穩壓器的原理
最(zui)初的(de)(de)電(dian)(dian)(dian)力(li)穩(wen)(wen)壓(ya)(ya)器(qi)是靠繼(ji)電(dian)(dian)(dian)器(qi)的(de)(de)跳(tiao)動(dong)穩(wen)(wen)定(ding)電(dian)(dian)(dian)壓(ya)(ya)的(de)(de),當電(dian)(dian)(dian)網電(dian)(dian)(dian)壓(ya)(ya)出(chu)現(xian)波動(dong)時(shi),電(dian)(dian)(dian)力(li)穩(wen)(wen)壓(ya)(ya)器(qi)的(de)(de)自動(dong)糾正電(dian)(dian)(dian)路(lu)啟動(dong),使內(nei)部繼(ji)電(dian)(dian)(dian)器(qi)動(dong)作。迫使輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)保持(chi)在設定(ding)值附近,這種電(dian)(dian)(dian)路(lu)優點(dian)是電(dian)(dian)(dian)路(lu)簡單,缺點(dian)是穩(wen)(wen)壓(ya)(ya)精度(du)不(bu)高并且(qie)每一(yi)次(ci)繼(ji)電(dian)(dian)(dian)器(qi)跳(tiao)動(dong)換(huan)擋,都會使供電(dian)(dian)(dian)電(dian)(dian)(dian)源發生一(yi)次(ci)瞬時(shi)的(de)(de)中斷并產生火(huo)花干(gan)擾。
現在的穩壓(ya)(ya)器(qi)工作原理比(bi)較簡單,它是由調(diao)(diao)壓(ya)(ya)電(dian)路(lu)、控(kong)(kong)制電(dian)路(lu)、及伺服電(dian)機(ji)等部(bu)件組(zu)成(cheng),當輸入電(dian)壓(ya)(ya)或負載變(bian)化時,控(kong)(kong)制電(dian)路(lu)進行(xing)取樣(yang)、比(bi)較、放大(da),然后(hou)驅動伺服電(dian)機(ji)轉動,使調(diao)(diao)壓(ya)(ya)器(qi)碳刷的位置改變(bian),通過自動調(diao)(diao)整線圈匝(za)數比(bi),從(cong)而保持輸出(chu)電(dian)壓(ya)(ya)的穩定(ding)。容量較大(da)的穩壓(ya)(ya)器(qi),還采(cai)用電(dian)壓(ya)(ya)補償(chang)的原理工作。
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,大多采用電機拖動碳刷的方法穩定電壓,這種穩壓器對電器設備產生的干擾很小穩壓精度相對較高。
穩壓器怎么使用
先把(ba)電(dian)器(qi)(qi)(qi)的電(dian)源接在穩(wen)壓(ya)器(qi)(qi)(qi)上,然后再打開穩(wen)壓(ya)器(qi)(qi)(qi)的電(dian)源開關,檢(jian)測(ce)是(shi)否可以正常使用,檢(jian)測(ce)完后就可以將大功率(lv)負(fu)載接在穩(wen)壓(ya)器(qi)(qi)(qi)上了。注意(yi),當電(dian)器(qi)(qi)(qi)長時(shi)間不用時(shi),要把(ba)穩(wen)壓(ya)器(qi)(qi)(qi)的電(dian)源切斷,這樣才能延長穩(wen)壓(ya)器(qi)(qi)(qi)的使用壽(shou)命。
穩壓器的保養方法
1、穩(wen)壓器的(de)功(gong)率應大于用(yong)電(dian)設備的(de)總功(gong)率,使用(yong)時,應放置在通(tong)風、干燥、無陽光(guang)直射(she)、無腐蝕(shi)性氣體(ti)的(de)室內使用(yong)。
2、經常觀察穩壓器的冷卻風扇和傳動(dong)機(ji)構(gou)是(shi)否(fou)運行正常,查看輸入電(dian)壓和負載是(shi)否(fou)超過額(e)定范(fan)圍,發現異常及時處(chu)理。
3、穩壓器(qi)開(kai)關(guan)不宜作設(she)備的總(zong)開(kai)關(guan)使用,使用時(shi),應先打開(kai)穩壓器(qi)開(kai)關(guan),待有電源(yuan)輸出后,再依次從按(an)功(gong)率小(xiao)到(dao)大接(jie)上不同的用電設(she)備,關(guan)機時(shi)從大到(dao)小(xiao)關(guan)機,最后關(guan)上穩壓器(qi)的開(kai)關(guan)。