圖  拓普康(kang)可編寫程序(xu)整流電源線

拓普康直流電源TP.C.10KW系列維修-負載能力差維修方法

問(wen)題現像一：開(kai)關電源額定負(fu)載專(zhuan)業(ye)較弱

外接主機(ji)電(dian)(dian)源電(dian)(dian)動機(ji)扭矩功能(neng)差是一種個常用的機(ji)械故(gu)障，般都要(yao)突然出現在傳統(tong)式或(huo)者是任(ren)務(wu)日期長的外接主機(ji)電(dian)(dian)源中，主要(yao)主觀原因是各元(yuan)電(dian)(dian)子元(yuan)件銹蝕，旋轉開關管(guan)的任(ren)務(wu)不固定，是沒有馬上參與水(shui)冷等。不但再有穩壓(ya)場效(xiao)應管(guan)低熱漏電(dian)(dian)，整流場效(xiao)應管(guan)順壞等。

搶修做法：用萬用表重(zhong)在檢(jian)驗以下穩壓電(dian)(dian)感，直流電(dian)(dian)濾波電(dian)(dian)感，限流電(dian)(dian)容有哪些變(bian)質(zhi)等再慎重(zhong)檢(jian)驗以下三極(ji)管板(ban)上的各種焊(han)點能不能開(kai)(kai)焊(han)，虛(xu)接等。把(ba)開(kai)(kai)焊(han)的焊(han)點完后焊(han)牢(lao)，修改變(bian)質(zhi)的元電(dian)(dian)子元件，普(pu)遍故障問題就行了來(lai)排除。

出現問題狀(zhuang)況：無直流讀(du)(du)取(qu)功率讀(du)(du)取(qu)功率讀(du)(du)取(qu)，但保險金絲原(yuan)狀(zhuang)

一些不良現象證明旋鈕電壓未做(zuo)運行(xing)，并且做(zuo)運行(xing)后進入(ru)了保障程序。

修理方式：一方面應判(pan)定了解(jie)旋鈕電(dian)(dian)原的(de)(de)(de)主要電(dian)(dian)子器(qi)件UC3842有無(wu)地(di)處上班睡眠狀(zhuang)態或就(jiu)已搞壞(huai)(huai)。選(xuan)擇具體方法是(shi)(shi)那么的(de)(de)(de)：加(jia)電(dian)(dian)測UC3842的(de)(de)(de)第7腳(jiao)對地(di)電(dian)(dian)壓(ya)電(dian)(dian)流，若(ruo)(ruo)測第8腳(jiao)有+5V輸(shu)出功(gong)率，1，2，4，6腳(jiao)亦有區別的(de)(de)(de)端電(dian)(dian)壓(ya)，則講解(jie)集成運放已起振(zhen)，UC3842總體普(pu)通;若(ruo)(ruo)7腳(jiao)線(xian)工作(zuo)電(dian)(dian)壓(ya)低，同樣(yang)管(guan)腳(jiao)無(wu)線(xian)工作(zuo)電(dian)(dian)壓(ya)或不(bu)上下波(bo)動，則UC3842已壞(huai)(huai)損。UC3842集成ic損傷最經常見到的(de)(de)(de)是(shi)(shi)6，7腳(jiao)對地(di)穿(chuan)透(tou)，5，7腳(jiao)對地(di)穿(chuan)透(tou)和1，7腳(jiao)對地(di)損壞(huai)(huai)電(dian)(dian)壓(ya)。若(ruo)(ruo)是(shi)(shi)這多只腳(jiao)都(dou)為損壞(huai)(huai)電(dian)(dian)壓(ya)，而開關按鈕電(dian)(dian)源(yuan)電(dian)(dian)路是(shi)(shi)不(bu)許正(zheng)常人加(jia)載，則UC3842必壞(huai)(huai)，應簡單修改。若(ruo)(ruo)分析集成塊未壞(huai)(huai)，則就(jiu)重點(dian)檢(jian)驗(yan)面板(ban)開關工作(zuo)功(gong)率管(guan)的(de)(de)(de)柵極(G極)的(de)(de)(de)`限流內(nei)阻需不(bu)需要開焊，虛接，變值，變質以其旋轉開關熱效(xiao)率管(guan)自己需不(bu)需要效(xiao)能惡意。除此(ci)認知能力(li)，24v電(dian)(dian)源(yuan)的(de)(de)(de)輸(shu)出線(xian)也(ye)(ye)很有可能斷開或接受(shou)惡意也(ye)(ye)會致使此(ci)類故障率。因在維護時也(ye)(ye)應需要注(zhu)意檢(jian)查一次。

                                                        圖 拓普康可程序(xu)編(bian)程直流變壓器(qi)24v電源

故章(zhang)現象(xiang)二：有(you)直流(liu)電源(yuan)電阻導出，但導出電阻過高

這樣(yang)洛天(tian)(tian)依因此(ci)產于于穩壓(ya)(ya)(ya)送樣(yang)和穩壓(ya)(ya)(ya)調控(kong)電壓(ya)(ya)(ya)線(xian)(xian)路(lu)(lu)有洛天(tian)(tian)依所導致的(de)。在控(kong)制(zhi)開關電壓(ya)(ya)(ya)中，直流變壓(ya)(ya)(ya)器(qi)工(gong)作(zuo)輸出、送樣(yang)內阻、誤差率(lv)送樣(yang)變成器(qi)(如LM324，LM358等)、光耦(ou)合電路(lu)(lu)器(qi)(PC817)、交流電源控(kong)制(zhi)電源芯片(UC3842)等電線(xian)(xian)相互之間定義半個個閉鎖(suo)的(de)管理環路(lu)(lu)，隨便一片出故障(zhang)都是會引致讀取線(xian)(xian)電壓(ya)(ya)(ya)偏(pian)高。

修(xiu)補(bu)保養具(ju)體(ti)方法(fa)(fa)：仍(reng)然(ran)電(dian)(dian)(dian)開關(guan)主(zhu)機(ji)外接電(dian)(dian)(dian)源含有過(guo)(guo)壓(ya)(ya)維(wei)護性集成(cheng)運放(fang)，輸(shu)出(chu)精(jing)度的電(dian)(dian)(dian)阻值(zhi)(zhi)過(guo)(guo)高(gao)一開始(shi)會使(shi)過(guo)(guo)壓(ya)(ya)維(wei)護性集成(cheng)運放(fang)健身(shen)動(dong)作。從而(er)在那樣發動(dong)機(ji)故障的修(xiu)補(bu)保養，我(wo)國能夠(gou) 根據斷線(xian)(xian)過(guo)(guo)壓(ya)(ya)維(wei)護性集成(cheng)運放(fang)，使(shi)過(guo)(guo)壓(ya)(ya)維(wei)護性集成(cheng)運放(fang)我(wo)幫助，在不(bu)一定，在線(xian)(xian)在線(xian)(xian)測(ce)量開啟瞬息的主(zhu)機(ji)外接電(dian)(dian)(dian)源主(zhu)的電(dian)(dian)(dian)阻值(zhi)(zhi)。要在線(xian)(xian)在線(xian)(xian)測(ce)量值(zhi)(zhi)比常(chang)規(gui)值(zhi)(zhi)高(gao)過(guo)(guo)IV綜上所述(shu)，解釋內容輸(shu)出(chu)電(dian)(dian)(dian)壓(ya)(ya)電(dian)(dian)(dian)流過(guo)(guo)高(gao)。我(wo)們的應側重于觀察取樣方法(fa)(fa)內阻會不(bu)會變(bian)值(zhi)(zhi)或燒壞，精(jing)密(mi)儀器(qi)穩壓(ya)(ya)拖動(dong)器(qi)(TL431)或光合體(ti)器(qi)(PC817)使(shi)用性能無良，變(bian)質(zhi)或壞掉;進來(lai)精(jing)密(mi)機(ji)械穩壓(ya)(ya)放(fang)小器(qi)(TL431)更易受損，各位(wei)該(gai)用下述(shu)的方法(fa)(fa)對五金機(ji)械穩壓(ya)(ya)變(bian)大器(qi)(TL431)簡單好環的判別：將TL431的參照端(Ref)與它的金屬電(dian)(dian)(dian)極(Cathode)相聯，串(chuan)10k的阻值(zhi)(zhi)，連通(tong)5V線(xian)(xian)電(dian)(dian)(dian)壓(ya)(ya)，若陽極(Anode)與陰(yin)離(li)子內為(wei)2.5V，然(ran)后(hou)等(deng)到時(shi)光還卻(que)仍(reng)然(ran)為(wei)2.5V，則為(wei)好管，不(bu)然(ran)的話(hua)為(wei)壞管。