Yuav ntsuas qhov poob ntawm kev hloov pauv fais fab mov fais fab li cas nrog Digital Oscilloscope
Nrog rau kev xav tau ntau ntxiv rau kev hloov khoom siv hluav taws xob hauv ntau qhov kev lag luam, nws yog ib qho tseem ceeb rau kev ntsuas thiab txheeb xyuas lub zog poob ntawm cov tiam tom ntej ntawm kev hloov hluav taws xob. Hauv daim ntawv thov no, TDS5000 lossis TDS7000 series digital fluorescence oscilloscopes, ua ke nrog TDSPWR2 lub zog ntsuas software, tuaj yeem pab koj yooj yim ua tiav cov kev ntsuas thiab kev tshuaj xyuas.
Tus tshiab SMPS (Hloov Hom PowerSupply) architecture yuav tsum muaj tam sim no thiab tsis tshua muaj hluav taws xob rau cov txheej txheem nrog cov ntaub ntawv siab ceev thiab qib GHz, uas ntxiv qhov tsis txaus ntseeg tshiab rau cov khoom siv hluav taws xob tsim los ntawm kev ua tau zoo, lub zog ntom ntom, kev ntseeg siab, thiab tus nqi. Txhawm rau txiav txim siab cov cai no hauv kev tsim, cov neeg tsim qauv tau txais cov qauv tshiab xws li synchronous rectification thev naus laus zis, kev kho lub zog lim dej, thiab nce kev hloov pauv ntau zaus. Cov thev naus laus zis no tseem coj tau qee qhov kev sib tw siab dua, xws li poob hluav taws xob siab, thermal dissipation, thiab ntau dhau EMI / EMC ntawm kev hloov khoom siv.
Thaum lub sij hawm hloov ntawm "tawm" (conduction) mus rau "on" (tawm) lub xeev, lub hwj chim mov unit yuav muaj kev poob siab zog. Lub zog poob ntawm kev hloov khoom siv hauv lub xeev "on" lossis "tawm" yog qhov me me vim tias tam sim no dhau los ntawm lub cuab yeej lossis qhov hluav taws xob ntawm lub cuab yeej tsawg heev. Inductors thiab transformers tuaj yeem cais tawm qhov hluav taws xob tso zis thiab ua kom lub nra hnyav tam sim no. Inductors thiab transformers kuj raug cuam tshuam rau kev cuam tshuam ntawm kev hloov zaus, ua rau lub zog tawg thiab qee zaus cuam tshuam los ntawm saturation.
Vim lub zog dissipated nyob rau hauv lub switching fais fab mov ntaus ntawv, tag nrho efficiency ntawm thermal nyhuv ntawm lub hwj chim mov yog txiav txim. Yog li ntawd, kev ntsuas lub zog poob ntawm kev hloov khoom siv thiab inductor / transformer yog ib qho tseem ceeb heev rau kev ntsuas kev ua haujlwm. Qhov ntsuas no tuaj yeem ntsuas lub zog ua haujlwm thiab thermal dissipation.
Nrog rau kev xav tau ntau ntxiv rau kev hloov khoom siv hluav taws xob hauv ntau qhov kev lag luam, nws yog ib qho tseem ceeb rau kev ntsuas thiab txheeb xyuas lub zog poob ntawm cov tiam tom ntej ntawm kev hloov hluav taws xob. Hauv daim ntawv thov no, TDS5000 lossis TDS7000 series digital fluorescence oscilloscopes, ua ke nrog TDSPWR2 lub zog ntsuas software, tuaj yeem pab koj yooj yim ua tiav cov kev ntsuas thiab kev tshuaj xyuas.
Tus tshiab SMPS (Hloov Hom PowerSupply) architecture yuav tsum muaj tam sim no thiab tsis tshua muaj hluav taws xob rau cov txheej txheem nrog cov ntaub ntawv siab ceev thiab qib GHz, uas ntxiv qhov tsis txaus ntseeg tshiab rau cov khoom siv hluav taws xob tsim los ntawm kev ua tau zoo, lub zog ntom ntom, kev ntseeg siab, thiab tus nqi. Txhawm rau txiav txim siab cov cai no hauv kev tsim, cov neeg tsim qauv tau txais cov qauv tshiab xws li synchronous rectification thev naus laus zis, kev kho lub zog lim dej, thiab nce kev hloov pauv ntau zaus. Cov thev naus laus zis no tseem coj tau qee qhov kev sib tw siab dua, xws li poob hluav taws xob siab, thermal dissipation, thiab ntau dhau EMI / EMC ntawm kev hloov khoom siv.
Thaum lub sij hawm hloov ntawm "tawm" (conduction) mus rau "on" (tawm) lub xeev, lub hwj chim mov unit yuav muaj kev poob siab zog. Lub zog poob ntawm kev hloov khoom siv hauv lub xeev "on" lossis "tawm" yog qhov me me vim tias tam sim no dhau los ntawm lub cuab yeej lossis qhov hluav taws xob ntawm lub cuab yeej tsawg heev. Inductors thiab transformers tuaj yeem cais tawm qhov hluav taws xob tso zis thiab ua kom lub nra hnyav tam sim no. Inductors thiab transformers kuj raug cuam tshuam rau kev cuam tshuam ntawm kev hloov zaus, ua rau lub zog tawg thiab qee zaus cuam tshuam los ntawm saturation.
Vim lub zog dissipated nyob rau hauv lub switching fais fab mov ntaus ntawv, tag nrho efficiency ntawm thermal nyhuv ntawm lub hwj chim mov yog txiav txim. Yog li ntawd, kev ntsuas lub zog poob ntawm kev hloov khoom siv thiab inductor / transformer yog ib qho tseem ceeb heev rau kev ntsuas kev ua haujlwm. Qhov ntsuas no tuaj yeem ntsuas lub zog ua haujlwm thiab thermal dissipation.
Xam lub zog poob ntawm electromagnetic Cheebtsam
Lwm txoj kev uas yuav txo tau lub zog poob yog cuam tshuam nrog cov hlau nplaum. Los ntawm cov qauv AC / DC thiab DC / DC circuit diagrams, inductors thiab transformers yog lwm yam khoom uas dissipate lub zog, yog li tsis tsuas yog cuam tshuam rau lub zog efficiency, tab sis kuj ua rau thermal dissipation.
Kev ntsuam xyuas ntawm inductors feem ntau siv LCR. LCR siv lub sine yoj ua lub teeb liab kuaj. Nyob rau hauv ib tug switching fais fab mov ntaus ntawv, lub inductor yuav loaded nrog high-voltage thiab siab tam sim no switching signals, tab sis tsis muaj ib tug ntawm lawv yog sinusoidal signals. Yog li ntawd, cov neeg tsim khoom siv hluav taws xob yuav tsum tau saib xyuas tus cwj pwm coj tus cwj pwm ntawm inductors lossis transformers nyob rau hauv cov khoom siv hluav taws xob tiag tiag. Yog li, kev sim siv LCR yuav tsis cuam tshuam qhov xwm txheej tiag tiag.
Txoj hauv kev zoo rau kev soj ntsuam cov yam ntxwv ntawm cov hlau nplaum sib nqus yog los ntawm BH nkhaus, raws li BH nkhaus tuaj yeem nthuav tawm cov yam ntxwv ntawm inductors hauv cov khoom siv hluav taws xob. TDSPWR2 tso cai rau koj sai sai ua BH tsom xam siv lub chaw kuaj oscilloscope yam tsis tas yuav muaj cov cuab yeej tshwj xeeb kim.
Thaum lub sijhawm hloov pauv thiab nyob ruaj khov ntawm cov khoom siv hluav taws xob, inductors thiab transformers muaj cov cwj pwm txawv. Yav dhau los, txhawm rau saib thiab txheeb xyuas BH cov yam ntxwv, cov neeg tsim qauv yuav tsum xub ntes lub teeb liab thiab tom qab ntawd ua kev tshuaj xyuas ntxiv ntawm tus kheej PC. Tam sim no, koj tuaj yeem ua BH tsom xam ncaj qha rau ntawm oscilloscope los ntawm TDSPWR2 los soj ntsuam tus cwj pwm ntawm tus inductor hauv lub sijhawm tiag tiag.Thaum ua qhov kev soj ntsuam tob, TDSPWR2 tuaj yeem muab tus cursor txuas ntawm BH cov phiaj xwm thiab ntes cov ntaub ntawv ntawm oscilloscope.
