2019-4-26 大功率充電電源嘯叫的原因
大功率充電電源(yuan)(yuan)控制(zhi)著(zhu)電路中開(kai)關管開(kai)通和關斷(duan)的時間比率,維持著(zhu)穩定的電路電壓輸出(chu),是(shi)一種非(fei)常(chang)常(chang)見的電源(yuan)(yuan)設(she)(she)計(ji)(ji)。但是(shi)從事過開(kai)關電源(yuan)(yuan)設(she)(she)計(ji)(ji)的人都知(zhi)道,在對開(kai)關電源(yuan)(yuan)進行測(ce)試(shi)的過程當中,經常(chang)會(hui)聽到一些嘯叫聲(sheng),類似(si)于打高壓不良時發出(chu)的漏電音,或著(zhu)像高壓拉弧...
2019-4-25 大功率充電機短路故障的原因
在大(da)(da)功率充電(dian)(dian)機正常工作時(shi)(shi),通過交(jiao)流保(bao)險(xian)絲的電(dian)(dian)流,滿(man)負(fu)荷工作時(shi)(shi)最大(da)(da)不會超過4A,而本次設(she)計中交(jiao)流保(bao)險(xian)絲的熔斷電(dian)(dian)流為5A,現在上(shang)電(dian)(dian)即燒,表明電(dian)(dian)源內有嚴重短路性故障。 ① 抗干(gan)擾電(dian)(dian)容C1、C2、C3是(shi)否擊(ji)穿。如果C1、C2被(bei)同時(shi)(shi)擊(ji)穿短...
2019-4-25 蓄電池充電機反饋回路開路
如果(guo)蓄電(dian)池充電(dian)機變壓器次(ci)級(ji)的(de)電(dian)壓反(fan)饋回路開(kai)路,即分壓電(dian)阻開(kai)路,反(fan)饋電(dian)壓不能輸(shu)入(ru)PWM脈寬(kuan)調(diao)制(zhi)芯片(pian)輸(shu)入(ru)腳(jiao),或(huo)者(zhe)初級(ji)線圈電(dian)流過(guo)大,脈寬(kuan)調(diao)制(zhi)芯片(pian)SG3525過(guo)流保護工(gong)作,或(huo)者(zhe)光(guang)耦合器PC817故(gu)障(zhang),SG3525的(de)輸(shu)出脈沖信號不能送到專(zhuan)用驅動芯片(pian)I...
2019-4-24 蓄電池充電機的正確使用方法
雖然我們對(dui)蓄(xu)電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)機比較熟悉(xi),但是(shi),這并不代表我們真的(de)明(ming)白蓄(xu)電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)機的(de)正(zheng)確使(shi)用(yong)方法。蓄(xu)電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)機操(cao)作(zuo)或者使(shi)用(yong)時(shi)(shi),應該(gai)注意(yi)哪些(xie)小細(xi)節(jie)的(de)問(wen)題,也許這些(xie)小細(xi)節(jie)就是(shi)決定(ding)蓄(xu)電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)機壽命,和使(shi)用(yong)時(shi)(shi)的(de)安全(quan)性的(de)重(zhong)要(yao)因素。 當然,使(shi)用(yong)時(shi)(shi)正(zheng)負(fu)極要(yao)連...
2019-4-24 蓄電池充電機集中管理監控技術成為電源行業中的焦點
隨著計算機網(wang)絡(luo)(luo)的(de)發展,“網(wang)絡(luo)(luo)就(jiu)是(shi)計算機”的(de)趨(qu)勢日益明顯,要讓信(xin)息實時暢通(tong)并為人(ren)所共享(xiang)將至關重要,而高(gao)質量的(de)供電是(shi)網(wang)絡(luo)(luo)正常運轉的(de)基礎,所以保護網(wang)絡(luo)(luo)設備首先(xian)是(shi)要保護整個(ge)網(wang)絡(luo)(luo)的(de)電源,不光(guang)是(shi)主機(HOST)、路由(you)器(ROUTER)、交換機...
2019-4-23 智能充電機不間斷電源常見故障現象原因分析?
在日常處(chu)理(li)Smart-智(zhi)(zhi)能(neng)(neng)充電(dian)(dian)機報修申請的(de)過程中,我(wo)們發現(xian)有許多智(zhi)(zhi)能(neng)(neng)充電(dian)(dian)機的(de)故障(zhang)現(xian)象是(shi)(shi)由于電(dian)(dian)池、市電(dian)(dian)、使用環境和(he)使用方法等因素造(zao)成的(de),有相當一(yi)部(bu)分智(zhi)(zhi)能(neng)(neng)充電(dian)(dian)機本身并沒有出現(xian)故障(zhang)。如果能(neng)(neng)將(jiang)這些(xie)因素找出來,判斷出并非是(shi)(shi)由于智(zhi)(zhi)能(neng)(neng)充電(dian)(dian)機引起的(de)故障(zhang)現(xian)象...
2019-4-23 如何選購蓄電池充電機
許(xu)多用(yong)戶在確定蓄電(dian)池(chi)充(chong)(chong)電(dian)機(ji)功(gong)率(lv)時,由(you)于(yu)資金的(de)(de)困擾和(he)對蓄電(dian)池(chi)充(chong)(chong)電(dian)機(ji)電(dian)源(yuan)不甚了解(jie),往(wang)往(wang)從目前機(ji)房設(she)備的(de)(de)容量去(qu)選擇(ze)蓄電(dian)池(chi)充(chong)(chong)電(dian)機(ji)的(de)(de)功(gong)率(lv),這(zhe)(zhe)樣就會導致蓄電(dian)池(chi)充(chong)(chong)電(dian)機(ji)功(gong)率(lv)容量與負載的(de)(de)功(gong)率(lv)相同或略大。實際上這(zhe)(zhe)樣選擇(ze)是(shi)不明智的(de)(de)。選購蓄電(dian)池(chi)充(chong)(chong)電(dian)機(ji)電(dian)源(yuan)時,要根(gen)據...
2019-4-19 110V充電機有什么規格的?以及在直流屏的應用
110V直流(liu)屏充電機產(chan)品體積小、重量輕(qing)、便于移動及攜帶。具(ju)有(you)操作(zuo)簡便,充電速度快,充電還(huan)原效(xiao)率(lv)(lv)高,超過(guo)(guo)充電無(wu)過(guo)(guo)充危險,電壓/電流(liu)數據顯示、具(ju)有(you)過(guo)(guo)壓、欠壓、過(guo)(guo)流(liu)、輸出短路(lu)、防反接保(bao)護和過(guo)(guo)熱保(bao)護等功能。采(cai)用波(bo)寬調變(bian)技術、高效(xiao)率(lv)(lv)、高功率(lv)(lv)因數、噪音...
2019-4-19 并聯均流平衡大功率充電機負載電流分配
傳統大(da)(da)功率充(chong)(chong)電(dian)機(ji)(ji)由于采(cai)用(yong)的(de)是變壓(ya)器(qi)變壓(ya)整(zheng)流、可控(kong)硅控(kong)制的(de)方(fang)法,因此設(she)備笨(ben)重,可靠性差。電(dian)瓶充(chong)(chong)電(dian)機(ji)(ji)、汽(qi)車充(chong)(chong)電(dian)機(ji)(ji)、汽(qi)車電(dian)瓶充(chong)(chong)電(dian)機(ji)(ji)、電(dian)動汽(qi)車充(chong)(chong)電(dian)機(ji)(ji)、電(dian)動叉(cha)車充(chong)(chong)電(dian)機(ji)(ji)的(de)蓄(xu)電(dian)池的(de)充(chong)(chong)電(dian),共同面臨的(de)一大(da)(da)問(wen)題是這種小電(dian)流慢充(chong)(chong)方(fang)式,蓄(xu)電(dian)池初(chu)充(chong)(chong)所需(xu)時間非常長,充(chong)(chong)...
2019-4-18 處理蓄電池充電機突然停電的方法
當蓄(xu)電(dian)(dian)(dian)池充(chong)(chong)(chong)足電(dian)(dian)(dian)后,充(chong)(chong)(chong)電(dian)(dian)(dian)機必須適時(shi)地切斷充(chong)(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu),否則蓄(xu)電(dian)(dian)(dian)池將出現大量出氣、失(shi)水和溫升等過充(chong)(chong)(chong)反(fan)應,直接危及(ji)蓄(xu)電(dian)(dian)(dian)池的(de)使用壽命。因此(ci),必須隨時(shi)監測蓄(xu)電(dian)(dian)(dian)池的(de)充(chong)(chong)(chong)電(dian)(dian)(dian)狀況(kuang),保證電(dian)(dian)(dian)池充(chong)(chong)(chong)足電(dian)(dian)(dian)而又不過充(chong)(chong)(chong)電(dian)(dian)(dian)。主(zhu)要(yao)的(de)停充(chong)(chong)(chong)控制方法有(you): (1)定時(shi)控制采用恒流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)...