1606-XLS240美國AB羅克韋爾開關電源公司現貨的詳細資料：

美國AB羅克韋爾開關電源公司現貨

AB羅克韋爾(er)開(kai)關電源主要特點

1、體(ti)積小、重(zhong)量輕：由于沒有工頻變壓器，所以體(ti)積和重(zhong)量只有線(xian)性電源的20～30%。

2、功耗小(xiao)、效(xiao)(xiao)率(lv)(lv)高(gao)：功率(lv)(lv)晶體管工作在開關狀態，所以晶體管上(shang)的(de)功耗小(xiao)，轉 化(hua)效(xiao)(xiao)率(lv)(lv)高(gao)，一般(ban)為60～70%，而(er)線性電電源(yuan)只有30～40%。 [1] 

3、結(jie)構簡(jian)單、可靠性高：維修(xiu)方便，電流(liu)紋(wen)波率可以很容(rong)易的做到(dao)比較低。

工作模式編輯 播報

開關電源及電路圖

開關電源及電路圖

顧(gu)名思義，開關(guan)(guan)電(dian)源就是利用電(dian)子(zi)開關(guan)(guan)器件(jian)（如(ru)晶體管、場效應(ying)管、可控(kong)硅(gui)閘流管等），通(tong)過控(kong)制電(dian)路，使電(dian)子(zi)開關(guan)(guan)器件(jian)不停地“接通(tong)"和“關(guan)(guan)斷"，讓電(dian)子(zi)開關(guan)(guan)器件(jian)對輸(shu)(shu)入(ru)電(dian)壓(ya)進行(xing)脈沖(chong)調(diao)制，從而實現DC/AC、DC/DC電(dian)壓(ya)變換，以(yi)及輸(shu)(shu)出電(dian)壓(ya)可調(diao)和自動穩壓(ya)。

開(kai)關(guan)(guan)電(dian)(dian)(dian)源(yuan)一般有三(san)種(zhong)工(gong)作模(mo)(mo)(mo)(mo)式(shi)(shi)(shi)：頻率(lv)、脈沖(chong)寬度(du)(du)固(gu)定模(mo)(mo)(mo)(mo)式(shi)(shi)(shi)，頻率(lv)固(gu)定、脈沖(chong)寬度(du)(du)可(ke)(ke)變(bian)(bian)(bian)模(mo)(mo)(mo)(mo)式(shi)(shi)(shi)，頻率(lv)、脈沖(chong)寬度(du)(du)可(ke)(ke)變(bian)(bian)(bian)模(mo)(mo)(mo)(mo)式(shi)(shi)(shi)。前一種(zhong)工(gong)作模(mo)(mo)(mo)(mo)式(shi)(shi)(shi)多用(yong)(yong)于(yu)DC/AC逆(ni)變(bian)(bian)(bian)電(dian)(dian)(dian)源(yuan)，或(huo)DC/DC電(dian)(dian)(dian)壓(ya)變(bian)(bian)(bian)換；后(hou)兩種(zhong)工(gong)作模(mo)(mo)(mo)(mo)式(shi)(shi)(shi)多用(yong)(yong)于(yu)開(kai)關(guan)(guan)穩(wen)壓(ya)電(dian)(dian)(dian)源(yuan)。另(ling)外，開(kai)關(guan)(guan)電(dian)(dian)(dian)源(yuan)輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)也有三(san)種(zhong)工(gong)作方(fang)式(shi)(shi)(shi)：直(zhi)接輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)方(fang)式(shi)(shi)(shi)、平均值輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)方(fang)式(shi)(shi)(shi)、幅值輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)壓(ya)方(fang)式(shi)(shi)(shi)。同樣，前一種(zhong)工(gong)作方(fang)式(shi)(shi)(shi)多用(yong)(yong)于(yu)DC/AC逆(ni)變(bian)(bian)(bian)電(dian)(dian)(dian)源(yuan)，或(huo)DC/DC電(dian)(dian)(dian)壓(ya)變(bian)(bian)(bian)換；后(hou)兩種(zhong)工(gong)作方(fang)式(shi)(shi)(shi)多用(yong)(yong)于(yu)開(kai)關(guan)(guan)穩(wen)壓(ya)電(dian)(dian)(dian)源(yuan)。

根(gen)據(ju)開關器件在電(dian)路中連(lian)接(jie)的方式(shi)，開關電(dian)源(yuan)，大體上可分(fen)(fen)為：串聯式(shi)開關電(dian)源(yuan)、并聯式(shi)開關電(dian)源(yuan)、變壓器式(shi)開關電(dian)源(yuan)等三大類(lei)。其中，變壓器式(shi)開關電(dian)源(yuan)（后面簡稱(cheng)變壓器開關電(dian)源(yuan)）還可以進(jin)一步(bu)分(fen)(fen)成(cheng)：推(tui)挽式(shi)、半橋(qiao)式(shi)、全(quan)橋(qiao)式(shi)等多(duo)種(zhong)；根(gen)據(ju)變壓器的激(ji)勵和(he)輸出電(dian)壓的相位，又可以分(fen)(fen)成(cheng)：正激(ji)式(shi)、反激(ji)式(shi)、單激(ji)式(shi)和(he)雙(shuang)激(ji)式(shi)等多(duo)種(zhong)；如(ru)果從(cong)用(yong)途上來分(fen)(fen)，還可以分(fen)(fen)成(cheng)更多(duo)種(zhong)類(lei)。

美國AB羅克韋爾開關電源公司現貨

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