搜索 - 科创

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圆圈里面不连在一起，前面那个555构成一个假三角波发生器（由3脚高低电平控制C3的充放电），幅值在三分之一PVCC至三分之二PVCC之间，频率由R1、RP1和C3决定后面那个555好像是构成单稳态电路...

duanyz 发表于 2013-9-17 19:31 求artcam文件和刀路学习下其实artcam是个浮雕软件，出刀路后用cnc运行，我用的是mach3 做pcb还是转印正统些，用这个只是试验一下简...

引用 fuwen0202:ickey有50块钱特价的时候找ickey，没有特价的时候找华强pcb。。。捷配寄礼品过来的话就找捷多邦，顺易捷偶尔也打打。。ickey的品质是最好的，其他几家差不多。。至于...

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