够大,当线中心间距不少于3倍线宽时,则可保持大部分电场不互相干扰,这就是3W规则。 如下 图 1 所示,并不是板上所有的布线都要强制符合3W原 … WebMay 10, 2024 · Let w=1/3; 3w = 1; odd number but w is NOT an integer. Let w=1; 3w =3; odd number and w is an integer. NOT SUFFICIENT. (2) 2w is an even number. w may be even or odd number but MUST be an integer. SUFFICIENT. personalized swim bags for girls