穩壓器的原理
最初(chu)的(de)電(dian)(dian)(dian)力(li)穩(wen)壓器(qi)是靠繼(ji)電(dian)(dian)(dian)器(qi)的(de)跳動(dong)穩(wen)定(ding)電(dian)(dian)(dian)壓的(de),當電(dian)(dian)(dian)網電(dian)(dian)(dian)壓出現波動(dong)時(shi),電(dian)(dian)(dian)力(li)穩(wen)壓器(qi)的(de)自動(dong)糾(jiu)正電(dian)(dian)(dian)路啟動(dong),使內部繼(ji)電(dian)(dian)(dian)器(qi)動(dong)作。迫(po)使輸出電(dian)(dian)(dian)壓保持(chi)在設定(ding)值附近(jin),這種電(dian)(dian)(dian)路優點是電(dian)(dian)(dian)路簡單(dan),缺點是穩(wen)壓精度不高并且每(mei)一次繼(ji)電(dian)(dian)(dian)器(qi)跳動(dong)換擋,都(dou)會使供電(dian)(dian)(dian)電(dian)(dian)(dian)源發生一次瞬時(shi)的(de)中斷(duan)并產生火花干(gan)擾。
現在的(de)穩(wen)壓(ya)(ya)器工(gong)作(zuo)原(yuan)理(li)比較簡單,它是由調壓(ya)(ya)電(dian)(dian)路、控(kong)制電(dian)(dian)路、及伺服電(dian)(dian)機(ji)等部(bu)件(jian)組成,當輸(shu)入電(dian)(dian)壓(ya)(ya)或負載變化時,控(kong)制電(dian)(dian)路進行取(qu)樣、比較、放大,然后(hou)驅動(dong)伺服電(dian)(dian)機(ji)轉動(dong),使(shi)調壓(ya)(ya)器碳刷的(de)位置改變,通過自動(dong)調整(zheng)線(xian)圈(quan)匝數(shu)比,從(cong)而保持(chi)輸(shu)出電(dian)(dian)壓(ya)(ya)的(de)穩(wen)定。容(rong)量較大的(de)穩(wen)壓(ya)(ya)器,還采用電(dian)(dian)壓(ya)(ya)補償的(de)原(yuan)理(li)工(gong)作(zuo)。
穩壓器有什么用
穩壓器是一種能自動調整輸出電壓的供電電路或供電設備,其作用是將波動較大和達不到電器設備要求的電源電壓穩定在它的設定值范圍內,使各種電路或電器設備能在額定工作電壓下正常工作。高質量的穩壓器品牌產品,大多采用電(dian)(dian)機拖(tuo)動碳刷的方法(fa)穩定電(dian)(dian)壓,這(zhe)種穩壓器對電(dian)(dian)器設備(bei)產生的干(gan)擾很小穩壓精度相對較(jiao)高。
穩壓器怎么使用
先把(ba)電(dian)(dian)器(qi)的(de)電(dian)(dian)源(yuan)(yuan)接(jie)在(zai)穩壓器(qi)上,然后再打開穩壓器(qi)的(de)電(dian)(dian)源(yuan)(yuan)開關,檢(jian)測是否可以正常使用(yong),檢(jian)測完后就可以將大(da)功率負載接(jie)在(zai)穩壓器(qi)上了。注意(yi),當(dang)電(dian)(dian)器(qi)長(chang)時(shi)間不用(yong)時(shi),要(yao)把(ba)穩壓器(qi)的(de)電(dian)(dian)源(yuan)(yuan)切斷,這樣才能(neng)延長(chang)穩壓器(qi)的(de)使用(yong)壽命。
穩壓器的保養方法
1、穩壓器的(de)功率應(ying)大(da)于(yu)用電(dian)設備的(de)總功率,使用時,應(ying)放置在通(tong)風、干燥、無陽光直射(she)、無腐蝕性氣體的(de)室內使用。
2、經(jing)常觀察穩壓器的(de)冷(leng)卻風扇和傳(chuan)動機構是(shi)否(fou)運行正常,查看輸入(ru)電壓和負(fu)載是(shi)否(fou)超過額定范圍,發現異常及(ji)時(shi)處理。
3、穩壓(ya)器(qi)(qi)開(kai)關(guan)(guan)不(bu)宜作設(she)備的總開(kai)關(guan)(guan)使用,使用時,應(ying)先打開(kai)穩壓(ya)器(qi)(qi)開(kai)關(guan)(guan),待(dai)有電源輸(shu)出后,再依次從(cong)按功率小(xiao)到大接上(shang)不(bu)同的用電設(she)備,關(guan)(guan)機時從(cong)大到小(xiao)關(guan)(guan)機,最(zui)后關(guan)(guan)上(shang)穩壓(ya)器(qi)(qi)的開(kai)關(guan)(guan)。