Txoj kev ntsuas kev hloov pauv hluav taws xob nrog Digital Oscilloscope
Los ntawm cov khoom siv hluav taws xob analog ib txwm siv rau cov khoom siv hluav taws xob hloov pauv tau zoo, hom thiab qhov ntau thiab tsawg ntawm cov khoom siv hluav taws xob sib txawv heev. Lawv txhua tus ntsib qhov chaw ua haujlwm nyuaj thiab muaj zog. Cov khoom siv thauj khoom thiab kev thov tuaj yeem hloov pauv tseem ceeb hauv ib qho tam sim. Txawm tias "txhua hnub" hloov hluav taws xob yuav tsum muaj peev xwm tiv taus qhov siab tshaj plaws uas nyob deb tshaj nws qhov nruab nrab ua haujlwm. Cov kws tsim qauv tsim cov khoom siv hluav taws xob lossis cov tshuab siv hluav taws xob yuav tsum nkag siab txog kev ua haujlwm ntawm cov khoom siv hluav taws xob nyob rau hauv cov xwm txheej zoo li qub thiab tsis zoo.
Yav dhau los, piav qhia txog tus cwj pwm coj cwj pwm ntawm cov khoom siv hluav taws xob txhais tau tias siv lub tshuab hluav taws xob digital los ntsuas qhov tam sim no thiab qhov hluav taws xob zoo li qub, thiab ua qhov nyuaj rau suav nrog siv lub laij lej lossis PC. Niaj hnub no, feem ntau engineers tig mus rau oscilloscopes raws li lawv nyiam lub zog ntsuas platform. Niaj hnub nimno oscilloscopes tuaj yeem nruab nrog kev ntsuas hluav taws xob sib xyaw thiab kev tshuaj ntsuam xyuas software, ua kom yooj yim teeb tsa thiab ua kom ntsuas qhov ntsuas tau yooj yim dua. Cov neeg siv tuaj yeem hloov kho qhov tseem ceeb, suav nrog, thiab pom cov txiaj ntsig hauv vib nas this, tsis yog cov ntaub ntawv nyoos xwb.
Cov teeb meem tsim khoom siv hluav taws xob thiab ntsuas qhov xav tau
Qhov zoo tshaj plaws, txhua lub zog hluav taws xob yuav tsum ua haujlwm zoo li tus qauv lej tsim rau nws. Tab sis nyob rau hauv lub ntiaj teb tiag tiag, cov khoom muaj qhov tsis zoo, cov khoom thauj tuaj yeem hloov pauv, cov khoom siv hluav taws xob tuaj yeem cuam tshuam, thiab kev hloov ib puag ncig tuaj yeem hloov pauv kev ua haujlwm. Ntxiv mus, tas li hloov kev ua tau zoo thiab cov nqi xav tau kuj ua rau lub zog tsim hluav taws xob ntau dua. Xav txog cov teeb meem no:
Muaj pes tsawg watts ntawm lub hwj chim tuaj yeem tswj tau tshaj nws lub zog? Nws yuav kav ntev npaum li cas? Lub zog hluav taws xob tawm hluav taws xob ntau npaum li cas? Yuav ua li cas thaum nws overheats? Nws xav tau cua txias npaum li cas? Yuav ua li cas thaum lub load tam sim no nce ho? Cov cuab yeej puas tuaj yeem tswj hwm nws qhov ntsuas qhov ntsuas hluav taws xob? Lub hwj chim mov teb li cas rau ib qho luv luv Circuit Court ntawm cov zis kawg? Yuav ua li cas thaum lub input voltage ntawm lub hwj chim mov hloov?
Cov neeg tsim qauv yuav tsum tsim cov khoom siv hluav taws xob uas siv qhov chaw tsawg dua, txo cov cua sov, txo cov nqi tsim khoom, thiab ua tau raws li EMI / EMC cov qauv nruj dua. Tsuas yog kev ntsuas nruj nruj tuaj yeem ua rau cov kws ua haujlwm ua tiav cov hom phiaj no.
Oscilloscope thiab kev ntsuas hluav taws xob
Rau cov neeg siv lub oscilloscope rau high-bandwidth ntsuas, lub zog ntsuas yuav yooj yim vim nws qhov zaus kuj tsawg. Qhov tseeb, kuj tseem muaj ntau qhov kev sib tw uas cov neeg tsim hluav taws xob high-speed circuit tsis tau ntsib hauv kev ntsuas hluav taws xob.
Qhov voltage ntawm tag nrho cov switchgear yuav siab thiab ntab, txhais tau tias nws tsis yog av. Cov mem tes dav, lub sij hawm, zaus, thiab lub voj voog ua haujlwm ntawm lub teeb liab yuav sib txawv. Nws yog ib qho tsim nyog yuav tsum tau ntes thiab txheeb xyuas lub waveform kom tseeb thiab kuaj xyuas txhua qhov txawv txav hauv lub waveform. Cov kev cai rau oscilloscopes yog xav tau. Ntau qhov kev sojntsuam - ib txhij xav tau ib qho kev sojntsuam xaus, kev sojntsuam sib txawv, thiab kev sojntsuam tam sim no. Cov cuab yeej yuav tsum muaj lub cim xeeb loj los muab qhov chaw kaw cia rau cov txiaj ntsig tau ntev-ntev tsawg zaus. Thiab nws yuav xav tau kev ntes cov cim sib txawv nrog qhov sib txawv loj ntawm qhov sib txawv hauv ib qho kev tau txais.
Lub hauv paus ntawm Switching Power Supply
Lub mainstream DC fais fab mov architecture nyob rau hauv feem ntau niaj hnub systems yog ib tug switching fais fab mov (SMPS), uas yog paub zoo tias nws muaj peev xwm los daws tau cov kev hloov loads. Cov hluav taws xob teeb liab txoj kev ntawm ib qho kev hloov pauv hluav taws xob muaj xws li cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov khoom sib nqus. Hloov cov khoom siv hluav taws xob yuav tsum txo qis kev siv cov khoom poob xws li cov resistors thiab linear transistors, thiab feem ntau yog siv cov khoom tsis zoo xws li hloov cov transistors, capacitors, thiab cov khoom sib nqus.
Lub tshuab hluav taws xob hloov hluav taws xob kuj tseem muaj qhov tswj hwm, uas suav nrog cov khoom siv xws li pulse width modulation regulator, pulse zaus modulation regulator, thiab tawm tswv yim voj 1. Cov seem tswj yuav muaj nws lub hwj chim mov. Daim duab 1 yog daim duab qhia yooj yim ntawm cov khoom siv hluav taws xob hloov pauv, uas qhia txog lub zog hloov pauv, suav nrog cov khoom siv nquag, cov khoom siv tsis zoo, thiab cov khoom sib nqus.
Kev siv hluav taws xob hloov hluav taws xob siv hluav taws xob semiconductor hloov khoom siv xws li hlau oxide field-effect transistors (MOSFETs) thiab insulated gate bipolar transistors (IGBTs). Cov khoom siv no muaj lub sijhawm hloov pauv luv luv thiab tuaj yeem tiv taus qhov hluav taws xob tsis ruaj khov. Qhov tseem ceeb sib npaug, lawv siv lub zog me me hauv ob qho tib si qhib thiab kaw, nrog kev ua haujlwm siab thiab tsim hluav taws xob tsawg. Hloov cov khoom siv feem ntau txiav txim siab tag nrho kev ua haujlwm ntawm kev hloov cov khoom siv hluav taws xob. Cov kev ntsuas tseem ceeb ntawm cov khoom siv hloov pauv muaj xws li: hloov pauv, qhov nruab nrab lub zog poob, thaj chaw ua haujlwm nyab xeeb, thiab lwm yam.
