AC-DC電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)Buck降壓(ya)、非絕緣(yuan)體(ti)例(li)(li)：Buck是降壓(ya)的(de)(de)(de)意(yi)思(si)，Buck轉(zhuan)換器(qi)是行使(shi)(shi)二(er)極管(guan)整(zheng)流(liu)(liu)(liu)的(de)(de)(de)降壓(ya)轉(zhuan)換器(qi)，反(fan)映性用(yong)途為(wei)用(yong)在非絕緣(yuan)降壓(ya)開(kai)關的(de)(de)(de)DC-DC轉(zhuan)換器(qi)上。DC-DC轉(zhuan)換常稱作(zuo)二(er)極管(guan)整(zheng)流(liu)(liu)(liu)式(shi)和(he)(he)異步(bu)式(shi)等。和(he)(he)上篇提到的(de)(de)(de)正激(ji)(ji)體(ti)例(li)(li)相比，因為(wei)未(wei)使(shi)(shi)用(yong)變壓(ya)器(qi)，一次側(ce)和(he)(he)二(er)次側(ce)并未(wei)絕緣(yuan)。不(bu)(bu)(bu)需絕緣(yuan)時(shi)，以(yi)不(bu)(bu)(bu)使(shi)(shi)用(yong)變壓(ya)器(qi)的(de)(de)(de)該(gai)體(ti)例(li)(li)較為(wei)簡單(dan)。Buck體(ti)例(li)(li)不(bu)(bu)(bu)必(bi)(bi)(bi)設(she)定變壓(ya)器(qi)調整(zheng)電(dian)(dian)(dian)(dian)壓(ya)，只要行使(shi)(shi)MOSFET控制(zhi)，就可(ke)以(yi)決(jue)定輸出(chu)電(dian)(dian)(dian)(dian)壓(ya)。因此百度搜索排(pai)行，未(wei)必(bi)(bi)(bi)會(hui)必(bi)(bi)(bi)要來自于二(er)次側(ce)的(de)(de)(de)反(fan)饋。Buck體(ti)例(li)(li)的(de)(de)(de)特(te)性是電(dian)(dian)(dian)(dian)路(lu)構造簡單(dan)，組成(cheng)小(xiao)功率(lv)(lv)電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)電(dian)(dian)(dian)(dian)路(lu)時(shi)，成(cheng)本比反(fan)激(ji)(ji)式(shi)更有競爭力。因此，常使(shi)(shi)用(yong)在家電(dian)(dian)(dian)(dian)產品的(de)(de)(de)微控制(zhi)器(qi)用(yong)電(dian)(dian)(dian)(dian)源(yuan)上。但是因為(wei)不(bu)(bu)(bu)必(bi)(bi)(bi)通(tong)過變壓(ya)器(qi)，流(liu)(liu)(liu)向開(kai)關元件的(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)比采用(yong)反(fan)激(ji)(ji)體(ti)例(li)(li)的(de)(de)(de)劃一輸出(chu)功率(lv)(lv)還大，只適用(yong)于小(xiao)功率(lv)(lv)輸出(chu)百度網站(zhan)排(pai)名，而無法用(yong)于大功率(lv)(lv)輸出(chu)上。模(mo)(mo)式(shi)幾乎和(he)(he)正激(ji)(ji)體(ti)例(li)(li)雷(lei)同(tong)，只是去掉(diao)正激(ji)(ji)體(ti)例(li)(li)的(de)(de)(de)變壓(ya)器(qi)，將(jiang)D1換成(cheng)MOSFET。MOSFET為(wei)ON時(shi)，電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)經過電(dian)(dian)(dian)(dian)感(gan)(gan)流(liu)(liu)(liu)向負載(zai)(zai)(zai)端，同(tong)時(shi)電(dian)(dian)(dian)(dian)感(gan)(gan)也(ye)積蓄(xu)電(dian)(dian)(dian)(dian)能。此時(shi)，二(er)極管(guan)為(wei)OFF。MOSFET為(wei)OFF時(shi)，積蓄(xu)在電(dian)(dian)(dian)(dian)感(gan)(gan)的(de)(de)(de)電(dian)(dian)(dian)(dian)能經由二(er)極管(guan)D2供應(ying)至負載(zai)(zai)(zai)端。和(he)(he)正激(ji)(ji)轉(zhuan)換器(qi)的(de)(de)(de)D1雷(lei)同(tong)，開(kai)啟(qi)或關閉MOSFET一般來說，這類(lei)模(mo)(mo)塊(kuai)稱為(wei)負載(zai)(zai)(zai)點電(dian)(dian)(dian)(dian)源(yuan)供應(ying)系統(tong)(tong)或使(shi)(shi)用(yong)點電(dian)(dian)(dian)(dian)源(yuan)供應(ying)系統(tong)(tong) 。青(qing)浦區(qu)ACDC電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)采購

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)塊(kuai)(kuai)上(shang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)后迅速燒(shao)(shao)毀(hui)：與以(yi)前的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)塊(kuai)(kuai)損壞相(xiang)比(bi)，更糟糕(gao)的(de)情況是不只電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)斷開(kai)，而(er)且(qie)(qie)整個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)都被燒(shao)(shao)毀(hui)。特定(ding)的(de)現象是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)塊(kuai)(kuai)在通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時會燃燒(shao)(shao)煙(yan)霧(wu)，并且(qie)(qie)輸(shu)(shu)(shu)入(ru)端的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)會。此類(lei)問題較為嚴重，需要在以(yi)前的(de)設(she)計(ji)中避(bi)免。如果發(fa)生這種情況，其原因(yin)(yin)是什么(me)？詳細信息如下：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)塊(kuai)(kuai)燒(shao)(shao)壞的(de)原因(yin)(yin)：1、輸(shu)(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓極性相(xiang)反；2、輸(shu)(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓遠高于標稱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓；3、輸(shu)(shu)(shu)出(chu)極性電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容反接(jie)；4、上(shang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時，輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)容易短路(lu)或外部負載電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流較大。變壓器(qi)(qi)是用(yong)作ACDC轉換模(mo)塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)的(de)較常用(yong)方法之一，在此以(yi)輸(shu)(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓100VAC為例子網站(zhan)排名優化，通過變壓器(qi)(qi)將100VAC降壓（變壓）至可獲(huo)得所(suo)需DC電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的(de)AC電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓值。崇明(ming)區(qu)ACDC電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)模(mo)塊(kuai)(kuai)批發(fa)多少(shao)錢AC/DC變換按(an)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)接(jie)線方式可分(fen)為，半波電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)、全(quan)波電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)。

對(dui)(dui)有(you)TRIM或ADJ(可(ke)(ke)調(diao)(diao)節)輸(shu)出(chu)引(yin)腳(jiao)的(de)(de)(de)模塊(kuai)電(dian)(dian)源產品，可(ke)(ke)通過(guo)電(dian)(dian)阻或電(dian)(dian)位(wei)(wei)(wei)器(qi)對(dui)(dui)輸(shu)出(chu)電(dian)(dian)壓進行(xing)一(yi)定范(fan)圍(wei)內的(de)(de)(de)調(diao)(diao)節，一(yi)般調(diao)(diao)節范(fan)圍(wei)為(wei)±10％。對(dui)(dui)TRIM輸(shu)出(chu)引(yin)腳(jiao)，將電(dian)(dian)位(wei)(wei)(wei)器(qi)的(de)(de)(de)中(zhong)心與(yu)TRIM相(xiang)(xiang)連，在所(suo)有(you)＋S、－S管腳(jiao)的(de)(de)(de)模塊(kuai)中(zhong)，其他兩(liang)端(duan)分(fen)別(bie)接(jie)(jie)＋S、－S。沒有(you)＋S、－S時，將兩(liang)端(duan)分(fen)別(bie)接(jie)(jie)到相(xiang)(xiang)應主(zhu)路的(de)(de)(de)輸(shu)出(chu)正負極(＋S接(jie)(jie)＋Vin，－S接(jie)(jie)－Vin)，然后調(diao)(diao)節電(dian)(dian)位(wei)(wei)(wei)器(qi)即(ji)可(ke)(ke)。電(dian)(dian)位(wei)(wei)(wei)器(qi)的(de)(de)(de)阻值一(yi)般選用5～10kΩ比(bi)較合適。對(dui)(dui)ADJ輸(shu)出(chu)引(yin)腳(jiao)，分(fen)為(wei)輸(shu)入邊(bian)調(diao)(diao)節與(yu)輸(shu)出(chu)邊(bian)節。輸(shu)出(chu)邊(bian)調(diao)(diao)節與(yu)TRIM引(yin)腳(jiao)的(de)(de)(de)調(diao)(diao)節方式一(yi)樣。輸(shu)入邊(bian)調(diao)(diao)節只能(neng)上調(diao)(diao)輸(shu)出(chu)電(dian)(dian)壓，此(ci)時將電(dian)(dian)位(wei)(wei)(wei)器(qi)的(de)(de)(de)其中(zhong)一(yi)端(duan)與(yu)中(zhong)心相(xiang)(xiang)接(jie)(jie)，另一(yi)端(duan)接(jie)(jie)輸(shu)入端(duan)的(de)(de)(de)地。

5V模塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)簡易電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)設(she)計(ji)原(yuan)理：在生(sheng)活中，不管(guan)(guan)是工(gong)程師照(zhao)舊(jiu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子設(she)備在現實應用(yong)中，經(jing)(jing)常必要使用(yong)到(dao)5V電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)。一樣平常常見的(de)(de)有(you)(you)5V充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器、5V電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)適配器、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)串聯和(he)5V模塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)。下(xia)面(mian)淺(qian)談下(xia)一種5V電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)設(she)計(ji)原(yuan)理。必要預(yu)備的(de)(de)元器件材料有(you)(you)220V轉6V的(de)(de)單相交(jiao)流(liu)變壓(ya)(ya)器、整(zheng)流(liu)橋（可用(yong)4個二(er)極(ji)管(guan)(guan)代替）、LM7805及(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)。原(yuan)理為220V交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)經(jing)(jing)過變壓(ya)(ya)器降壓(ya)(ya)為6V交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，然后經(jing)(jing)過全橋整(zheng)流(liu)，再濾波網站建設(she)價(jia)格，得到(dao)的(de)(de)直(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)約為6V交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)1.2倍左右(you)，之后經(jing)(jing)過LM7805三端線性穩壓(ya)(ya)器穩壓(ya)(ya)輸出5V。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)原(yuan)理圖如下(xia)圖所示在選(xuan)擇(ze)變壓(ya)(ya)器時肯定要結(jie)合5V模塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)輸出功率(lv)而選(xuan)擇(ze)合適的(de)(de)變壓(ya)(ya)器輸出功率(lv)，如選(xuan)擇(ze)5W的(de)(de)輸出功率(lv)，則輸出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)較(jiao)大(da)只(zhi)有(you)(you)0.7A。acdc模塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)有(you)(you)著完(wan)善(shan)的(de)(de)保護措施。

電(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)(kuai)有哪(na)幾種(zhong)(zhong)？隨著電(dian)(dian)(dian)(dian)子行業技術的(de)(de)進(jin)步，電(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)(kuai)已(yi)經不能簡(jian)單的(de)(de)列舉它有幾種(zhong)(zhong)了，分類(lei)(lei)(lei)的(de)(de)方式都有很多種(zhong)(zhong)類(lei)(lei)(lei)。不管怎么(me)分，選擇(ze)合適自身的(de)(de)才是(shi)較好的(de)(de)。從不同應用上來看(kan)，大(da)致可分為(wei)以下幾種(zhong)(zhong)。1、按輸(shu)入(ru)輸(shu)出類(lei)(lei)(lei)型分：主(zhu)要(yao)分為(wei)交流輸(shu)入(ru)AC-DC模塊(kuai)(kuai)(kuai)電(dian)(dian)(dian)(dian)源(yuan)(yuan)和直(zhi)流輸(shu)入(ru)DC-DC模塊(kuai)(kuai)(kuai)電(dian)(dian)(dian)(dian)源(yuan)(yuan)，以及(ji)DC-AC逆(ni)變(bian)電(dian)(dian)(dian)(dian)源(yuan)(yuan)。2、按輸(shu)出功(gong)率(lv)(lv)(lv)(lv)分：AC-DC模塊(kuai)(kuai)(kuai)電(dian)(dian)(dian)(dian)源(yuan)(yuan)主(zhu)要(yao)分為(wei)小(xiao)功(gong)率(lv)(lv)(lv)(lv)(3W~36W)、中率(lv)(lv)(lv)(lv)(50W~200W)、大(da)功(gong)率(lv)(lv)(lv)(lv)(>200W)。DC-DC模塊(kuai)(kuai)(kuai)電(dian)(dian)(dian)(dian)源(yuan)(yuan)主(zhu)要(yao)分為(wei)微功(gong)率(lv)(lv)(lv)(lv)電(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)(kuai)(0.1W~3W)、小(xiao)功(gong)率(lv)(lv)(lv)(lv)電(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)(kuai)(1W~30W)、中率(lv)(lv)(lv)(lv)電(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)(kuai)(50W~200W)、大(da)功(gong)率(lv)(lv)(lv)(lv)電(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)(kuai)(>200W)。集成電(dian)(dian)(dian)(dian)路(lu)的(de)(de)質量直(zhi)接影(ying)響電(dian)(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)參數。吉林ACDC電(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)(kuai)品牌推薦

設計技術及生(sheng)產工藝在國內外(wai)均已(yi)成熟(shu)和標準化(hua)，并(bing)已(yi)得到用戶的認(ren)可。青浦區ACDC電(dian)源(yuan)模塊采購(gou)

acdc電(dian)(dian)源模(mo)塊(kuai)是電(dian)(dian)源模(mo)塊(kuai)中(zhong)(zhong)常(chang)見的(de)(de)電(dian)(dian)源產品之(zhi)一，在(zai)(zai)使用acdc電(dian)(dian)源模(mo)塊(kuai)時應(ying)該去遵守(shou)其(qi)操作規(gui)程(cheng)，按其(qi)規(gui)則要(yao)(yao)領完成安(an)裝(zhuang)與使用。如果不(bu)注意(yi)所(suo)謂的(de)(de)一些小問題就(jiu)會導(dao)致電(dian)(dian)源的(de)(de)損(sun)壞以及其(qi)他事(shi)故(gu)。acdc電(dian)(dian)源模(mo)塊(kuai)在(zai)(zai)使用過程(cheng)中(zhong)(zhong)的(de)(de)一些操作規(gui)則，在(zai)(zai)電(dian)(dian)源的(de)(de)表面，不(bu)要(yao)(yao)隨意(yi)觸摸電(dian)(dian)源模(mo)塊(kuai)。在(zai)(zai)工作過程(cheng)中(zhong)(zhong)，電(dian)(dian)源模(mo)塊(kuai)的(de)(de)外殼(ke)溫度較高，不(bu)要(yao)(yao)去輕易觸摸，避免被燙(tang)傷、不(bu)要(yao)(yao)觸摸輸入端，更(geng)不(bu)能打開模(mo)塊(kuai)電(dian)(dian)源觸摸里面的(de)(de)部件(jian)，以免高溫燙(tang)傷，或對里面的(de)(de)部件(jian)造成損(sun)害(hai)。在(zai)(zai)電(dian)(dian)源模(mo)塊(kuai)工作的(de)(de)時候，盡(jin)量遠離它，避免發生意(yi)外，對自己造成傷害(hai)。青浦區ACDC電(dian)(dian)源模(mo)塊(kuai)采購

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