Cov ntsiab lus yooj yim thiab cov ntsiab lus tseem ceeb ntawm hloov lub zog fais fab
Nrog rau kev txhim kho lub zog hluav taws xob tshuab, kev sib raug zoo ntawm cov khoom siv hluav taws xob hauv hluav taws xob thiab cov neeg ua haujlwm thiab lub neej tau dhau los ua kev sib ze. Cov khoom siv hluav taws xob tsis tuaj yeem ua yam tsis muaj peev xwm txhim khu kev qha. Nyob rau xyoo 1980s, khoos phis tawj siv tau hloov pauv hloov hom fais fab cuab yeej, ua rau hloov cov khoom siv hluav taws xob. Nyob rau xyoo 1990, hloov hom fais fab khoom nkag mus rau ntau cov cuab yeej siv hluav taws xob thiab cov khoom siv hluav taws xob, thiab lwm yam ntxiv txhawb nqa hom fais fab cuab yeej technology. Hloov chaw hluav taws xob yog ib hom hluav taws xob muab hluav taws xob uas siv cov hluav taws xob hluav taws xob niaj hnub no los tswj lub sijhawm hloov pauv, tswj cov khoom siv hluav taws xob tsis ruaj khov. Hloov hluav taws xob hluav taws xob feem ntau muaj ntawm cov mem tes dav dav kev ntsuas (PWM) tswj IC thiab Mosfet. Piv rau cov khoom siv hluav taws xob tawm, tus nqi ntawm ob qho hloov hluav taws xob nce nrog kev nce cov zis zog, tab sis lawv cov nqi kev loj hlob muaj sib txawv. Tus nqi ntawm cov khoom siv fais fab linear yog qhov ua tau zoo dua li ntawm kev hloov fais fab fais fab ntawm ib qho zis zog taw tes, uas yog tus nqi thim rov qab taw tes. Nrog rau kev txhim kho thiab kev tsim kho lub zog hluav taws xob tshuab, hloov fais fab kev ua kom muaj zog, muab ntau qhov chaw tsim kho kom hloov cov khoom siv hluav taws xob. Lub siab {13- zaus kev loj hlob ntawm hloov cov khoom siv fais fab yog cov kev taw qhia ntawm lawv txoj kev txhim kho. Cov zog siab ua rau hloov hluav taws xob cov khoom me thiab ua rau lawv nkag mus rau qhov kev thov loj, tshwj xeeb yog kev txhawb nqa lub miniaturization thiab lub teeb ci ntawm high- Tech cov khoom. Ib qho ntxiv, kev txhim kho thiab kev siv ntawm hloov hom hwj huam yog qhov tseem ceeb hauv kev txuag hluav taws xob, kev tiv thaiv kev txuag ib puag ncig.
Hloov cov khoom siv fais fab yog siv los tswj lub tshuab hloov mus los ntawm cov voj voog rau high - ceev ntawm / tawm. Nws hloov ncaj qha tam sim no rau hauv siab- muaj kev hloov kho tam sim no thiab muab cov kev hloov pauv, yog li tsim tawm ntawm cov voltages! Qhov laj thawj rau kev hloov mus rau siab - zaus AC lub zog yog qhov ua tau zoo ntawm kev ua haujlwm siab hauv kev hloov pauv hloov pauv hluav taws xob yog qhov siab dua 50Hz. Yog li ntawd, hloov pauv hloov pauv tuaj yeem ua tau me me thiab tsis kub thaum lub sijhawm ua haujlwm! Tus nqi yog tsawg heev. Yog tias 50Hz tsis hloov dua siab tshiab rau cov siab ntau, tom qab ntawd hloov hluav taws xob tsis muaj qab hau !! Hloov pauv hloov tsis yog qhov tsis paub. Lawv tsuas yog hloov pauv zoo li! Qhov no yog hloov khoom siv fais fab tuag. Hloov cov khoom siv hluav taws xob feem ntau tuaj yeem faib ua ob hom: cais thiab tsis cais. Lub hom cais yuav tsum muaj lub hloov pauv hloov, thaum tsis cais hom tej zaum yuav tsis tas yuav muaj ib qho.
