Kev saib xyuas tsis raug piv txwv ntawm kev tswj fais fab mov
(1) Muaj kev tswj hwm qhov hluav taws xob thiab tsis muaj kev tswj xyuas hluav taws xob
Ua ntej siv DC tswj fais fab mov, feem ntau yuav tsum tau ua kom sov lub hwj chim, thiab tom qab ntawd kho lub potentiometer ntawm qhov tso zis kawg los txiav txim seb qhov kev hloov kho qhov hluav taws xob puas yog qhov qub thiab seb qhov kev hloov kho qhov hluav taws xob puas pom tseeb. Tom qab paub meej tias tsis muaj qhov txawv txav, kho qhov tso zis kawg voltage kom tsim nyog tus nqi, thiab thaum kawg txuas lub load. Yog tias qhov hluav taws xob ntawm qhov hluav taws xob tso tawm ntawm DC stabilized fais fab mov yog qhov qub thaum nws tsis muaj kev thauj khoom, tab sis qhov hluav taws xob ntawm qhov hluav taws xob qhov hluav taws xob poob qis tom qab kev sib txuas, nws txhais tau hais tias qhov hluav taws xob ruaj khov hluav taws xob tsis raug, uas yog, voltage stabilizing fais fab mov muaj voltage tswj tab sis tsis muaj voltage tswj.
Nyob rau hauv qhov kev pom ntawm qhov teeb meem no, siv ib tug multimeter los ntsuas lub on-off mob ntawm lub regulator raj collector thiab emitter nyob rau hauv lub voltage regulator Circuit Court. Yog tias tsis muaj qhov txawv txav, koj tuaj yeem tshawb xyuas seb lub diode hauv lub rectifier Circuit Court puas puas lawm. Vim hais tias yog ib tug diode puas lawm, tag nrho-yoj rectification yuav dhau los ua ib nrab-yoj rectification. Thaum tsis muaj kev thauj khoom, yog tias lub peev xwm ntawm lub lim capacitor loj txaus, nws tseem tuaj yeem muab cov zis hluav taws xob txaus los xyuas kom muaj kev tswj hwm qhov qub; cov nyhuv siab.
(2) Cov zis hluav taws xob yog siab dhau, tsis muaj kev tswj hwm hluav taws xob, tsis muaj hluav taws xob ruaj khov
Thaum DC stabilized fais fab mov tsis muaj load, yog hais tias qhov tso zis davhlau ya nyob twg voltage tshaj qhov siab tshaj plaws tus nqi ntawm adjustable tso zis voltage thiab tsis tuaj yeem kho ntawm nws tus kheej, muaj ob qho laj thawj rau qhov tsis ua haujlwm:
① Nyob rau hauv lub raj sib xyaw ua ke ntawm VT1 thiab VT2, muaj qhov sib tsoo thiab luv luv ntawm cov khoom siv thiab cov emitter ntawm lub transistor. Lub sijhawm no, DC qhov hluav taws xob tau txais los ntawm lub tshuab hluav taws xob rectifier ncaj qha ntxiv rau cov zis ntawm DC stabilized fais fab mov los ntawm luv luv-circuited transistor. Terminal, regulator muaj nuj nqi thiab
Lub zog stabilization muaj nuj nqi yuav ua tsis tiav.
② Lub collector los yog emitter ntawm lub amplifying raj nyob rau hauv lub sampling piv Circuit Court yog disconnected, thiab lub composite adjusting raj yog raug mus rau qhov rov qab voltage ntawm lub auxiliary fais fab mov nyob rau lub sij hawm no, thiab lub hauv paus tam sim no nce sharply, uas ua rau cov tsis kam ntawm lub emitter thiab lub collector ntawm lub adjusting raj txo sharply. Me me, kwv yees li tuaj yeem pom raws li qhov hloov kho DC voltage ncaj qha ntxiv rau qhov tso zis ntawm cov khoom siv hluav taws xob tswj.
(3) Cov zis hluav taws xob ntawm txhua lub iav yog qhov tsawg heev thiab tsis muaj kev tswj hwm qhov hluav taws xob. Muaj peb yam ua tau rau qhov ua tsis tiav no:
① Lub rectifier Circuit Court yog faulty, thiab lub rectifier diode puas lawm, ua rau tsis muaj rectified voltage raug xa mus rau lub voltage stabilizing circuit.
② Cov khoom siv hluav taws xob pabcuam hauv qhov sib piv amplifier Circuit Court puas lawm, thiab tsis muaj qhov siv hluav taws xob, yog li kev hloov pauv tsis tuaj yeem ua tiav.
③ Kev thim rov qab thiab luv luv ntawm cov khoom siv thiab cov emitter ntawm cov qauv amplifier raj ua rau lub raj hloov kho tsis ua haujlwm li qub.
