Kev daws rau Electromagnetic Compatibility ntawm Stabilized Power Supply
Los ntawm qhov kev xav ntawm peb lub ntsiab lus ntawm electromagnetic compatibility, los daws qhov teeb meem ntawm electromagnetic compatibility ntawm kev hloov cov khoom siv fais fab, peb tuaj yeem pib los ntawm peb yam: ua ntej, txo cov teeb liab cuam tshuam los ntawm qhov chaw cuam tshuam; thib ob, txiav tawm txoj kev nthuav tawm ntawm cov teeb liab cuam tshuam; thib peb, Txhim khu lub peev xwm tiv thaiv kev ua phem ntawm lub cev thab plaub. Thaum daws qhov sib xyaw ua ke ntawm cov khoom siv hluav taws xob hloov hluav taws xob, cov txheej txheem saum toj no tuaj yeem siv tau dav, raws li tus nqi-cov txiaj ntsig piv thiab qhov yooj yim ntawm kev siv. Yog li ntawd, cov kev cuam tshuam sab nraud tsim los ntawm kev hloov cov khoom siv hluav taws xob, xws li cov kab hluav taws xob sib haum xeeb, cov kab hluav taws xob cuam tshuam, thiab hluav taws xob hluav taws xob hluav taws xob cuam tshuam, tsuas yog daws tau los ntawm kev txo qhov cuam tshuam. Ntawm qhov tod tes, nws tuaj yeem txhim kho tus qauv tsim ntawm lub tswv yim / tso zis lim Circuit Court, txhim kho kev ua haujlwm ntawm APFC Circuit Court, txo qhov voltage thiab tam sim no hloov tus nqi ntawm lub raj hloov, rectifier thiab freewheeling diode, thiab txais yuav ntau yam mos switching circuit topologies. thiab tswj txoj kev, thiab lwm yam; Lwm qhov ntawm ib sab, ntxiv dag zog rau kev tiv thaiv kev tiv thaiv ntawm lub casing, txhim kho qhov sib txawv ntawm lub casing, thiab ua haujlwm zoo hauv av. Rau kev muaj peev xwm tiv thaiv kev cuam tshuam sab nraud (xws li surges thiab xob laim tawm tsam), lub peev xwm tiv thaiv xob laim ntawm AC input thiab DC output ports yuav tsum tau ua kom zoo dua. Feem ntau, rau qhov sib xyaw ua ke ntawm xob laim tawm tsam ntawm 1.2 / 50μs qhib-circuit voltage thiab 8/20μs luv-circuit tam sim no, vim lub zog me me, feem ntau yog daws los ntawm kev sib txuas zinc oxide varistors thiab roj square hluav taws xob raj. Rau electrostatic paug, feem ntau yog nyob rau hauv lub me me teeb liab Circuit Court ntawm qhov chaw nres nkoj kev sib txuas lus thiab kev tswj chaw nres nkoj, siv TVS raj thiab coj grounding tiv thaiv, ua rau kom cov hluav taws xob nyob deb ntawm lub me me teeb liab Circuit Court thiab lub chassis, thiab lwm yam. static cuam tshuam. Lub teeb liab ceev ceev muaj qhov dav zaus spectrum, thiab nws yog ib qho yooj yim kom dhau mus rau hauv kev tswj Circuit Court nyob rau hauv daim ntawv ntawm ntau hom. Tib txoj hauv kev los tiv thaiv zoo li qub yog siv los txo qhov kev faib tawm ntawm cov hom hom inductance thiab ntxiv dag zog rau cov hom teeb liab lim ntawm cov khoom siv hluav taws xob (ntxiv rau Hom Hom capacitors lossis qhov ntxig poob ferrite cores, thiab lwm yam) txhawm rau txhim kho kev tiv thaiv kab mob. ntawm qhov system.
Txhawm rau txo qhov cuam tshuam sab hauv ntawm kev hloov pauv hluav taws xob, paub txog nws tus kheej electromagnetic compatibility, thiab txhim kho kev ruaj ntseg thiab kev ntseeg siab ntawm kev hloov hluav taws xob, peb yuav tsum pib los ntawm cov hauv qab no: ① Ua tib zoo saib xyuas qhov raug muab faib ntawm cov digital Circuit Court thiab PCB. kev txuas ntawm module Circuit Court; ②Digital Circuit Court thiab Decoupling ntawm analog circuit fais fab mov; ③ Ib qho taw qhia hauv av ntawm digital circuits thiab analog circuits, ib qho taw qhia grounding ntawm high-tam sim no circuits thiab low-tam sim no circuits, tshwj xeeb tshaj yog tam sim no thiab voltage sampling circuits, kom tsis txhob muaj kev cuam tshuam kev cuam tshuam, txo cov kev cuam tshuam ntawm av rings, thiab them sai sai rau thaum thaiv qhov sib nrug ntawm cov kab uas nyob ib sab thiab qhov xwm txheej ntawm lub teeb liab tuaj yeem zam kev sib tham, txo qhov chaw nyob ib puag ncig los ntawm cov zis hluav taws xob rectifier Circuit Court, lub freewheeling diode Circuit Court thiab ceg lim Circuit Court, txo cov to ntawm transformer thiab faib capacitance ntawm lim inductor. , thiab siv high resonance zaus lim capacitors, thiab lwm yam.
