Qhov sib txawv ntawm linear fais fab mov thiab switching fais fab mov
Lub raj hloov kho ntawm cov khoom siv hluav taws xob tawm ua haujlwm hauv lub xeev loj, yog li nws tsim hluav taws xob ntau thiab muaj kev ua haujlwm tsawg (kwv yees li 35 feem pua). Nws yuav tsum tau ntxiv ib lub dab dej loj loj, thiab tseem xav tau lub zog loj zaus transformer. Thaum ua ntau yam ntawm cov zis voltage transformer yuav loj dua.
Lub raj hloov pauv ntawm lub zog hloov hluav taws xob ua haujlwm hauv lub xeev saturated thiab txiav tawm, yog li tus nqi calorific me me, qhov ua tau zoo yog siab (tshaj li 75 feem pua) thiab qhov loj-volume transformer tau txais kev cawmdim. Txawm li cas los xij, ib qho loj ripple (50mVat5Voutputtypical) yuav raug superimposed ntawm DC tso zis ntawm lub zog hloov hluav taws xob, uas tuaj yeem txhim kho los ntawm kev sib txuas ntawm Zener diode nyob rau hauv parallel ntawm cov zis kawg. Tsis tas li ntawd, vim hais tias lub raj xa hluav taws xob yuav ua rau muaj kev cuam tshuam loj heev, nws kuj yuav tsum tau txuas nrog hauv series hauv Circuit Court. Txawm sib nqus hlaws los txhim kho. Hais txog kev hais lus, cov khoom siv hluav taws xob linear tsis muaj qhov tsis xws li saum toj no, thiab nws cov ripple tuaj yeem ua rau me me (hauv qab 5mV).
Nws yog qhov zoo dua los siv cov khoom siv hluav taws xob hloov hluav taws xob uas muaj cov kev xav tau rau cov khoom siv hluav taws xob thiab kev teeb tsa lub ntim, thiab rau qhov chaw uas yuav tsum muaj kev cuam tshuam ntawm electromagnetic cuam tshuam thiab lub zog hluav taws xob purity (xws li capacitance to detection), linear power supply feem ntau yog siv. Tsis tas li ntawd, thaum yuav tsum muaj kev sib cais hauv Circuit Court, DC-DC tam sim no feem ntau yog siv los muab lub zog rau qhov kev sib cais (DC-DC yog qhov hloov hluav taws xob raws li nws txoj hauv kev ua haujlwm). Tsis tas li ntawd, cov high-frequency transformers siv nyob rau hauv switching fais fab mov tej zaum yuav cumbersome rau cua.
Hloov fais fab mov thiab linear fais fab mov yog txawv kiag li nyob rau hauv cov qauv. Raws li lub npe qhia, switching power supply muaj switching action. Nws siv lub luag haujlwm sib txawv los yog hloov pauv zaus kom ua tiav qhov sib txawv voltages. Kev paub yog qhov nyuaj dua. Qhov zoo tshaj plaws yog kev ua haujlwm siab. Ntau tshaj 90 feem pua , qhov tsis zoo yog cov ntawv yoj thiab hloov suab nrov yog qhov loj, uas yog tsim rau lub sijhawm uas tsis xav tau cov ntawv yoj thiab suab nrov; thaum cov khoom siv hluav taws xob linear tsis muaj qhov hloov pauv, uas belongs rau kev tswj hwm kev sib txuas txuas ntxiv, cov qauv sab hauv yog qhov yooj yim, thiab cov nti cheeb tsam kuj yog me me. Tus nqi qis, qhov zoo yog tus nqi qis, cov ntawv tsis tshua muaj suab nrov, thiab qhov tsis zoo tshaj plaws yog kev ua haujlwm tsawg. Lawv muaj lawv tus kheej shortcomings thiab ntxiv ib leeg nyob rau hauv daim ntawv thov!
