Lub hauv paus ntsiab lus ntawm kev hloov lub raj hauv kev hloov hluav taws xob
Kev tsom xam ntawm kev ua haujlwm ntawm kev hloov lub raj hauv kev hloov hluav taws xob los ntawm lub nplhaib cua sov
Hais lus nruj me ntsis, nws yog cov txheej txheem nyuaj heev rau lub raj hloov pauv kom qhib thiab tawm, tab sis thaum peb txheeb xyuas txoj haujlwm ua haujlwm, peb feem ntau ua kom yooj yim rau qee qhov teeb meem tsis tseem ceeb ua ntej. Piv txwv li, thaum lub hwj chim hloov raj yog qhib los yog tua, peb suav hais tias nws yog ib qho zoo tagnrho hloov, thiab tsuas muaj ob lub xeev thaum nws ua hauj lwm, on los yog off. Tab sis qhov tseeb, kev hloov ntawm thiab tawm ntawm lub raj hloov pauv yog txheej txheem nyuaj heev. Dhau li ntawm kev hloov mus rau lossis tawm, kuj tseem muaj qhov teeb meem uas tsis tuaj yeem tsis quav ntsej ntawm qhov ntau zaus, uas yog, thaum lub raj hloov pauv tau qhib, nws yog cov txheej txheem ua haujlwm los ntawm qhov chaw txiav tawm mus rau thaj chaw amplification, thiab tom qab ntawd los ntawm qhov chaw ua haujlwm. amplification cheeb tsam mus rau qhov chaw saturation. Cov txheej txheem ua haujlwm no yuav tsum tau daws los ntawm kev sib npaug sib txawv, thiab kuv tsis xav qhia nws rau koj nyuaj dhau ntawm no.
Ua kom yooj yim, nws yuav siv sijhawm los qhib thiab tawm lub hwj chim hloov raj. Feem ntau, lub sijhawm tuj ntawm lub raj hloov pauv tsuas yog muab faib ua lub sijhawm ncua sijhawm td thiab lub sijhawm nce tr, thaum lub sijhawm tawm ntawm lub raj hloov pauv tau muab faib ua lub sijhawm ncua sijhawm tstg (los yog lub sijhawm khaws cia tawm ntawm lub sijhawm) thiab lub sijhawm poob tf.
Nyob rau hauv thawj lub voj voog ua haujlwm ntawm kev hloov hluav taws xob, qhov tso zis hluav taws xob yuav them tus nqi lim lub zog cia capacitor, thiab cov khoom yuav hnyav (lossis sib npaug rau qhov luv luv Circuit Court) vim tias qhov loj them tam sim no. Yog li ntawd, kev hloov pauv hluav taws xob dav dav yuav tsum tau siv cov kev ntsuas muag muag, nrog rau lub luag haujlwm me me thaum pib, thiab tom qab ntawd nws yuav maj mam dhau los ua ib txwm, uas yog, cov zis hluav taws xob yuav me me thaum pib, thiab tom qab ntawd nws yuav maj mam nce. . Los yog thaum pib, qhov kev ua haujlwm voltage kuj tsawg, thiab tom qab ntawd nws maj mam nce mus rau qhov qub nqi.
Kev hais lus nruj me ntsis, kev hloov hluav taws xob ib txwm ua haujlwm nyob rau hauv lub xeev tsis ruaj khov, thiab qhov hu ua kev ruaj ntseg tsuas yog txheeb ze. Piv txwv li, cov txheej txheem voltage stabilization ntawm switching fais fab mov yog zoo li no: thaum cov zis voltage nce, tom qab sampling thiab sib piv, lub sampling Circuit Court yuav tso tawm ib tug yuam kev teeb liab rau lub mem tes dav modulation Circuit Court, uas yuav txo tau lub luag hauj lwm voj voog thiab yog li txo. cov zis voltage; Thaum cov zis hluav taws xob txo qis, tom qab kuaj thiab sib piv, cov qauv ntsuas hluav taws xob yuav tso tawm qhov teeb meem yuam kev rau lub tshuab hluav taws xob pulse dav, uas yuav ua rau cov dej num sib piv thiab yog li ua kom cov zis voltage. Nyob rau hauv txoj kev no, cov zis voltage ntawm lub switching fais fab mov yuav ib txwm viav vias nce thiab nqis ntawm ib tug tej zaus, thiab lub thiaj li hu ua voltage stabilization tsuas yog hais tias qhov nruab nrab tus nqi ntawm cov zis voltage yog kuj ruaj khov.
Tam sim no ntws los ntawm thawj winding ntawm switching transformer tsis yog ib tug ruaj khov tus nqi, thiab nws feem ntau yog ib tug sawtooth yoj, raws li yog cov rectified tso zis tam sim no. Tsav LED nrog qhov tam sim no tsis tu ncua feem ntau txhais tau hais tias cov zis tam sim no ntawm lub lim yog qhov ruaj khov tom qab lim, thiab qhov kev ruaj ntseg no kuj hais txog tus nqi nruab nrab, thaum lub sij hawm nkag ntawm lub lim feem ntau yog sawtooth yoj.
Feem ntau hais lus, thawj lub voj voog ntawm kev hloov hluav taws xob pib los ntawm kev ua haujlwm ntawm lub raj xa hluav taws xob, uas feem ntau yog nyob ntawm qhov chaw uas koj xav txheeb xyuas tau txiav rau hauv. nws tuaj yeem suav hais tias yog pib ua haujlwm sai li sai tau thaum lub hwj huam hloov tau qhib. Yog tias tsim nyog los soj ntsuam cov waveforms ntawm ntau cov ntsiab lus, nws yog ib qho tsim nyog yuav tsum coj lub waveform ntawm ib lub cuab yeej hauv Circuit Court raws li qhov taw qhia (lossis synchronization).
Nyob rau hauv thawj lub voj voog ntawm kev hloov hluav taws xob, cov qauv ntsuas hluav taws xob feem ntau tsis ua haujlwm, vim tias cov zis hluav taws xob tau them tus nqi lim capacitor, thiab nws yuav siv sij hawm ntau lub voj voog kom them rau tus nqi ib txwm, thiab tsuas yog tom qab cov zis hluav taws xob nce mus txog tus nqi qub. tuaj yeem ua haujlwm piv txwv li qub. Txawm li cas los xij, ua ntej cov qauv ntsuas hluav taws xob ua haujlwm ib txwm, nws cov zis hluav taws xob yog sib npaug rau 0, uas kuj yog qhov tshwj xeeb ntawm qhov teeb meem yuam kev tawm (qhov siab tshaj plaws). Nyob rau hauv cov ntaub ntawv no, yog hais tias lub switching fais fab mov tsis muaj soft start circuit, lub luag hauj lwm voj voog ntawm lub switching tube yuav loj heev thaum nws ua hauj lwm, uas yuav yooj yim saturate lub transformer thiab puas lub switching tube.
