Hom fais fab mov thiab DC voltage theem hauv hluav taws xob tswj tshuab
Nrog rau qhov nce kev nyab xeeb ntawm kev tswj lub voj hauv lub tshuab hluav taws xob, kev ua haujlwm ntawm lub voj voog tswj tau dhau los ua ntau dua thiab qis dua DC. Yog li ntawd, muaj ntau thiab ntau cov khoom siv hluav taws xob xws li sensors siv DC fais fab mov, me me, nruab nrab thiab micro DC relays nyob rau hauv cov tswj Circuit Court. Vim li no, muaj kev hloov pauv ntau dua ntawm cov khoom siv hluav taws xob sib txawv hauv kev tswj hluav taws xob. Vim tias nws koom nrog kev ua haujlwm ib txwm ua ntawm tag nrho lossis feem ntau ntawm cov kev tswj xyuas, nws yog qhov tsim nyog rau peb kom nkag siab qee qhov kev paub txog kev hloov cov khoom siv hluav taws xob.
Ua ntej tshaj plaws, cia peb saib cov hom kev hloov pauv hluav taws xob hauv cov tshuab hluav taws xob.
Raws li qhov sib txawv ntawm kev sib raug zoo ntawm qhov thib ob winding ntawm lub zog hloov hluav taws xob thiab cov thawj winding, lub zog hloov hluav taws xob tuaj yeem muab faib ua ob pawg: hom flyback thiab tus kheej zoo siab hom. Vim hais tias lub flyback switching fais fab mov muaj qhov zoo ntawm cov qauv hluav taws xob ruaj khov, kev ruaj ntseg zoo thiab kev ntseeg siab, thiab tus nqi qis, nws muaj ntau dua nyob rau hauv kev tswj hluav taws xob tam sim no (ntxiv: cov kev sib txuas hloov hluav taws xob siv hluav taws xob siv hauv qee lub tshuab hluav taws xob tswj tau zoo heev. Ib feem ntawm nws kuj yog flyback switching fais fab mov Circuit Court.
Txawm li cas los xij, vim muaj kev txwv ntawm txoj cai ua haujlwm ntawm flyback switching fais fab mov, nws cov zis muaj peev xwm feem ntau yog nruab nrab ntawm kaum ntawm VA thiab ntau pua VA, thiab muaj tsawg heev cov khoom ntau tshaj 1 kVA hauv kev xyaum. Cov phooj ywg txaus siab tuaj yeem saib xyuas qhov hloov pauv hluav taws xob hauv ib puag ncig ib puag ncig. Yog tias koj pom tias cov qauv sib xyaw ua ke nws siv yog UC3842/43/44/45, nws yog ib qho qauv ntawm flyback switching fais fab mov. lus).
Los ntawm txoj kev, feem ntau ntawm cov hloov hluav taws xob hloov hluav taws xob nyob rau hauv ntau yam khoom siv hluav taws xob hauv kev lag luam xws li zaus converters thiab servo controllers yog flyback.
Tom ntej no, cia peb saib cov teeb meem ntsig txog cov tswv yim thiab cov zis voltages ntawm kev hloov cov khoom siv fais fab. Vim tias qee qhov kev hloov hluav taws xob hloov chaw tsim khoom tsis yog tsuas yog ntsib lub lag luam hauv tsev, tab sis kuj coj mus rau hauv tus account European, Asmeskas thiab Nyiv kev lag luam, yog li ib qho kev hloov hluav taws xob muaj ob theem hluav taws xob ntawm AC110V thiab AC220V tib lub sijhawm. Hom kev hloov hluav taws xob no feem ntau yog siv los xaiv qhov kev xaiv hloov ntawm lub rooj tsav xwm hauv Circuit Court kom ua tiav qhov kev xaiv qib voltage. Vim li no, peb yuav tsum xyuas seb qhov kev hloov pauv ntawm qhov hluav taws xob hloov pauv ntawm cov khoom siv hluav taws xob hloov pauv puas yog qhov tseeb input voltage ua ntej kev teeb tsa thiab siv, txwv tsis pub nws yooj yim heev los ua kev puas tsuaj rau lub zog hloov hluav taws xob!
Tom ntej no, cia peb saib cov qib DC voltage uas feem ntau siv hauv kev ua haujlwm tiag tiag. Ua ke nrog qhov teeb meem tiag tiag, peb feem ntau tuaj ntsib nrog plaub theem DC voltage hauv qab no hauv peb txoj haujlwm:
1. ntxiv rau 5V: Qhov hluav taws xob no feem ntau yog muab rau hauv pawg tswj hwm uas muaj ib lub tshuab microcomputer hauv lub tshuab hluav taws xob tswj, thiab qee qhov ntsuas LED;
2. ntxiv rau 12V: Qhov hluav taws xob no tau siv dav hauv kev tswj hwm kev lag luam, thiab nws cov khoom siv hluav taws xob suav nrog cov kev sib txuas sib txuas, cov sensors infrared, cov khoom hauv lub xeev relays, me me electromagnetic relays, thiab lwm yam;
3. ntxiv rau 15V: Qhov hluav taws xob no feem ntau yog siv los ntawm ntau yam kev ntsuas ntsuas, tab sis nws tsis yog ntau heev hauv kev xyaum;
4. ntxiv rau 24V: qhov voltage theem ntawm lub Circuit Court no yog tib yam li ntxiv rau 12V, thiab nws kuj yog heev siv nyob rau hauv hluav taws xob tswj systems. Ntxiv rau qhov ntau yam khoom nqa los ntawm ntxiv rau 12V, ntxiv rau 24V lub zog hluav taws xob kuj yog lub luag haujlwm rau lub zog ntawm ntau lub vijtsam kov, cov ntawv kho, kov cov khoom tswj txhua qhov hauv ib lub tshuab thiab lwm yam khoom siv.
Raws li ib txwm muaj, hloov cov khoom siv hluav taws xob nrog ob qhov hluav taws xob tso zis ntau ntxiv ntawm 12V thiab ntxiv rau 24V feem ntau yog siv rau hauv kev tswj hluav taws xob. Txawm li cas los xij, nws yuav tsum tau taw qhia tias nyob rau hauv kev siv tiag tiag ntawm cov txheej txheem tswj, feem ntau vim yog cov khoom tswj sib txawv, txhawm rau tiv thaiv cov yam tsis zoo xws li kev cuam tshuam, "GND / COM" terminals ntawm qhov sib txawv voltage theem ntawm cov zis davhlau ya nyob twg. ntawm cov khoom siv hluav taws xob hloov pauv kuj tau muab faib ua ntau thiab ywj siab. Ob hom qauv. Thaum xaiv los siv, peb yuav tsum xaiv siv raws li lub hom phiaj ntawm qhov teeb meem ntawm qhov tseeb.
Thaum kawg, cia kuv tham txog ib qho teeb meem uas xav tau kev saib xyuas tshwj xeeb hauv kev siv cov khoom siv hluav taws xob hloov. Thaum tsav tsheb electromagnetic relays thiab lwm yam inductive loads uas yuav ua rau muaj zog heev rov qab electromotive quab yuam (sib npaug rau) thaum lub sij hawm ntawm tig tawm, peb yuav tsum tau siv qhov no ob kawg ntawm lub kauj ntawm lub hom ntawm cov cuab yeej no reversed thiab ib tug diode (feem ntau. tus qauv yog 1N4007) yog siv los tso tawm lub zog rov qab electromotive. Lub diode no hu ua freewheeling diode. Tom qab ntawd zam kev puas tsuaj rau lub zog hloov pauv!
