穩壓器的原理
最(zui)初(chu)的(de)電(dian)(dian)(dian)力(li)(li)穩(wen)壓(ya)器是(shi)靠繼(ji)電(dian)(dian)(dian)器的(de)跳動(dong)(dong)穩(wen)定電(dian)(dian)(dian)壓(ya)的(de),當(dang)電(dian)(dian)(dian)網電(dian)(dian)(dian)壓(ya)出現波動(dong)(dong)時,電(dian)(dian)(dian)力(li)(li)穩(wen)壓(ya)器的(de)自動(dong)(dong)糾正電(dian)(dian)(dian)路啟動(dong)(dong),使(shi)(shi)內(nei)部繼(ji)電(dian)(dian)(dian)器動(dong)(dong)作。迫使(shi)(shi)輸(shu)出電(dian)(dian)(dian)壓(ya)保持在設(she)定值(zhi)附(fu)近,這種(zhong)電(dian)(dian)(dian)路優點是(shi)電(dian)(dian)(dian)路簡單(dan),缺點是(shi)穩(wen)壓(ya)精度不高并且每一次繼(ji)電(dian)(dian)(dian)器跳動(dong)(dong)換擋,都會使(shi)(shi)供電(dian)(dian)(dian)電(dian)(dian)(dian)源發生(sheng)一次瞬時的(de)中(zhong)斷并產(chan)生(sheng)火花干擾(rao)。
現(xian)在的穩(wen)壓(ya)(ya)器工(gong)作原理比(bi)較(jiao)簡單,它是由調(diao)壓(ya)(ya)電路(lu)、控(kong)制(zhi)(zhi)電路(lu)、及伺(si)服電機(ji)等部件組成(cheng),當(dang)輸(shu)入電壓(ya)(ya)或(huo)負(fu)載變化時,控(kong)制(zhi)(zhi)電路(lu)進行取樣(yang)、比(bi)較(jiao)、放大(da),然后驅(qu)動(dong)伺(si)服電機(ji)轉動(dong),使調(diao)壓(ya)(ya)器碳刷的位(wei)置改變,通過自動(dong)調(diao)整(zheng)線圈匝數比(bi),從而保持(chi)輸(shu)出電壓(ya)(ya)的穩(wen)定。容(rong)量較(jiao)大(da)的穩(wen)壓(ya)(ya)器,還采用電壓(ya)(ya)補償的原理工(gong)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(shua)的(de)方法穩定(ding)電壓,這種穩壓器(qi)對(dui)電器(qi)設(she)備產生(sheng)的(de)干擾很小穩壓精度相對(dui)較高。
穩壓器怎么使用
先把電(dian)器的(de)電(dian)源接(jie)在(zai)穩壓(ya)(ya)(ya)器上,然后再打開穩壓(ya)(ya)(ya)器的(de)電(dian)源開關(guan),檢(jian)測是(shi)否(fou)可以正常使(shi)用,檢(jian)測完(wan)后就可以將(jiang)大功(gong)率負載接(jie)在(zai)穩壓(ya)(ya)(ya)器上了。注意,當電(dian)器長時(shi)間不用時(shi),要(yao)把穩壓(ya)(ya)(ya)器的(de)電(dian)源切斷,這樣才能延長穩壓(ya)(ya)(ya)器的(de)使(shi)用壽(shou)命。
穩壓器的保養方法
1、穩(wen)壓(ya)器的功率應大于(yu)用(yong)(yong)電設備(bei)的總功率,使用(yong)(yong)時,應放置在(zai)通風、干(gan)燥(zao)、無(wu)陽(yang)光直射、無(wu)腐蝕性(xing)氣體的室內使用(yong)(yong)。
2、經常觀察穩壓(ya)器的冷卻風扇和傳(chuan)動機構是否運(yun)行正常,查看輸入電壓(ya)和負載(zai)是否超過額定范圍,發現(xian)異常及時處(chu)理。
3、穩壓(ya)(ya)器開(kai)(kai)關(guan)(guan)不宜作設備的總開(kai)(kai)關(guan)(guan)使用(yong),使用(yong)時,應先打開(kai)(kai)穩壓(ya)(ya)器開(kai)(kai)關(guan)(guan),待有電源輸出后,再(zai)依次從(cong)按功率(lv)小到(dao)大(da)接上(shang)不同的用(yong)電設備,關(guan)(guan)機(ji)(ji)時從(cong)大(da)到(dao)小關(guan)(guan)機(ji)(ji),最后關(guan)(guan)上(shang)穩壓(ya)(ya)器的開(kai)(kai)關(guan)(guan)。