穩壓器的作用

穩(wen)壓(ya)器是使輸出電(dian)(dian)(dian)壓(ya)穩(wen)定的設備。穩(wen)壓(ya)器調壓(ya)電(dian)(dian)(dian)路(lu)、控制電(dian)(dian)(dian)路(lu)、及伺服電(dian)(dian)(dian)機(ji)等組(zu)成。當(dang)輸入電(dian)(dian)(dian)壓(ya)或負載變(bian)化時，控制電(dian)(dian)(dian)路(lu)進行取樣(yang)、比(bi)較、放大(da)，然后(hou)驅動(dong)伺服電(dian)(dian)(dian)機(ji)轉動(dong)，使調壓(ya)器碳(tan)刷的位置改變(bian)，通過自動(dong)調整線圈(quan)匝數比(bi)，從而保持輸出電(dian)(dian)(dian)壓(ya)的穩(wen)定。家用穩(wen)壓(ya)器的作用：

1.能(neng)把低(di)壓125V－165V或高(gao)壓250V－270V的(de)電壓穩定(ding)在200－230V之間(jian)，使(shi)家用電器能(neng)正常工作；

2.當輸入電壓(ya)高(gao)于255-275V或低于125-160V時，能自動切斷電源；

3.在斷電之后(hou)又突然來電時，可以延時5－8分鐘啟動輸出電源(yuan)，避免(mian)因(yin)為電壓過高使電器受到損傷(shang)。在選購(gou)家用穩壓器時一定要注意上述三種基(ji)本功能的完(wan)備與否。

穩壓器工作原理

由于部(bu)分電(dian)(dian)器中含有線圈組件，在通電(dian)(dian)初(chu)期(qi)會產生(sheng)阻礙電(dian)(dian)流的渦流，渦流的產生(sheng)既(ji)會削弱到電(dian)(dian)器啟(qi)動時(shi)的瞬時(shi)電(dian)(dian)壓(ya)(ya)，導致(zhi)啟(qi)動緩慢，又(you)會加強斷路(lu)后產生(sheng)的瞬時(shi)電(dian)(dian)壓(ya)(ya)，可能產生(sheng)火(huo)花損壞電(dian)(dian)路(lu)。此時(shi)便需(xu)要一個(ge)穩(wen)壓(ya)(ya)器來保(bao)護電(dian)(dian)路(lu)的正常運行(xing)。

穩壓器由調壓電(dian)(dian)(dian)(dian)路、控制電(dian)(dian)(dian)(dian)路、及伺(si)服(fu)電(dian)(dian)(dian)(dian)機等組成，當輸入電(dian)(dian)(dian)(dian)壓或負(fu)載變化時，控制電(dian)(dian)(dian)(dian)路進行取(qu)樣、比較、放大，然后驅(qu)動(dong)伺(si)服(fu)電(dian)(dian)(dian)(dian)機轉動(dong)，使調壓器碳刷的位置改(gai)變，通過自動(dong)調整(zheng)線圈(quan)匝數比，從而(er)保(bao)持輸出電(dian)(dian)(dian)(dian)壓的穩定。容量較大的穩壓器，還采用電(dian)(dian)(dian)(dian)壓補償的原理工作。

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