Kev faib tawm ntawm DC Switching Power Supplies
txoj cai ua haujlwm
1. Cov tswv yim AC fais fab yog rectified thiab lim rau DC;
2. Tswj lub raj hloov los ntawm high-frequency pWM (mulse width modulation) teeb liab, thiab siv qhov DC mus rau thawj qhov hloov pauv hloov;
3. Qhov thib ob induction ntawm qhov hloov pauv hloov ua qhov hluav taws xob ntau zaus, uas yog muab rau cov khoom thauj los ntawm kev hloov kho thiab lim;
4. Cov khoom tso tawm yog pub rov qab rau hauv kev tswj xyuas Circuit Court los ntawm qee qhov Circuit Court los tswj lub voj voog pWM, txhawm rau ua tiav cov zis ruaj khov.
Thaum nkag mus rau AC lub zog, nws feem ntau dhau los ntawm qee yam zoo li lub voj voog tam sim no los lim tawm kev cuam tshuam ntawm daim phiaj hluav taws xob thiab tseem tuaj yeem lim tawm kev cuam tshuam los ntawm lub zog hluav taws xob ntawm daim phiaj hluav taws xob;
Thaum lub hwj chim zoo ib yam, qhov siab dua qhov hloov zaus, qhov me me ntawm qhov hloov pauv hloov pauv, tab sis qhov siab dua qhov yuav tsum tau ua rau qhov hloov pauv transistor;
Qhov thib ob ntawm kev hloov pauv hloov pauv tuaj yeem muaj ntau yam windings lossis ib qho winding nrog ntau cov kais dej kom tau txais cov khoom tsim nyog;
Feem ntau, qee qhov kev tiv thaiv Circuit Court yuav tsum tau ntxiv, xws li tsis muaj-load thiab luv luv Circuit Court tiv thaiv, txwv tsis pub nws yuav hlawv tawm lub switching fais fab mov.
Feem ntau siv hauv kev lag luam thiab qee yam khoom siv hauv tsev, xws li TV, khoos phis tawj, thiab lwm yam
Kev faib tawm ntawm DC Switching Power Supplies
Lub high-frequency switching DC fais fab mov [1] yog ua los ntawm high-zoo imported IGBT raws li lub ntsiab lub hwj chim ntaus ntawv, thiab transformer core yog tsim los ntawm ultra microcrystalline (tseem hu ua nanocrystalline) mos magnetic alloy khoom. Lub ntsiab tswj system txais ntau lub voj tswj tshuab, thiab cov qauv siv los tiv thaiv ntsev tsuag acidification ntsuas. Cov khoom siv hluav taws xob muaj cov qauv tsim nyog thiab muaj kev ntseeg tau zoo. Cov khoom siv fais fab no tau dhau los ua cov khoom lag luam tshiab ntawm thyristor fais fab mov vim nws qhov kev ua tau zoo ntawm qhov me me, lub teeb yuag, kev ua haujlwm siab, thiab kev ntseeg siab. Haum rau ntau qhov chaw kho qhov chaw xws li kev sim, oxidation, electrolysis, galvanizing, npib tsib xee plating, tin plating, chromium plating, optoelectronics, smelting, tsim, corrosion, thiab lwm yam. Nws kuj tau txais kev qhuas qhuas los ntawm cov neeg siv hauv thaj chaw xws li anodizing, Nqus txheej, electrolysis, electrophoresis, dej kho, hluav taws xob khoom laus, hluav taws xob cua sov, electrochemistry, thiab lwm yam. Tshwj xeeb tshaj yog nyob rau hauv lub teb ntawm pCB, electroplating, thiab electrolysis, nws tau dhau los ua cov khoom siv fais fab rau ntau tus neeg muas zaub.
Cov yam ntxwv ntawm kev siv
1. Txo porosity, thiab qhov tsim tus nqi ntawm cov siv lead ua nuclei yog ceev tshaj qhov kev loj hlob, txhawb cov refinement ntawm crystal nuclei.
2. Txhim kho lub zog sib txuas, ua rau cov zaj duab xis passivation tawg, yog qhov tsim nyog rau kev sib koom ua ke ntawm cov substrate thiab txheej txheej.
3. Txhim kho kev pab them nqi thiab dispersion muaj peev xwm, siab cathode tsis zoo muaj peev xwm tso cai rau cov cheeb tsam passive hauv cov khoom siv hluav taws xob zoo tib yam rau kev tso nyiaj, ua kom qeeb ntawm qhov tsis xws luag ntawm "burnt" thiab "dendritic" deposits tshwm sim los ntawm kev noj ntau dhau ntawm deposition ions nyob rau hauv protruding qhov chaw nrog complex duab. Txhawm rau kom tau txais cov txheej txheem tshwj xeeb (xws li xim, tsis muaj qhov pores, thiab lwm yam), lub thickness tuaj yeem raug txo mus rau 1/3-1/2 ntawm qhov qub, txuag cov ntaub ntawv raw.
4. Txo cov kev ntxhov siab sab hauv ntawm txheej txheej, txhim kho lattice defects, impurities, voids, qog, thiab lwm yam., yooj yim kom tau ib qho tawg dawb txheej, thiab txo cov additives.
5. Nws yog qhov muaj txiaj ntsig zoo kom tau txais cov txheej txheem alloy nrog ruaj khov.
6. Txhim kho qhov tawg ntawm anode yam tsis tas yuav tsum muaj anode activator.
7. Txhim kho cov khoom siv kho tshuab thiab lub cev ntawm cov txheej txheem, xws li kev ua kom ceev kom txo tau qhov chaw thiab lub cev ua haujlwm, txhim kho toughness, hnav tsis kam, corrosion kuj, thiab tswj cov hardness ntawm txheej.
