一、什(shen)么是(shi)弱電(dian)(dian)(dian)(dian)？   弱電(dian)(dian)(dian)(dian)一般(ban)是(shi)指直(zhi)流電(dian)(dian)(dian)(dian)路(lu)(lu)或音頻、視(shi)(shi)頻線路(lu)(lu)、網絡線路(lu)(lu)、電(dian)(dian)(dian)(dian)話(hua)線路(lu)(lu)，直(zhi)流電(dian)(dian)(dian)(dian)壓一般(ban)在32V以(yi)內。家(jia)用電(dian)(dian)(dian)(dian)氣(qi)中的電(dian)(dian)(dian)(dian)話(hua)、電(dian)(dian)(dian)(dian)腦、電(dian)(dian)(dian)(dian)視(shi)(shi)機的信號(hao)輸入（有線電(dian)(dian)(dian)(dian)視(shi)(shi)線路(lu)(lu)）、音響設備（輸出端線路(lu)(lu)）等用電(dian)(dian)(dian)(dian)器(qi)均為弱電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)氣(qi)設備。

二、什么是(shi)強(qiang)(qiang)電？   強(qiang)(qiang)電指電工領域的電力(li)部分。特點是(shi)功率大、電流大、頻率低，主(zhu)要考慮(lv)損耗小、效率高的問題。和弱電的關系很(hen)密(mi)切，與(yu)“弱電”相對。   三、二者(zhe)有何區別   強(qiang)(qiang)電和弱電主(zhu)要區別是(shi)用(yong)途的不同。強(qiang)(qiang)電是(shi)用(yong)作一(yi)種動力(li)能(neng)源，弱電是(shi)用(yong)于信息(xi)傳遞。

強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)和(he)弱電(dian)(dian)(dian)(dian)(dian)(dian)從概念上(shang)講，一般(ban)是(shi)容(rong)易區(qu)(qu)別的(de)(de)(de)(de)(de)(de)(de)，主(zhu)(zhu)要(yao)區(qu)(qu)別是(shi)用(yong)途的(de)(de)(de)(de)(de)(de)(de)不同。強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)是(shi)用(yong)作一種(zhong)動力(li)能(neng)源，弱電(dian)(dian)(dian)(dian)(dian)(dian)是(shi)用(yong)于信(xin)息(xi)傳(chuan)遞(di)。家(jia)庭電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)分為(wei)(wei)(wei)(wei)強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)和(he)弱電(dian)(dian)(dian)(dian)(dian)(dian)。在電(dian)(dian)(dian)(dian)(dian)(dian)力(li)系統中(zhong)，36V以下的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)稱為(wei)(wei)(wei)(wei)安(an)全電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，1kV以下的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)稱為(wei)(wei)(wei)(wei)低(di)壓(ya)(ya)，1kV以上(shang)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)稱為(wei)(wei)(wei)(wei)高(gao)壓(ya)(ya)，直接供電(dian)(dian)(dian)(dian)(dian)(dian)給用(yong)戶(hu)的(de)(de)(de)(de)(de)(de)(de)線路(lu)稱為(wei)(wei)(wei)(wei)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)線路(lu)，如用(yong)戶(hu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)為(wei)(wei)(wei)(wei)380/220V，則(ze)稱為(wei)(wei)(wei)(wei)低(di)壓(ya)(ya)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)線路(lu)，也就是(shi)家(jia)庭裝修中(zhong)所說的(de)(de)(de)(de)(de)(de)(de)強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)。   強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)與(yu)弱電(dian)(dian)(dian)(dian)(dian)(dian)是(shi)相對的(de)(de)(de)(de)(de)(de)(de)概念，從概念上(shang)講，主(zhu)(zhu)要(yao)區(qu)(qu)別是(shi)用(yong)途的(de)(de)(de)(de)(de)(de)(de)不同，而不能(neng)單(dan)純的(de)(de)(de)(de)(de)(de)(de)以電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)大小(xiao)來界定兩者關系(如果非要(yao)指定用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)區(qu)(qu)分的(de)(de)(de)(de)(de)(de)(de)話，那就把36V(人體(ti)安(an)全電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya))以上(shang)劃定為(wei)(wei)(wei)(wei)強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian), 36V(人體(ti)安(an)全電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya))以下為(wei)(wei)(wei)(wei)劃定為(wei)(wei)(wei)(wei)弱電(dian)(dian)(dian)(dian)(dian)(dian)。) ，兩者既有聯系又有區(qu)(qu)別，一般(ban)區(qu)(qu)分原(yuan)則(ze)是(shi)：強(qiang)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)處理對象(xiang)是(shi)能(neng)源（電(dian)(dian)(dian)(dian)(dian)(dian)力(li)），其(qi)特點(dian)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)高(gao)、電(dian)(dian)(dian)(dian)(dian)(dian)流大、功率大、頻(pin)率低(di)，主(zhu)(zhu)要(yao)考慮的(de)(de)(de)(de)(de)(de)(de)問題是(shi)減少損耗、提高(gao)效率，弱電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)處理對象(xiang)主(zhu)(zhu)要(yao)是(shi)信(xin)息(xi)，即信(xin)息(xi)的(de)(de)(de)(de)(de)(de)(de)傳(chuan)送和(he)控(kong)制(zhi)，其(qi)特點(dian)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)低(di)、電(dian)(dian)(dian)(dian)(dian)(dian)流小(xiao)、功率小(xiao)、頻(pin)率高(gao)，主(zhu)(zhu)要(yao)考慮的(de)(de)(de)(de)(de)(de)(de)是(shi)信(xin)息(xi)傳(chuan)送的(de)(de)(de)(de)(de)(de)(de)效果問題，如信(xin)息(xi)傳(chuan)送的(de)(de)(de)(de)(de)(de)(de)保(bao)真度(du)、速度(du)、廣度(du)、可靠性。

它們大致有(you)如下區別：

（1）交流頻(pin)(pin)率不(bu)同  強電的頻(pin)(pin)率一般是50Hz（赫），稱“工(gong)頻(pin)(pin)”，意即工(gong)業用電的頻(pin)(pin)率：弱電的頻(pin)(pin)率往往是高(gao)(gao)頻(pin)(pin)或(huo)特高(gao)(gao)頻(pin)(pin)，以kHz（千赫）、MHz（兆赫）計。

（2）傳輸(shu)(shu)(shu)方(fang)式不(bu)同  強(qiang)(qiang)電(dian)(dian)(dian)以輸(shu)(shu)(shu)電(dian)(dian)(dian)線路(lu)傳輸(shu)(shu)(shu)，弱電(dian)(dian)(dian)的(de)傳輸(shu)(shu)(shu)有有線與無(wu)線之分。無(wu)線電(dian)(dian)(dian)則以電(dian)(dian)(dian)磁(ci)波傳輸(shu)(shu)(shu)。   （3）功(gong)率、電(dian)(dian)(dian)壓(ya)及電(dian)(dian)(dian)流大小不(bu)同  強(qiang)(qiang)電(dian)(dian)(dian)功(gong)率以kW（千(qian)(qian)瓦(wa)）、MW（兆瓦(wa)）計(ji)、電(dian)(dian)(dian)壓(ya)以V（伏）、kV（千(qian)(qian)伏）計(ji)，電(dian)(dian)(dian)流以A（安(an)）、kA（千(qian)(qian)安(an)）計(ji)；弱電(dian)(dian)(dian)功(gong)率以W（瓦(wa)）、mW（毫(hao)瓦(wa)）計(ji)，電(dian)(dian)(dian)壓(ya)以V（伏）、mV（毫(hao)伏）計(ji)，電(dian)(dian)(dian)流以mA（毫(hao)安(an)）、uA（微(wei)安(an)）計(ji)，因而其電(dian)(dian)(dian)路(lu)可以用(yong)印刷電(dian)(dian)(dian)路(lu)或集成電(dian)(dian)(dian)路(lu)構成。