弱電：弱電是很常見的幾乎所有的電子產品中都存在弱電，相對于強電而言，弱電是指傳遞(di)信號(hao)所需要的(de)電(dian)(dian)流和電(dian)(dian)壓(ya)，弱電(dian)(dian)特點是電(dian)(dian)流小(xiao)，頻率高，電(dian)(dian)壓(ya)小(xiao)。比如(ru)說單片(pian)機引腳里(li)出來的(de)電(dian)(dian)壓(ya)，電(dian)(dian)流都(dou)很小(xiao)，是用來進(jin)行信號(hao)處理的(de)這就是弱電(dian)(dian)。

強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)：強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)一般(ban)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)系(xi)統中的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，比(bi)如說220v的(de)照明電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，以(yi)及(ji)1000多v的(de)工業用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)等，強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)特點是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓高，頻率(lv)低(di)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流大，強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)是用來驅動大功率(lv)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)設(she)備的(de)。比(bi)如說電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)燈等用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)設(she)備。