線(xian)(xian)性電(dian)源(yuan)的電(dian)壓反饋電(dian)路(lu)是(shi)工作(zuo)在線(xian)(xian)性(放大(da))狀態，開關電(dian)源(yuan)是(shi)指用于電(dian)壓調整的管子工作(zuo)在飽和和截止(zhi)區，即開關狀態的。

線性電(dian)(dian)源(yuan)一般是(shi)將(jiang)輸(shu)(shu)出電(dian)(dian)壓(ya)取樣然后與參考電(dian)(dian)壓(ya)送入(ru)比較電(dian)(dian)壓(ya)放(fang)大器，此(ci)電(dian)(dian)壓(ya)放(fang)大器的(de)(de)(de)(de)輸(shu)(shu)出作(zuo)為電(dian)(dian)壓(ya)調整管(guan)的(de)(de)(de)(de)輸(shu)(shu)入(ru)，用以(yi)控制(zhi)調整管(guan)使其結電(dian)(dian)壓(ya)隨輸(shu)(shu)入(ru)的(de)(de)(de)(de)變化而變化，從而調整其輸(shu)(shu)出電(dian)(dian)壓(ya)，但開關(guan)(guan)電(dian)(dian)源(yuan)是(shi)通(tong)過(guo)改變調整管(guan)的(de)(de)(de)(de)開和關(guan)(guan)的(de)(de)(de)(de)時(shi)間即改變占空比來改變輸(shu)(shu)出電(dian)(dian)壓(ya)的(de)(de)(de)(de)！

從(cong)其主要特點(dian)上(shang)看：線(xian)性(xing)電(dian)(dian)源(yuan)技術很(hen)成(cheng)(cheng)熟，制(zhi)作(zuo)成(cheng)(cheng)本(ben)較(jiao)(jiao)低(di)，可以達到很(hen)高(gao)的(de)穩定度，波紋較(jiao)(jiao)小(xiao)，自身的(de)干(gan)擾(rao)和噪(zao)聲(sheng)都(dou)比(bi)較(jiao)(jiao)小(xiao)，但(dan)因(yin)為(wei)工作(zuo)在(zai)(zai)工頻(50Hz),變壓器的(de)體(ti)(ti)積(ji)比(bi)較(jiao)(jiao)大,效(xiao)率(lv)(lv)偏低(di)(一般滿載工作(zuo)的(de)效(xiao)率(lv)(lv)只有80%左右)整體(ti)(ti)體(ti)(ti)積(ji)較(jiao)(jiao)大，顯得較(jiao)(jiao)笨重.且輸入電(dian)(dian)壓范(fan)圍要求高(gao)；而開關電(dian)(dian)源(yuan)是(shi)工作(zuo)的(de)高(gao)頻狀態,變壓器的(de)體(ti)(ti)積(ji)比(bi)較(jiao)(jiao)小(xiao),相對比(bi)較(jiao)(jiao)輕便,但(dan)是(shi)輸出紋波較(jiao)(jiao)線(xian)性(xing)電(dian)(dian)源(yuan)要大,但(dan)因(yin)結(jie)構簡單(dan),成(cheng)(cheng)本(ben)低(di),效(xiao)率(lv)(lv)高(gao)(市面上(shang)的(de)開關電(dian)(dian)源(yuan)的(de)效(xiao)率(lv)(lv)也可達90%以上(shang))在(zai)(zai)很(hen)多場合已經替(ti)代了線(xian)性(xing)電(dian)(dian)源(yuan),是(shi)未(wei)來電(dian)(dian)源(yuan)發展的(de)趨勢。

線性電源(yuan)，可控硅電源(yuan)，開關電源(yuan)電路(lu)的(de)簡(jian)單比較

關于電(dian)(dian)(dian)路結(jie)構，究竟是線性(xing)電(dian)(dian)(dian)源(yuan)(yuan)，可(ke)控硅電(dian)(dian)(dian)源(yuan)(yuan)還是開關電(dian)(dian)(dian)源(yuan)(yuan)，要看具體場合(he)，合(he)理采用(yong)(yong)。這三(san)種電(dian)(dian)(dian)路，國際(ji)國內都大量使用(yong)(yong)，各(ge)有(you)各(ge)的(de)(de)特點(dian)。可(ke)控硅電(dian)(dian)(dian)源(yuan)(yuan)，以其(qi)強大的(de)(de)輸(shu)出功率，使線性(xing)電(dian)(dian)(dian)源(yuan)(yuan)和(he)開關電(dian)(dian)(dian)源(yuan)(yuan)無法取(qu)代。線性(xing)電(dian)(dian)(dian)源(yuan)(yuan)以其(qi)精度(du)高，性(xing)能優越而被廣(guang)泛應(ying)用(yong)(yong)。開關電(dian)(dian)(dian)源(yuan)(yuan)因省去了笨重的(de)(de)工頻變壓器而使體積和(he)重量都有(you)不同程度(du)的(de)(de)減少，減輕，也被廣(guang)泛地應(ying)用(yong)(yong)在許多輸(shu)出電(dian)(dian)(dian)壓、輸(shu)出電(dian)(dian)(dian)流較為穩定的(de)(de)場合(he)。

電纜(lan)故(gu)障（測(ce)試儀/檢測(ce)儀/定位(wei)儀/定點儀/測(ce)距儀）地埋電纜(lan)故(gu)障定位(wei)檢測(ce)服(fu)務廠家-光大百(bai)納