Switching fais fab mov tu teeb meem
Ua ntej tshaj plaws, saib seb lub hwj chim fuse puas puas. Yog tias lub fuse puas lawm, nws tsis tuaj yeem hloov sai sai. Nws yog ib qho tsim nyog los xyuas seb puas muaj ib qho luv luv hauv lub hwj chim mov. Txoj kev: Siv cov hluav taws xob thaiv hluav taws xob ntawm lub tshuab hluav taws xob los ntsuas AC kawg (kuaj taw tes 1) tom qab lub hwj huam mov fuse. Qhov kev tiv thaiv ib txwm yuav tsum siab tshaj kaum kiloohms. Yog tias qhov tsis kam yog xoom, nws txhais tau hais tias muaj AC luv Circuit Court nyob rau hauv lub hwj chim mov. Tsis tas li ntawd, peb yuav tsum tau tsom mus xyuas seb lub AC lim capacitor ntawm lub hwj huam mov puas puas lawm; Nyob rau tib lub sijhawm, yog tias muaj varistor, qhov kev tiv thaiv no kuj yuav tsum tau kuaj xyuas.
Yog hais tias qhov kev ntsuam xyuas saum toj no zoo li qub, peb yuav tsum sim plaub lub diodes rectifier ntawm lub hwj chim mov (kuaj taw tes 2). 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 multimeter × 1k block), thiab rov qab tsis kam yog ze rau infinity. Yog tias qhov ntsuas tau pom tias txawv txav, nws yuav tsum tau hloov. Tom qab qhov kev tshawb nrhiav, qhov tom ntej no yuav tsum tau ua yog kuaj qhov DC tsis kam ntawm lub zog hluav taws xob (kuaj taw tes 3), thiab nws qhov kev tiv thaiv ib txwm kuj yog ob peb k. Yog tias qhov tsis kam yog xoom, nws txhais tau hais tias muaj DC luv Circuit Court. Muaj ntau yam laj thawj rau DC luv luv Circuit Court, xws li luv-circuit kev puas tsuaj rau lub lim capacitor, kev puas tsuaj rau lub hwj chim oscillating raj, kev puas tsuaj rau oscillating integrated block thiab peripheral circuits, uas yuav ua rau ib tug luv luv Circuit Court. Ntawm no, nws yuav tsum tau piav qhia tias ua ntej hloov lub hwj chim oscillating raj, nws yuav tsum tau paub tseeb tias lub oscillating integrated blocks thiab peripheral circuits yog ib txwm, txwv tsis pub lub hwj chim raj yuav puas dua.
Tom qab tshem tawm cov teeb meem saum toj no ntawm kev hloov hluav taws xob, nws qhia tau hais tias feem ntau ntawm cov kev ua txhaum muaj nyob rau hauv lub oscillation tswj Circuit Court, sampling tawm tswv yim circuit lossis load. Lub sij hawm no, peb yuav tsum xub xyuas seb lub hwj huam mov Circuit Court ntawm lub oscillating integrated thaiv yog qhov qub (kuaj taw tes 4), thiab nws cov voltage ib txwm yuav tsum nyob ib ncig ntawm 10V (ceeb toom tshwj xeeb: vim hais tias qhov ntsuas hluav taws xob yuav tsum tau nqa tawm raws li cov xwm txheej. fais fab tuag, thiab muaj qhov hluav taws xob siab ntawm lub rooj tsavxwm lub hwj chim, yog li ua tib zoo saib xyuas kev nyab xeeb ntawm tus kheej, tsis txhob sim kov ib feem ntawm lub hwj chim ncaj qha).
Yog tias tsis muaj qhov hluav taws xob ntawm qhov taw tes no lossis qhov hluav taws xob tsawg heev, ua ntej xyuas seb qhov kev poob qis puas puas lawm; thib ob, xyuas seb qhov 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 lub oscillation integrated block. Ntawm chav kawm, qee zaum cov khoom siv hluav taws xob tsis tuaj yeem tso tawm qhov hluav taws xob ib txwm muaj, uas kuj tuaj yeem tshwm sim los ntawm qhov luv luv ntawm cov khoom thauj thiab kev tiv thaiv ntawm lub zog hluav taws xob. Rau cov khoom siv hluav taws xob no, peb tsuas yog yuav tsum tau muab cov kab tso tawm thiab xyuas seb qhov tso zis hluav taws xob puas zoo li qub (kuaj taw tes 5) txhawm rau txiav txim siab qhov chaw txhaum. Tom qab qhov kev daws teeb meem dhau los, qhov kev tawm tswv yim Circuit Court yuav tsum tau kuaj xyuas thaum kawg. Feem ntau hais lus, qhov ua txhaum ntawm qhov no feem ntau yog tsom rau ntawm photocoupler thiab nws cov amplifying circuit, yog li yuav tsum tau them nyiaj tshwj xeeb.
