Yam dab tsi yuav tsum tau xav txog thaum xaiv lub hwj huam hloov pauv
Peb yuav tsum tau ceev faj thiab xav txog ntau txoj cai hais txog kev xaiv cov hloov fais fab modules. Piv txwv li, tus nqi nominal ntawm stabilizing hlau yog 1A, uas yog hais txog txoj cai ntawm 25 degrees Celsius. Txawm li cas los xij, yog tias cov cuab yeej ua haujlwm ntawm 50 degrees Celsius, tus nqi nominal ntawm stabilizing hlau yuav qis dua 1A, thiab cov npoo rau kev daws ntawm qhov kub no yuav tsum loj dua me ntsis. Ib yam li ntawd, 1mH ntawm ib qho inductor tsis yog 1mH ib txwm. Nws yog nyob ntawm 1 kHz. Piv txwv tias koj siv nws ntawm 1MHz, tus nqi ntawm 1mH inductor xa los ntawm cov chaw tsim khoom tsis yog 1mH. Vim muaj qhov cuam tshuam loj ntawm kev tawg ntawm lub peev xwm hauv inductor coil ntawm 1M, qee qhov cuam tshuam ntawm inductance yuav raug offset. Qhov kev poob qis IL ntawm lub lim yog 25dB, uas yog lub sijhawm thaum MHz Rs / RL =50 ohms (qhov chaw impedance thiab load impedance). Txawm li cas los xij, hauv kev xyaum, nws yog qhov nyuaj rau kev ua tiav impedance kom ua tau raws li qhov yuav tsum tau ua hauv daim ntawv thov ntawm peb cov lim, yog li 25dB qhov ntxig yuav ua rau poob loj. Sib nqus hlaws, capacitors, diodes, resistors ... txhua tus muaj cov cai zoo sib xws. Tom ntej no, cia peb tham txog cov cai rau kev xaiv hloov fais fab modules, sib nrug ntawm tus nqi. Muaj ntau cov qauv topological rau lub zog modules, suav nrog flyback, rau pem hauv ntej, thawb-rub, ib nrab choj, thiab tag nrho tus choj, txhua tus muaj qhov zoo ntawm qee yam yam ntxwv vim nws cov qauv sib txawv.
Ntawm no peb yuav piav qhia txog kev siv cov cai ntawm ntau yam kev tsim kho topological. Qhov teeb meem tseem ceeb yog lub flyback fais fab mov, uas tsis tso tawm thaum lub sij hawm them nyiaj hauv ib lub voj voog hloov. Vim yog tus yam ntxwv no, nws qhov kev saib xyuas tas li thiab cov yam ntxwv ripple yog qhov nyuaj kom ua tiav cov txiaj ntsig zoo. Txawm hais tias nws tuaj yeem ua haujlwm nrog kev pab los ntawm lub zog loj cia capacitors, qhov tsis zoo ntawm qhov kawg yog qhov nyuaj. Kev txawj ntse tsis txaus tuaj yeem them rov qab los ntawm kev ua haujlwm hnyav, tab sis thaum ntsib teeb meem tseem ceeb, nws tsis tuaj yeem kov yeej qee qhov teeb meem. Kuj tseem muaj cov teeb meem xws li kev xau siab inductance, tab sis nws cov txiaj ntsig muaj xws li ib qho yooj yim Circuit Court, tsis tshua muaj nqi, me me, tsis tas yuav ntxiv cov hlau nplaum reset windings, thiab dav input voltage scheme. Nws yog qhov tseeb vim qhov no tias nws suav txog ntau dua 70% ntawm tag nrho cov khoom siv hluav taws xob.
Tom ntej no, cia peb tham txog cov qauv topology ntawm lwm yam kev hloov pauv hloov pauv hloov hluav taws xob hauv lub khw muag khoom hluav taws xob. Cov yam ntxwv ntawm kev hloov pauv hloov pauv ntawm qhov tso zis hluav taws xob ntawm lub zog xa mus rau pem hauv ntej yog qhov zoo, thiab kev hloov kho lub zog muaj zog. Txawm li cas los xij, nws qhov tsis zoo kuj tseem ceeb, xws li kev siv lub zog loj cia lim inductor thiab lub diode freewheeling, loj ntim, siab rov qab electromotive quab yuam voltage ntawm transformer thawj kauj, thiab siab yuav tsum tau rau lub switching tube (kev puas tsuaj yooj yim). . Push rub fais fab mov muaj kev saib xyuas tam sim no siab ceev thiab zoo heev voltage tso zis yam ntxwv. Ntawm tag nrho cov kev tsim kho topology, nws yog qhov siv dav tshaj plaws hloov hluav taws xob, tsis muaj qhov to thiab yooj yim tsav Circuit Court. Tab sis nws qhov tsis zoo yog tias ob lub cuab yeej hloov pauv yuav tsum muaj qhov ntsuas qhov ntsuas siab; Muaj ob pawg thawj coils yog qhov tsis zoo rau cov khoom siv hluav taws xob tsawg-rub-rub cov khoom siv hluav taws xob. Yog hais tias ob qho tib si rau pem hauv ntej converters tsis yog tag nrho symmetrical los yog sib npaug, qhov sib npaug ntawm kev sib tw tom qab ob peb lub voj voog yuav ua rau cov tub ntxhais sib nqus ua kom puv, ua rau muaj kev cuam tshuam ntau dhau ntawm lub tshuab hluav taws xob ntau zaus thiab kev puas tsuaj rau lub raj xa mus. Tus choj hloov fais fab mov muaj lub zog tso zis ntau thiab lub zog ua haujlwm siab. Qhov hluav taws xob tiv taus tus nqi ntawm lub raj hloov pauv yuav tsum tau qis, thiab tsuas yog ib qho winding yog xav tau rau thawj kauj ntawm transformer. Qhov tsis zoo yog lub zog qis, ua rau thaj tsam semi conductive thiab poob siab.
