搜索 - 科创

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那现在用下另一种方法证明以上的结论我们还是用复数法证下。由上一个结论，对某一频率的波模，我们可以设：\(u_\omega = A_{\omega,+} cos(\omega t -kx+ \phi_{...

电路功能：左边的插座可以为蓄电池补充电力，右边输出5V的直流电供IPhone充电。若在野外没有电，则使用太阳能电池板对蓄电池充电。原件极为普通，却能实现强大的功能。本电路是第二代的升级版，可以在2.1...

昨天black提到PCB导热问题。铝基板有双面pcb的，价格比较贵。用极薄的PCB可以实现类似效果。再不行可以用氧化铝基板。关于FPGA，可以选择Actel的产品。抗干扰没问题，最小封装QFN48。另...

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