Voltage Regulator Maintenance kauj ruam
1, Thaum kho cov khoom siv hluav taws xob hloov pauv, ua ntej siv lub tshuab hluav taws xob los xyuas seb cov khoom siv hluav taws xob puas yog luv luv.
Hloov cov khoom siv hluav taws xob
Xws li lub hwj chim rectifier choj pawg, hloov cov raj, lub zog hluav taws xob ntau zaus; inhibit inrush tam sim no ntawm high-power resistors raug hlawv. Tom qab ntawd kuaj cov zis voltage qhov chaw nres nkoj tsis zoo, cov khoom saum toj no yuav tsum tau hloov yog tias puas lawm.
2, tom qab ua tiav ntawm thawj kauj ruam, lub hwj huam mov tsis tuaj yeem ua haujlwm zoo, tom qab ntawd txhawm rau txheeb xyuas lub zog ntawm cov khoom siv hluav taws xob (PFC) thiab cov khoom siv hluav taws xob dav dav (PWM), sab laj cov ntaub ntawv cuam tshuam, paub txog PFC thiab PWM module, kev ua haujlwm ntawm txhua tus ko taw thiab nws cov modules ua haujlwm zoo tsim nyog.
3, ces, rau lub hwj chim mov nrog PFC Circuit Court yuav tsum tau ntsuas lub lim capacitor voltage yog hais txog 380VDC, xws li txog 380VDC voltage, qhia tias PFC module ua haujlwm zoo, thiab tom qab ntawd kuaj cov PWM cov khoom. ntawm lub xeev ua hauj lwm, ntsuas nws lub hwj chim input VC, siv voltage tso zis VR, pib tswj Vstart / Vcontrol davhlau ya nyob twg voltage yog ib txwm, siv 220VAC / 220VAC / 220VAC / 220VAC Cheebtsam (PWM). 220VAC / 220VAC kev rho tawm hloov pauv mus rau qhov hloov hluav taws xob, siv lub oscilloscope los soj ntsuam PWM module CT davhlau ya nyob twg rau hauv av waveform yog ib qho zoo linear sawtooth yoj los yog daim duab peb sab, xws li TL494 CT davhlau ya nyob twg rau sawtooth yoj, FA5310 CT kawg ntawm lub daim duab peb sab yoj. Seb lub waveform ntawm cov zis V0 yog lub teeb liab mem tes nqaim.
Regulated fais fab mov tswj cov kauj ruam
4, nyob rau hauv lub switching fais fab mov kev xyaum, muaj ntau yam switching fais fab mov siv UC38 × × series 8-pin PWM Cheebtsam, lub
Switching Power Supply Adapter
Feem ntau cov khoom siv hluav taws xob tsis ua haujlwm vim tias lub zog hluav taws xob pib qhov hluav taws xob puas lawm, lossis kev ua haujlwm ntawm cov nti. Thaum R tau tawg yam tsis muaj VC, PWM tivthaiv tsis tuaj yeem ua haujlwm, koj yuav tsum tau hloov lub resistor nrog tus nqi zoo ib yam li thawj lub zog tiv thaiv. Thaum PWM tivthaiv pib tam sim no nce, tus nqi R tuaj yeem txo kom txog thaum PWM tivthaiv tuaj yeem ua haujlwm ib txwm. Hauv kev kho ntawm GE DR fais fab mov, PWM module rau UC3843, kev sim tsis pom muaj lwm yam txawv txav hauv R (220K) ntawm kev sib txuas ntawm 220K resistor, PWM Cheebtsam ua haujlwm, cov zis voltage yog qhov qub. Qee lub sij hawm vim qhov tsis ua haujlwm ntawm qhov hluav taws xob peripheral, ua rau VR davhlau ya nyob twg 5V voltage ntawm 0V, PWM Cheebtsam tsis ua haujlwm, hauv kev kho ntawm Kodak 8900 lub koob yees duab fais fab mov, ntsib qhov teeb meem no, txuas nrog VR sab ntawm sab nraud Circuit Court kom disconnect tus. VR los ntawm 0V txog 5V, PWM Cheebtsam ua haujlwm ib txwm, cov zis hluav taws xob yog qhov qub.
5, thaum lub lim capacitor ntawm qhov hluav taws xob ntawm 380VDC lossis yog li ntawd, qhia tias PFC Circuit Court tsis ua haujlwm zoo.
