按(an)電(dian)(dian)源(yuan)(yuan)(yuan)模(mo)(mo)塊(kuai)(kuai)(kuai)封(feng)裝(zhuang)(zhuang)形式(shi)(shi)分：AC-DC模(mo)(mo)塊(kuai)(kuai)(kuai)電(dian)(dian)源(yuan)(yuan)(yuan)主(zhu)要分為(wei)裸板式(shi)(shi)電(dian)(dian)源(yuan)(yuan)(yuan)、臥式(shi)(shi)封(feng)裝(zhuang)(zhuang)電(dian)(dian)源(yuan)(yuan)(yuan)和導(dao)軌式(shi)(shi)封(feng)裝(zhuang)(zhuang)電(dian)(dian)源(yuan)(yuan)(yuan)。DC-DC模(mo)(mo)塊(kuai)(kuai)(kuai)電(dian)(dian)源(yuan)(yuan)(yuan)主(zhu)要分為(wei)貼片封(feng)裝(zhuang)(zhuang)、單列直插(cha)式(shi)(shi)封(feng)裝(zhuang)(zhuang)、雙(shuang)列直插(cha)式(shi)(shi)封(feng)裝(zhuang)(zhuang)、導(dao)軌電(dian)(dian)源(yuan)(yuan)(yuan)及磚(zhuan)電(dian)(dian)源(yuan)(yuan)(yuan)模(mo)(mo)塊(kuai)(kuai)(kuai)。一(yi)般(ban)電(dian)(dian)源(yuan)(yuan)(yuan)模(mo)(mo)塊(kuai)(kuai)(kuai)是(shi)指(zhi)將所有功(gong)能封(feng)閉在一(yi)個模(mo)(mo)塊(kuai)(kuai)(kuai)化(hua)產(chan)品中，體積小、可(ke)靠性高(gao)、使(shi)用(yong)(yong)(yong)方便。不只便于更換(huan)，同時(shi)還(huan)具有防(fang)(fang)水、防(fang)(fang)塵、防(fang)(fang)潮(chao)、防(fang)(fang)震、阻燃等特點，還(huan)有一(yi)些產(chan)品可(ke)進行冗余供(gong)電(dian)(dian)。電(dian)(dian)源(yuan)(yuan)(yuan)模(mo)(mo)塊(kuai)(kuai)(kuai)雖然種類(lei)很多(duo)，但多(duo)數是(shi)采用(yong)(yong)(yong)開關電(dian)(dian)源(yuan)(yuan)(yuan)設計，主(zhu)要的(de)(de)目的(de)(de)還(huan)是(shi)為(wei)了減輕重量和減小體積。與普通電(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)作用(yong)(yong)(yong)差不多(duo)，只不過在功(gong)能上會多(duo)了一(yi)點及功(gong)率密度很高(gao)。acdc模(mo)(mo)塊(kuai)(kuai)(kuai)電(dian)(dian)源(yuan)(yuan)(yuan)能夠實(shi)現均勻分配(pei)負載，延(yan)長了模(mo)(mo)塊(kuai)(kuai)(kuai)的(de)(de)使(shi)用(yong)(yong)(yong)壽命。虹口(kou)區ACDC電(dian)(dian)源(yuan)(yuan)(yuan)模(mo)(mo)塊(kuai)(kuai)(kuai)工廠

現如今中(zhong)國(guo)內地(di)絕大多數的(de)(de)(de)ac-dc電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)并聯(lian)輸(shu)(shu)出(chu)設計(ji)方案，都(dou)應(ying)用了有(you)源(yuan)(yuan)(yuan)(yuan)法(fa)(fa)。這類方式選用均(jun)(jun)流(liu)(liu)(liu)(liu)(liu)母(mu)(mu)線(xian)(xian)(xian)方法(fa)(fa)，各ac-dc電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)相(xiang)互間存有(you)互相(xiang)相(xiang)關聯(lian)，根據采樣(yang)每個ac-dc電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)輸(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)開(kai)展較(jiao)為(wei)(wei)(wei)從而(er)調節(jie)每個ac-dc電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)輸(shu)(shu)出(chu)工作電(dian)(dian)(dian)(dian)(dian)壓的(de)(de)(de)方法(fa)(fa)完(wan)成均(jun)(jun)流(liu)(liu)(liu)(liu)(liu)，具備高效(xiao)率的(de)(de)(de)優(you)勢。根據均(jun)(jun)流(liu)(liu)(liu)(liu)(liu)母(mu)(mu)線(xian)(xian)(xian)槽產生方法(fa)(fa)和(he)(he)調整(zheng)操縱方法(fa)(fa)的(de)(de)(de)不一樣(yang)有(you)源(yuan)(yuan)(yuan)(yuan)法(fa)(fa)的(de)(de)(de)主要方式有(you)12種，至(zhi)少特性不錯(cuo)、實用性極(ji)強的(de)(de)(de)是(shi)(shi)均(jun)(jun)值(zhi)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)+外(wai)環調整(zheng)法(fa)(fa)和(he)(he)較(jiao)大電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)+外(wai)環調整(zheng)法(fa)(fa)。這里人們(men)能夠(gou)根據較(jiao)大電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)+外(wai)環調整(zheng)法(fa)(fa)構思，設計(ji)構思某種均(jun)(jun)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)控系(xi)統，主要參數feedback為(wei)(wei)(wei)ac-dc電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)輸(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)抽樣(yang)，主要參數co—on為(wei)(wei)(wei)均(jun)(jun)流(liu)(liu)(liu)(liu)(liu)母(mu)(mu)線(xian)(xian)(xian)。從圖(tu)中(zhong)中(zhong)我們(men)可(ke)以看，全部ac-dc電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)輸(shu)(shu)出(chu)抽樣(yang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)能夠(gou)二(er)極(ji)管和(he)(he)均(jun)(jun)流(liu)(liu)(liu)(liu)(liu)母(mu)(mu)線(xian)(xian)(xian)聯(lian)接合在一起，因此(ci)均(jun)(jun)流(liu)(liu)(liu)(liu)(liu)母(mu)(mu)線(xian)(xian)(xian)槽標示的(de)(de)(de)自始至(zhi)終是(shi)(shi)較(jiao)大電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)。V1和(he)(he)R1、R2、R6、R7組成差(cha)(cha)分信號運放電(dian)(dian)(dian)(dian)(dian)路，其輸(shu)(shu)出(chu)為(wei)(wei)(wei)本(ben)ac-dc電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)和(he)(he)較(jiao)大電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)的(de)(de)(de)差(cha)(cha)值(zhi)。該差(cha)(cha)值(zhi)和(he)(he)基準按照1:10的(de)(de)(de)占比求(qiu)和(he)(he)做為(wei)(wei)(wei)新(xin)的(de)(de)(de)給出(chu)輸(shu)(shu)入(ru)到(dao)PI控制器中(zhong)。要是(shi)(shi)本(ben)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)的(de)(de)(de)輸(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)低于較(jiao)大電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)，差(cha)(cha)分信號電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路輸(shu)(shu)出(chu)和(he)(he)標準產生新(xin)的(de)(de)(de)給出(chu)將使本(ben)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)(liang)擴(kuo)大福建ACDC電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)(mo)(mo)塊(kuai)(kuai)供應(ying)商AC/DC開(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)AC是(shi)(shi)交流(liu)(liu)(liu)(liu)(liu)，DC是(shi)(shi)直流(liu)(liu)(liu)(liu)(liu)。

每(mei)個模(mo)塊(kuai)可以(yi)被嚴格測試，以(yi)確保高可靠(kao)性(xing)，包括功率測試中，為(wei)(wei)了分別(bie)消(xiao)除不(bu)合格產品。與(yu)此相反，集(ji)(ji)成的(de)解(jie)(jie)決(jue)方(fang)案將(jiang)(jiang)是(shi)測試更困難，因為(wei)(wei)整個電(dian)(dian)源系統的(de)電(dian)(dian)路與(yu)該系統的(de)其它功能緊密(mi)接(jie)觸(chu)在一起。不(bu)同的(de)供應商管理可以(yi)通過按照(zhao)現(xian)(xian)有的(de)技術發展(zhan)標(biao)準進(jin)(jin)行(xing)設計同一大(da)小的(de)模(mo)塊(kuai)，為(wei)(wei)設計電(dian)(dian)源供應器(qi)的(de)工程(cheng)師提供多種方(fang)式(shi)不(bu)同的(de)選擇。各(ge)模(mo)塊(kuai)的(de)設計和測試都是(shi)按照(zhao)規定(ding)的(de)標(biao)準進(jin)(jin)行(xing)，有利于降低使用(yong)(yong)新(xin)技術來承擔的(de)風險。若采用(yong)(yong)集(ji)(ji)成式(shi)的(de)解(jie)(jie)決(jue)中國方(fang)案，一旦電(dian)(dian)源供應管理系統發展(zhan)出現(xian)(xian)一些問題，便需要將(jiang)(jiang)整塊(kuai)主機(ji)板更換(huan)；若采用(yong)(yong)不(bu)同模(mo)塊(kuai)式(shi)的(de)設計，只要將(jiang)(jiang)這些問題分析(xi)模(mo)塊(kuai)更換(huan)便可，這樣(yang)有助節省成本及開發時(shi)間。

開(kai)(kai)關電(dian)(dian)源(yuan)的工(gong)作模(mo)(mo)式(shi)有三種(zhong)：頻(pin)(pin)率(lv)、脈沖(chong)寬(kuan)度(du)固定(ding)(ding)(ding)模(mo)(mo)式(shi)，多(duo)用(yong)于DC/AC逆(ni)(ni)變(bian)(bian)電(dian)(dian)源(yuan)，或者(zhe)DC/DC電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)變(bian)(bian)換(huan)。頻(pin)(pin)率(lv)固定(ding)(ding)(ding)、脈沖(chong)寬(kuan)度(du)可變(bian)(bian)模(mo)(mo)式(shi)，多(duo)用(yong)于開(kai)(kai)關穩壓(ya)(ya)(ya)(ya)(ya)電(dian)(dian)源(yuan)。頻(pin)(pin)率(lv)、脈沖(chong)寬(kuan)度(du)可變(bian)(bian)模(mo)(mo)式(shi)，多(duo)用(yong)于開(kai)(kai)關穩壓(ya)(ya)(ya)(ya)(ya)電(dian)(dian)源(yuan)。開(kai)(kai)關電(dian)(dian)源(yuan)輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)也有三種(zhong)工(gong)作方式(shi)：直接輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)方式(shi)，多(duo)用(yong)于DC/AC逆(ni)(ni)變(bian)(bian)電(dian)(dian)源(yuan)，或DC/DC電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)變(bian)(bian)換(huan)。平(ping)均值輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)方式(shi)，多(duo)用(yong)于開(kai)(kai)關穩壓(ya)(ya)(ya)(ya)(ya)電(dian)(dian)源(yuan)。幅值輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)方式(shi)，多(duo)用(yong)于開(kai)(kai)關穩壓(ya)(ya)(ya)(ya)(ya)電(dian)(dian)源(yuan)。造成(cheng)輸(shu)(shu)入(ru)(ru)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)過高的原(yuan)因有三種(zhong)，分別是：輸(shu)(shu)出(chu)端懸空(kong)(kong)或無負(fu)(fu)載(zai)(zai)；輸(shu)(shu)出(chu)端負(fu)(fu)載(zai)(zai)過輕，輕于10%的額定(ding)(ding)(ding)負(fu)(fu)載(zai)(zai)；輸(shu)(shu)入(ru)(ru)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)偏高或干擾(rao)(rao)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)。可以通過調整輸(shu)(shu)出(chu)端的負(fu)(fu)載(zai)(zai)或調整輸(shu)(shu)入(ru)(ru)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)范(fan)圍，確保輸(shu)(shu)出(chu)端不(bu)小于少10%的額定(ding)(ding)(ding)負(fu)(fu)載(zai)(zai)，若(ruo)實際電(dian)(dian)路工(gong)作中會有空(kong)(kong)載(zai)(zai)現象，就(jiu)在(zai)輸(shu)(shu)出(chu)端并(bing)接一個額定(ding)(ding)(ding)功率(lv)10%的假負(fu)(fu)載(zai)(zai)。更換(huan)一個合(he)理范(fan)圍的輸(shu)(shu)入(ru)(ru)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，存在(zai)干擾(rao)(rao)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)時要考(kao)慮在(zai)輸(shu)(shu)入(ru)(ru)端并(bing)上(shang)TVS管或穩壓(ya)(ya)(ya)(ya)(ya)管。直流電(dian)(dian)源(yuan)能維持兩個電(dian)(dian)極之間的恒定(ding)(ding)(ding)電(dian)(dian)勢差，從(cong)而(er)在(zai)外(wai)電(dian)(dian)路中形(xing)成(cheng)由正極到負(fu)(fu)極的恒定(ding)(ding)(ding)電(dian)(dian)流。

DC-DC轉(zhuan)換(huan)(huan)常稱作二極管(guan)整流(liu)式和(he)異步式等。和(he)上篇提到的正激(ji)(ji)體(ti)(ti)(ti)(ti)(ti)(ti)例(li)相比，因(yin)為(wei)(wei)未(wei)(wei)使用(yong)(yong)(yong)(yong)(yong)變(bian)壓器(qi)(qi)(qi)(qi)，一次側和(he)二次側并(bing)未(wei)(wei)絕緣。不需絕緣時(shi)(shi)，以不使用(yong)(yong)(yong)(yong)(yong)變(bian)壓器(qi)(qi)(qi)(qi)的該體(ti)(ti)(ti)(ti)(ti)(ti)例(li)較為(wei)(wei)簡單。Buck體(ti)(ti)(ti)(ti)(ti)(ti)例(li)不必(bi)設定(ding)變(bian)壓器(qi)(qi)(qi)(qi)調整電(dian)壓，只(zhi)要行(xing)(xing)使MOSFET控制，就可以決定(ding)輸出電(dian)壓。因(yin)此百度(du)搜索排(pai)行(xing)(xing)，未(wei)(wei)必(bi)會必(bi)要來自于二次側的反(fan)饋(kui)。Buck體(ti)(ti)(ti)(ti)(ti)(ti)例(li)的特性是(shi)(shi)電(dian)路(lu)構造簡單，組成(cheng)(cheng)小功(gong)率(lv)電(dian)源模塊(kuai)電(dian)路(lu)時(shi)(shi)，成(cheng)(cheng)本(ben)比反(fan)激(ji)(ji)式更有競(jing)爭力。因(yin)此，常使用(yong)(yong)(yong)(yong)(yong)在家電(dian)產品的微控制器(qi)(qi)(qi)(qi)用(yong)(yong)(yong)(yong)(yong)電(dian)源上。但是(shi)(shi)因(yin)為(wei)(wei)不必(bi)通過變(bian)壓器(qi)(qi)(qi)(qi)，流(liu)向開(kai)(kai)關(guan)元件(jian)的電(dian)流(liu)比采用(yong)(yong)(yong)(yong)(yong)反(fan)激(ji)(ji)體(ti)(ti)(ti)(ti)(ti)(ti)例(li)的劃一輸出功(gong)率(lv)還(huan)大，只(zhi)適(shi)用(yong)(yong)(yong)(yong)(yong)于小功(gong)率(lv)輸出百度(du)網站(zhan)排(pai)名(ming)，而(er)無(wu)法用(yong)(yong)(yong)(yong)(yong)于大功(gong)率(lv)輸出上。模式幾(ji)乎和(he)正激(ji)(ji)體(ti)(ti)(ti)(ti)(ti)(ti)例(li)雷同，只(zhi)是(shi)(shi)去掉(diao)正激(ji)(ji)體(ti)(ti)(ti)(ti)(ti)(ti)例(li)的變(bian)壓器(qi)(qi)(qi)(qi)，將D1換(huan)(huan)成(cheng)(cheng)MOSFET。MOSFET為(wei)(wei)ON時(shi)(shi)，電(dian)流(liu)經(jing)過電(dian)感(gan)流(liu)向負載(zai)(zai)端，同時(shi)(shi)電(dian)感(gan)也(ye)積蓄電(dian)能。此時(shi)(shi)，二極管(guan)為(wei)(wei)OFF。MOSFET為(wei)(wei)OFF時(shi)(shi)，積蓄在電(dian)感(gan)的電(dian)能經(jing)由二極管(guan)D2供應至負載(zai)(zai)端。和(he)正激(ji)(ji)轉(zhuan)換(huan)(huan)器(qi)(qi)(qi)(qi)的D1雷同，開(kai)(kai)啟或(huo)關(guan)閉MOSFET。設計技術及生(sheng)產工藝在國內外均已(yi)成(cheng)(cheng)熟和(he)標準化，并(bing)已(yi)得到用(yong)(yong)(yong)(yong)(yong)戶的認可。河(he)北ACDC電(dian)源模塊(kuai)生(sheng)產廠家

使得(de)解決EMC電(dian)磁兼容問題難度加大，也就對內部高(gao)密度安裝(zhuang)電(dian)路設計(ji)提出了很高(gao)的(de)要(yao)求。虹口區ACDC電(dian)源模塊工廠(chang)

AC轉換(huan)(huan)至DC的(de)(de)(de)(de)過程(cheng)和(he)工(gong)作(zuo)(zuo)狀態是(shi)一(yi)次側(ce)會(hui)直接(jie)整流(liu)(liu)(liu)——平滑(hua)100VAC，轉換(huan)(huan)成(cheng)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)DC電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)。接(jie)著使(shi)用(yong)開(kai)(kai)(kai)關(guan)元件，將高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)DC電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)轉換(huan)(huan)成(cheng)高(gao)(gao)(gao)頻(pin)的(de)(de)(de)(de)方波(bo)，再經由(you)變壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)傳(chuan)送至二(er)次側(ce)。二(er)次側(ce)會(hui)產(chan)生高(gao)(gao)(gao)頻(pin)AC電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)，再次進行(xing)整流(liu)(liu)(liu)——平滑(hua)，以(yi)轉換(huan)(huan)成(cheng)想要(yao)的(de)(de)(de)(de)DC電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)。采(cai)用(yong)該種體例，可以(yi)將100VAC轉換(huan)(huan)成(cheng)想要(yao)的(de)(de)(de)(de)DC電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)，必須使(shi)用(yong)控制電(dian)(dian)(dian)(dian)(dian)(dian)路（控制IC和(he)反饋電(dian)(dian)(dian)(dian)(dian)(dian)路）來控制開(kai)(kai)(kai)關(guan)元件ON/OFF時間。AC-DC模(mo)塊(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)源輸入50/60Hz的(de)(de)(de)(de)交流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)，一(yi)樣平常會(hui)選(xuan)擇采(cai)用(yong)開(kai)(kai)(kai)關(guan)體例的(de)(de)(de)(de)AC/DC轉換(huan)(huan)，整流(liu)(liu)(liu)與濾波(bo)必不可少(shao)。開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)工(gong)作(zuo)(zuo)過程(cheng)相稱容易理解，PWM開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)源是(shi)讓功率晶體管工(gong)作(zuo)(zuo)在導通和(he)關(guan)斷的(de)(de)(de)(de)狀況。PWM開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)源更為(wei)有用(yong)的(de)(de)(de)(de)工(gong)作(zuo)(zuo)過程(cheng)是(shi)通過斬波(bo)，即(ji)把輸入的(de)(de)(de)(de)直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)斬成(cheng)幅值(zhi)等于輸入電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)幅值(zhi)的(de)(de)(de)(de)脈(mo)沖電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)來實現的(de)(de)(de)(de)。脈(mo)沖的(de)(de)(de)(de)占(zhan)空(kong)比(bi)由(you)開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)控制器(qi)來調節(jie)，一(yi)旦輸入電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)被斬成(cheng)交流(liu)(liu)(liu)方波(bo)，其幅值(zhi)就可以(yi)通過變壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)來升高(gao)(gao)(gao)或降低。通過增長(chang)變壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)的(de)(de)(de)(de)二(er)次繞(rao)組數就可以(yi)增長(chang)輸出(chu)(chu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)值(zhi)。之后這些交流(liu)(liu)(liu)波(bo)形經過整流(liu)(liu)(liu)濾波(bo)后就得到直流(liu)(liu)(liu)輸出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)，控制器(qi)的(de)(de)(de)(de)重(zhong)要(yao)目的(de)(de)(de)(de)是(shi)保(bao)持輸出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)穩固。虹(hong)口區(qu)ACDC電(dian)(dian)(dian)(dian)(dian)(dian)源模(mo)塊(kuai)工(gong)廠

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