開關電源與線性電源使用接線端子的區別!
開關(guan)電源(yuan)的(de)(de)調整(zheng)管工作在飽和和截至狀態(tai),因而(er)發熱量小,效(xiao)率高(gao)(75%以(yi)上)而(er)且省掉了大體積的(de)(de)變壓器。但開關(guan)電(dian)(dian)源(yuan)輸出(chu)的(de)(de)直流上面會疊加(jia)(jia)較大的(de)(de)紋波(bo)(50mvat5voutputtypical),在輸出(chu)端(duan)并接(jie)(jie)穩壓二極管可以(yi)改善,另外由于(yu)開關(guan)管工作是(shi)會產生(sheng)很大的(de)(de)尖峰脈沖干擾,也需要(yao)(yao)在電(dian)(dian)路中串連(lian)磁(ci)珠加(jia)(jia)以(yi)改善。相對而(er)言線性電(dian)(dian)源(yuan)就(jiu)沒有以(yi)上缺陷(xian),它的(de)(de)紋波(bo)可以(yi)做的(de)(de)很小(5mv以(yi)下(xia)),對于(yu)開關(guan)電(dian)(dian)源(yuan)主要(yao)(yao)使用(yong)的(de)(de)接(jie)(jie)線端(duan)子是(shi)柵欄式接(jie)(jie)線端(duan)子,如9500,825,611等端(duan)子。
對(dui)(dui)于電(dian)(dian)(dian)(dian)源(yuan)(yuan)效率和安(an)裝(zhuang)體積(ji)有要求的(de)地(di)方用(yong)開關(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)為佳,對(dui)(dui)于電(dian)(dian)(dian)(dian)磁干擾和電(dian)(dian)(dian)(dian)源(yuan)(yuan)純凈(jing)性有要求的(de)地(di)方(例如電(dian)(dian)(dian)(dian)容漏(lou)電(dian)(dian)(dian)(dian)檢(jian)測)多(duo)選(xuan)用(yong)線性電(dian)(dian)(dian)(dian)源(yuan)(yuan)。另外(wai)當(dang)電(dian)(dian)(dian)(dian)路中(zhong)需要作隔(ge)離的(de)時候現(xian)在(zai)多(duo)數用(yong)dc-dc來(lai)做對(dui)(dui)隔(ge)離部分供電(dian)(dian)(dian)(dian)(dc-dc從其工作原(yuan)理上(shang)來(lai)說就(jiu)是開關(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan))。還(huan)有,開關(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)中(zhong)用(yong)到(dao)的(de)高頻變壓(ya)器可能繞制起來(lai)比較(jiao)麻煩(fan)。
線(xian)(xian)性(xing)電源,穩壓器(qi)的調整(zheng)管(guan)工作在放大(da)狀態,因而(er)發熱量大(da),效率低(35%左右),需(xu)要(yao)加(jia)體積龐大(da)的散熱片,而(er)且還需(xu)要(yao)同樣(yang)也是大(da)體積的工頻(pin)變壓器(qi),當要(yao)制作多組電壓輸出(chu)時(shi)變壓器(qi)會(hui)更龐大(da),就接(jie)線(xian)(xian)端子的使(shi)用情況而(er)言,線(xian)(xian)性(xing)電源主要(yao)使(shi)用的連接(jie)器(qi)如(ru)XH2.54端子等(deng)。
以上(shang)資料整理來源(yuan)自網絡!(對文中陳述(shu)、觀(guan)點(dian)判(pan)斷保(bao)持(chi)中立,不對所包含(han)內容(rong)的準確(que)性、可靠(kao)性或完整性提供任何明示(shi)或暗(an)示(shi)的保(bao)證。)
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