Muaj nuj nqi thiab kev faib tawm ntawm transformers
Ua ntej qhia txog kev hloov pauv hloov hluav taws xob hloov pauv, peb yuav tsum xub nkag siab lub tswv yim ntawm lub zog hloov hluav taws xob. Vim hais tias yav dhau los yog ib qho cuab yeej uas ntxiv ib qho kev hloov rau saum lub hwj chim transformer, nws lub hom phiaj tseem ceeb tsis tau hloov. Tab sis lub zog ntawm no hom tshiab ntawm transformer yog txawv heev los ntawm cov zoo tib yam transformers. Feem ntau, nyob rau hauv circuits, hom transformer no tsis tau tsuas yog muaj lub tswv yim muaj nuj nqi ntawm converting voltage nrog zoo tib yam transformers, tab sis kuj muaj rwb thaiv tsev cais thiab coj lub hwj chim kis tau tus mob functions. Hom transformer no feem ntau yog siv los hloov cov khoom siv hluav taws xob rau ntau lub voj voog ntau zaus. Yog li dab tsi yog lub luag haujlwm tshwj xeeb ntawm cov khoom no? Nws kev faib tawm yog dab tsi? Tam sim no cia kuv qhia rau koj.
Rau transformers, lawv yog cov khoom siv uas tuaj yeem hloov hluav taws xob. Feem ntau peb kuj hu nws lub hwj chim transformer. Txawm li cas los xij, qhov sib txawv ntawm lub zog hloov pauv hloov pauv thiab lwm yam hloov pauv yog tias nws muaj qhov hloov pauv hloov pauv ntxiv piv rau cov hloov pauv tsis tu ncua. Nyob rau hauv txoj kev no, tus kheej-excited intermittent oscillator yog tsim, uas nws muaj nuj nqi yog los kho cov input DC voltage rau hauv high-frequency mem tes voltage ua ntej outputting.
Ntxiv nrog rau cov haujlwm saum toj no, cov khoom no kuj muaj lub luag haujlwm tseem ceeb dua, uas yog kev sib kis thiab kev hloov pauv ntawm lub zog. Nyob rau hauv lub flyback Circuit Court, thaum peb ua lub switching transistor, tus coj transformer converts hluav taws xob zog mus rau hauv ib tug sib nqus teb thiab khaws cia rau ua. Thaum peb disconnect lub raj hloov, ntawm qhov tsis sib xws, lub magnetic teb kuj yuav hloov mus rau hauv hluav taws xob lub zog.
Yog li yuav ua li cas nws ua hauj lwm nyob rau hauv pem hauv ntej circuits? Ua ntej, thaum peb ua qhov hloov pauv hloov pauv, cov khoom siv hluav taws xob cuam tshuam yuav raug siv los muab cov khoom thauj ncaj qha, thaum tseem khaws cia lub zog los ntawm inductance. Thaum peb disconnect lub hloov raj, hluav taws xob lub zog yuav raug xa mus rau lub load los ntawm lub zog cia inductor.
Thaum kawg, lub zog hloov hluav taws xob hloov pauv tuaj yeem hloov pauv qhov hluav taws xob DC tuaj, yog li tso tawm ntau qhov ntau thiab tsawg ntawm qhov tsis tshua muaj hluav taws xob. Peb tau tham txog nws txoj haujlwm tiav lawm, yog li nws qhov kev faib tawm yog dab tsi?
Feem ntau hais lus
Hloov fais fab transformers tuaj yeem muab faib ua ob hom: ib leeg zoo siab thiab ob leeg zoo siab. Cov qauv ntawm ob qhov kev faib tawm no txawv, thiab lawv cov qauv kev ua haujlwm kuj txawv heev. Ib hom excitation tuaj yeem nkag mus rau unipolar pulses thiab tso tawm rau pem hauv ntej thiab rov qab voltage; Qhov sib txawv ntawm ob excitation thiab bipolar excitation yog qhov input pulse yog bipolar, thiab feem ntau ntawm lawv tso zis bipolar mem tes voltage.
Los ntawm cov ntawv sau saum toj no, ntau tus phooj ywg tau nkag siab qee yam ntawm transformers. Rau kev hloov pauv hloov hluav taws xob hloov pauv, tsis yog nws ntxiv qhov txawv ntawm lub zog hloov pauv, tab sis qee qhov ntawm nws daim ntawv thov tau dhau los ua ntau dua. Tsis tas li ntawd, rau qee qhov kev siv tshwj xeeb, lub zog hloov hluav taws xob nrog cov cuab yeej no tuaj yeem hloov hluav taws xob raws li qhov xav tau, ua tiav cov teebmeem kev lag luam uas ua tau raws li ntau hom kev xav tau ntawm qhov hluav taws xob.
