Txoj kev kho ntawm inverter hloov fais fab mov
1. Tshawb xyuas seb qhov kev hloov kho Circuit Court D1-D4 puas tau tawg los yog seb lub capacitors ntawm lub filtering Circuit Court puas puas lawm, seb qhov sib npaug ntawm cov resistors R1 thiab R2 zoo li qub, thiab seb qhov hluav taws xob txo qhov resistor R3 puas tau kub hnyiab los yog nce. tsis kam tus nqi thiab ua tsis tiav (kuaj nyob rau hauv lub hwj chim-tawm tej yam kev mob).
2. Txheeb xyuas seb puas muaj qhov tawg lossis luv luv hauv lub be thiab ce junctions ntawm lub raj hloov, thiab ntsuas seb puas muaj ib qho luv luv Circuit Court nyob rau hauv txhua qhov winding ntawm qhov hloov pauv hloov los txiav txim siab qhov zoo ntawm lub raj hloov pauv thiab hloov pauv hloov pauv (kuaj nyob rau hauv lub hwj chim-off tej yam kev mob).
3. Tshawb xyuas cov khoom siv kho kom raug thiab lim dej ntawm cov khoom tso tawm thib ob winding, nrog rau kev tsom mus rau seb lub lim dej capacitor puas bulging lossis puas, txhawm rau tshem tawm qhov muaj peev xwm ntawm qhov luv luv hauv Circuit Court thib ob.
4. Xyuas seb qhov nqus hluav taws xob D5, R11, thiab C9 puas zoo li qub (kuaj nyob rau hauv cov xwm txheej fais fab).
5. Tom qab paub tseeb tias cov khoom siv saum toj no yog qhov qub, peb tuaj yeem tshem tawm lub rooj tsav xwm hloov hluav taws xob los ntawm lub tshuab hloov zaus thiab ua qhov ntsuas hluav taws xob sib cais ntawm nws. Maj mam kho qhov ntsuas hluav taws xob ntawm lub zog hloov hluav taws xob nrog lub ntsuas hluav taws xob. Lub sijhawm no, koj yuav tsum tuaj yeem hnov lub suab nrov ntawm lub transformer thaum nws pib vibrate. Yog tias koj tsis hnov lub suab vibration, siv multimeter los xyuas seb puas muaj DC voltage ntawm 12V-16V ntawm qhov zoo thiab qhov tsis zoo ntawm UC3844 fais fab mov.
6. Tom qab paub meej tias qhov hluav taws xob ntawm lub zog hluav taws xob ntawm lub davhlau ya nyob twg ntawm UC3844 yog qhov qub, lub oscilloscope tuaj yeem siv los xyuas seb puas muaj PWM nthwv dej tawm los ntawm tus pin 6 ntawm UC3844 mus rau qhov chaw nres nkoj ntawm lub raj hloov (nyob ntawm qhov tsim hluav taws xob Circuit Court. , qhov zaus ntawm PWM yoj yog feem ntau ntawm 20KHZ-100KHZ).
7. Yog tias tsis muaj PWM nthwv dej tawm, hloov cov khoom siv sijhawm C5, R8, C6, lossis UC3844. Tom qab tshem tawm cov kauj ruam saum toj no, lub zog hloov hluav taws xob yuav tsum tuaj yeem ua haujlwm ib txwm. Hauv kev hloov pauv zaus, muaj ntau hom kev hloov hluav taws xob, tab sis cov ntsiab lus tseem ceeb yog tib yam. Piv txwv li, txhua PWM tswj nti muaj lub hwj huam mov davhlau ya nyob twg, lub sij hawm lub caij RC network, thiab cov chaw nres nkoj rau outputting PWM nthwv dej. Tsuav peb nkag siab txog lawv cov qauv kev ua haujlwm thiab ua raws li qee txoj hauv kev thiab cov kauj ruam, peb tuaj yeem tshem tawm qhov tsis raug
