Kev Tshawb Nrhiav Kev Ua Phem Feem Ntau thiab daws teeb meem ntawm DC Stabilized Power Supply
Luv luv ua hauj lwm hauv paus ntsiab lus ntawm DC tswj fais fab mov
DC tswj fais fab mov muab faib raws li lub hauv paus ntsiab lus ntawm kev tswj hluav taws xob, thiab feem ntau suav nrog ob pawg: series tswj fais fab mov thiab hloov hluav taws xob tswj hluav taws xob. Ob hom DC tswj cov khoom siv hluav taws xob muaj lawv tus kheej qhov zoo thiab qhov tsis zoo: cov khoom siv hluav taws xob tswj hluav taws xob yog qhov yooj yim, ripple me me, tab sis qhov ua tau zoo yog tsawg. Kev hloov hluav taws xob tswj hluav taws xob muaj kev ua haujlwm siab thiab me me, tab sis lub voj voog yog qhov nyuaj thiab muaj kev cuam tshuam zoo rau cov tshuab hluav taws xob ib puag ncig. Tam sim no, daim ntawv thov ntawm kev hloov hluav taws xob tswj hluav taws xob yog ntau thiab ntau dua.
1 Lub hauv paus ntsiab lus ntawm series DC tswj fais fab mov
Cov ntaub ntawv Circuit Court ntawm series DC tswj fais fab mov muaj ntau yam, tab sis lawv txhua tus muaj qhov zoo sib xws hauv cov ntsiab lus. Composition block daim duab ntawm ib tug general series DC tswj fais fab mov
Feem ntau, cov zis voltage ntawm DC stabilized fais fab mov yog tsawg, thiab AC input voltage feem ntau yog hais txog 220 V ntawm lub mains. Yog li ntawd, lub hwj chim zaus transformer nrog lub hwj chim uas ua tau raws li qhov yuav tsum tau ua yog thawj zaug yuav tsum tau txo qis 220 V voltage mus rau theem tsim nyog, thiab tom qab ntawd Cov choj hluav taws xob tsim los ntawm tus choj rectifier lossis rectifier diode yog siv rau kev kho, tom qab ntawd lim los ntawm ib qho kev sib txuas ntawm lub tshuab hluav taws xob. capacitor, thiab thaum kawg stabilized los ntawm kev sib xyaw voltage stabilizer lossis series voltage regulator Circuit Court muaj li ntawm transistors thiab lwm yam circuits kom tau txais qhov yuav tsum tau DC tso zis voltage.
Fault Analysis and Troubleshooting Methods of DC Stabilized Power Supply
1) Fault 1: Tsis muaj qhov tso zis hluav taws xob, uas yog, cov zis hluav taws xob yog 0 V
Cov zis hluav taws xob ntawm lub Circuit Court yog xoom, uas txhais tau hais tias lub Circuit Court tsis muaj cov zis. Nws tuaj yeem pom tau yooj yim los ntawm kev txheeb xyuas ntawm qhov kawg ntawm cov khoom siv hluav taws xob mus rau qhov tso zis kawg tias yog tias ib qho ntawm cov xwm txheej hauv qab no tshwm sim hauv Circuit Court, Circuit Court yuav tsis muaj qhov hluav taws xob tawm.
① Cov hlua hluav taws xob thiab cov xaim hluav taws xob tsis raug lossis tsis zoo txuas,
② Lub fuse yog tshuab los yog qhib Circuit Court,
③transformer qhib Circuit Court, ④bridge rectifier Circuit Court qhib Circuit Court,
⑤ capacitor luv luv Circuit Court,
⑥ resistor qhib Circuit Court, ⑦ transistor qhib Circuit Court,
⑧ Lub qhov hluav taws xob tswj lub raj qhib.
Yuav txiav txim qhov twg
Ib qho ua rau? Nws tuaj yeem kuaj tau raws li cov kauj ruam hauv qab no. Yog tias pom qhov txhaum, nws tuaj yeem kho tau. Yog tias qhov txhaum raug tshem tawm, nws tsis tas yuav mus rau kauj ruam tom ntej:
Kauj Ruam 1: Txheeb xyuas seb cov plugs thiab qhov cuam tshuam ntawm cov hlua hluav taws xob thiab cov xaim hluav taws xob puas xoob, xyuas seb cov hlau lub cev puas raug puas tsuaj, siv lub tshuab hluav taws xob los ntsuas seb qhov hluav taws xob ntawm qhov cuam tshuam puas zoo ib yam nrog qhov hluav taws xob ntawm lub qhov (socket), thiab ntsuas lawv. txuas ntxiv. Yog tias muaj teeb meem, koj tuaj yeem kho ncaj qha thiab hloov cov xaim manually.
Kauj Ruam 2: Tshem tawm lub fuse kom pom tias nws puas tau tawg, lossis muaj qhov tshwm sim ntawm kev sib cuag tsis zoo. Yog hais tias lub fuse raug tshuab, tsuas yog hloov lub fuse nrog cov tsis sib xws.
Kauj Ruam 3: Qhib lub hau ntawm lub tshuab thiab saib seb puas muaj cov khoom hlawv tawm, cov xov hlau raug txiav, thiab seb lub rooj tsav xwm Circuit Court yog qhib los yog txiav tawm. Yog tias tsis muaj qhov tsis pom kev, siv lub multimeter los ntsuas qhov txuas ntxiv ntawm cov chav nyob thiab pom tias tom qab qhov tsis ua haujlwm, hloov cov khoom siv los yog rov vuam lossis rov xaim qhov qhib Circuit Court.
2) Qhov txhaum 2: Cov zis hluav taws xob tsis raug, uas yog, qhov hluav taws xob siab dua lossis qis dua qhov qub voltage, thiab nws tsis kho
Thaum cov zis hluav taws xob tsis ua raws sijhawm, peb tuaj yeem siv multimeter lossis oscilloscope los ntsuas qhov ua tau zoo ntawm txhua chav tsev. Yog tias pom muaj teeb meem, peb tuaj yeem kuaj xyuas seb cov khoom siv ywj pheej hauv chav tsev puas raug them los yog tsis. Feem ntau faults muaj cov hauv qab no yog vim li cas.
