穩壓器的作用

穩(wen)壓(ya)器是(shi)使輸(shu)出電(dian)(dian)(dian)壓(ya)穩(wen)定的設備。穩(wen)壓(ya)器調(diao)壓(ya)電(dian)(dian)(dian)路、控制電(dian)(dian)(dian)路、及伺(si)服電(dian)(dian)(dian)機等組(zu)成。當輸(shu)入電(dian)(dian)(dian)壓(ya)或負載(zai)變(bian)化時，控制電(dian)(dian)(dian)路進行(xing)取樣、比(bi)較、放(fang)大，然后驅動伺(si)服電(dian)(dian)(dian)機轉(zhuan)動，使調(diao)壓(ya)器碳刷的位置(zhi)改變(bian)，通過(guo)自動調(diao)整線(xian)圈匝數比(bi)，從而保持輸(shu)出電(dian)(dian)(dian)壓(ya)的穩(wen)定。家用穩(wen)壓(ya)器的作用：

1.能把低壓(ya)(ya)125V－165V或高(gao)壓(ya)(ya)250V－270V的電(dian)壓(ya)(ya)穩定在(zai)200－230V之間，使家用電(dian)器能正常工作；

2.當輸入(ru)電壓高于255-275V或低于125-160V時，能(neng)自動(dong)切斷電源；

3.在(zai)斷(duan)電之后又(you)突然(ran)來電時，可以延時5－8分鐘(zhong)啟動輸出電源，避免因為電壓(ya)過高使電器受到損傷。在(zai)選購家(jia)用穩壓(ya)器時一定要(yao)注意上述三(san)種基本功能(neng)的完備(bei)與否。

穩壓器工作原理

由于部分電(dian)(dian)器中含(han)有線圈組件，在通(tong)電(dian)(dian)初期會(hui)產(chan)(chan)(chan)生(sheng)(sheng)阻礙電(dian)(dian)流的渦流，渦流的產(chan)(chan)(chan)生(sheng)(sheng)既會(hui)削弱到電(dian)(dian)器啟(qi)動時的瞬(shun)時電(dian)(dian)壓(ya)(ya)，導致啟(qi)動緩(huan)慢，又會(hui)加強(qiang)斷路后產(chan)(chan)(chan)生(sheng)(sheng)的瞬(shun)時電(dian)(dian)壓(ya)(ya)，可能產(chan)(chan)(chan)生(sheng)(sheng)火花損壞電(dian)(dian)路。此時便需要(yao)一(yi)個穩壓(ya)(ya)器來保護電(dian)(dian)路的正常(chang)運行。

穩壓(ya)(ya)(ya)器由調壓(ya)(ya)(ya)電(dian)(dian)路、控制電(dian)(dian)路、及伺服(fu)電(dian)(dian)機等組(zu)成，當輸(shu)(shu)入電(dian)(dian)壓(ya)(ya)(ya)或(huo)負(fu)載變化(hua)時，控制電(dian)(dian)路進行取樣、比(bi)較、放大，然后驅(qu)動(dong)伺服(fu)電(dian)(dian)機轉動(dong)，使(shi)調壓(ya)(ya)(ya)器碳刷的(de)位置改(gai)變，通過(guo)自動(dong)調整線圈匝數(shu)比(bi)，從(cong)而保持輸(shu)(shu)出電(dian)(dian)壓(ya)(ya)(ya)的(de)穩定。容量(liang)較大的(de)穩壓(ya)(ya)(ya)器，還(huan)采(cai)用(yong)電(dian)(dian)壓(ya)(ya)(ya)補償的(de)原(yuan)理工作(zuo)。

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