Cov tswv yim ua kom pom qhov tsis raug hauv kev hloov cov khoom siv hluav taws xob
Ua ntej, saib seb lub hwj chim fuse puas puas lawm. Yog tias lub fuse puas lawm, nws tsis tuaj yeem hloov tau sai. Nws yog ib qho tsim nyog yuav tsum tau kuaj xyuas thawj zaug seb puas muaj ib qho luv luv hauv lub hwj chim mov. Txoj kev: Siv qhov kev tiv thaiv ntau yam ntawm ib qho multimeter los kuaj AC davhlau ya nyob twg tom qab lub zog fuse (kuaj taw tes ib). Qhov kev tiv thaiv ib txwm yuav tsum yog ob peb kaum ntawm kiloohms lossis ntau dua. Yog tias qhov tsis kam yog xoom, nws qhia tau hais tias muaj AC luv Circuit Court nyob rau hauv lub hwj chim mov. Tsis tas li ntawd, peb yuav tsum tsom mus xyuas seb lub AC filtering capacitor ntawm lub hwj huam mov puas puas lawm; Yog tias muaj varistor, nws yuav tsum tau kuaj xyuas.
Yog hais tias qhov kev ntsuam xyuas saum toj no yog qhov qub, peb yuav tsum mus kuaj plaub lub diodes ntawm lub hwj chim mov (kuaj taw tes thib ob). Nyob rau hauv cov xwm txheej ib txwm muaj, qhov kev tiv thaiv pem hauv ntej ntawm lub diode yog ob peb k (kuaj nrog ib qho multimeter hauv 1k hom), thiab qhov rov qab tsis kam yog ze rau infinity. Yog tias kuaj pom qhov txawv txav, yuav tsum tau hloov pauv. Tom qab kev tshawb nrhiav, cov kauj ruam tom ntej yog sim DC tsis kam ntawm lub zog hluav taws xob (kuaj taw tes peb). Nws qhov kev tiv thaiv ib txwm kuj tseem nyob hauv thaj tsam ntawm k. Yog tias qhov tsis kam yog xoom, nws qhia tias muaj DC luv Circuit Court. Muaj ntau qhov laj thawj uas tuaj yeem ua rau DC luv Circuit Court, xws li luv luv - Circuit Court puas rau lim capacitors, kev puas tsuaj rau lub hwj chim oscillation raj, thiab kev puas tsuaj rau oscillation integrated blocks thiab peripheral circuit, tag nrho cov uas yuav ua rau luv luv Circuit Court. Nws yuav tsum tau muab sau tseg tias ua ntej yuav hloov lub hwj chim oscillation raj, nws yog tsim nyog los xyuas kom meej tias lub oscillation integrated thaiv thiab peripheral circuits yog ib txwm, txwv tsis pub nws yuav ua rau muaj kev puas tsuaj ntxiv rau lub hwj chim raj.
Tom qab tshem tawm cov saum toj no -hais txog teeb meem nrog lub hwj huam hloov pauv, nws qhia tau hais tias feem ntau ntawm cov txhaum muaj nyob rau hauv lub oscillation tswj
Circuit Court, sampling tawm tswv yim circuit, los yog load. Nyob rau ntawm no, peb yuav tsum xub xyuas seb lub hwj huam mov Circuit Court ntawm oscillation integrated thaiv yog qhov qub (kuaj taw tes plaub), thiab nws cov voltage ib txwm yuav tsum nyob ib ncig ntawm 10V (tseem ceeb ceeb toom: raws li qhov ntsuas hluav taws xob yuav tsum tau nqa tawm nyob rau hauv lub hwj chim, thiab muaj high voltage mains ntawm lub hwj chim board, tshwj xeeb yuav tsum tau them rau tus kheej kev nyab xeeb, thiab tsis txhob sim yuav tsum tau ua kom ncaj qha mus kov ib feem ntawm lub hwj chim mov).
Yog tias tsis muaj qhov hluav taws xob lossis qhov hluav taws xob tsawg heev ntawm qhov no, thawj qhov yuav tsum tau xyuas yog seb qhov hluav taws xob txo qhov hluav taws xob puas puas lawm; Tom ntej no, xyuas seb lub oscillation integrated block thiab nws cov khoom siv hluav taws xob sab nraud yog qhov qub. Yog tias tsis muaj qhov yuam kev nyob rau hauv peripheral circuit, nws raug nquahu kom hloov cov oscillation integrated block. Tau kawg, qee zaum cov khoom siv hluav taws xob tsis tuaj yeem tso tawm qhov hluav taws xob ib txwm, uas kuj tuaj yeem tshwm sim los ntawm kev thauj khoom luv luv thiab kev tiv thaiv hluav taws xob. Rau cov khoom siv hluav taws xob no, peb tsuas yog yuav tsum tau tshem tawm cov kab hluav taws xob thiab xyuas seb qhov tso zis hluav taws xob yog qhov qub (kuaj taw tes tsib) txhawm rau txiav txim siab qhov chaw txhaum. Tom qab qhov kev daws teeb meem dhau los, cov lus tawm tswv yim yuav tsum tau kuaj xyuas. Feem ntau hais lus, qhov ua txhaum ntawm qhov no feem ntau yog tsom rau hauv optocoupler thiab nws cov amplification Circuit Court, thiab yuav tsum tau them nyiaj tshwj xeeb.
