Switching Power Supply Basic Cheebtsam
Cov txheej txheem ua haujlwm ntawm kev hloov hluav taws xob hloov pauv yooj yim nkag siab thiab muaj peb yam sib txawv:
Switching: lub hwj chim hluav taws xob ua haujlwm nyob rau hauv lub xeev hloov es tsis yog lub xeev linear.
High zaus: lub zog hluav taws xob hluav taws xob ua haujlwm ntawm lub siab zaus ntau dua li ntawm qhov tsawg zaus ze rau kev lag luam zaus.
DC: lub zog hloov hluav taws xob tso tawm DC hloov AC, thiab tseem tuaj yeem tso zis ntau zaus AC xws li hluav taws xob hloov hluav taws xob.
Hloov cov khoom siv hluav taws xob yooj yim
1, Main Circuit Court
Inrush tam sim no limiting: txwv cov inrush tam sim no ntawm sab input thaum lub sij hawm lub hwj chim rau.
Cov tswv yim lim: nws lub luag haujlwm yog lim qhov muaj cov suab nrov ntawm kab sib chaws thiab cuam tshuam lub tshuab tsim los ntawm lub suab tawm tswv yim rov qab mus rau daim phiaj.
Rectification thiab Lim: Ncaj qha kho lub zog AC ntawm daim phiaj mus rau lub zog DC smoother.
Inverting: hloov lub rectified DC rau hauv high-frequency AC, uas yog ib feem ntawm high-frequency switching fais fab mov.
Output rectification thiab filtering: muab kev ruaj khov thiab txhim khu kev qha DC fais fab mov raws li qhov xav tau ntawm cov khoom thauj.
2, Tswj Circuit Court
Ntawm ib sab, nws siv cov qauv ntawm cov zis, piv nrog cov nqi teev, thiab tom qab ntawd mus tswj lub inverter, hloov nws cov mem tes dav lossis mem tes zaus, thiab ua rau cov zis ruaj khov, ntawm qhov tod tes, raws li cov ntaub ntawv muab. los ntawm kev ntsuas Circuit Court, nws raug txheeb xyuas los ntawm kev tiv thaiv Circuit Court, thiab muab cov kev tswj xyuas Circuit Court kom ua tiav txhua yam kev tiv thaiv kev ntsuas rau lub zog hluav taws xob.
3, Test Circuit Court
Muab cov kev tiv thaiv Circuit Court yog khiav nyob rau hauv ib tug ntau yam ntawm tsis thiab ntau yam kev ntsuas cov ntaub ntawv.
4, Pab txhawb zog
Nws paub txog software (chaw taws teeb) pib ntawm lub zog hluav taws xob thiab khoom siv hluav taws xob rau kev tiv thaiv Circuit Court thiab tswj Circuit Court (PWM thiab lwm yam chips).
Switching power supply classification:
Cov neeg nyob rau hauv lub tshav pob ntawm kev hloov fais fab mov tshuab yog ib sab ntawm txoj kev loj hlob ntawm cov khoom siv hluav taws xob muaj feem xyuam nrog, thaum txoj kev loj hlob ntawm switching inverter technology, ob qho tib si txhawb ib leeg los txhawb kev hloov hluav taws xob hloov mus rau ntau tshaj li ob tus lej loj hlob txhua xyoo. ntawm lub teeb, me me, nyias, tsis tshua muaj suab nrov, muaj kev ntseeg siab, tiv thaiv kev cuam tshuam ntawm kev loj hlob. Hloov fais fab mov tuaj yeem muab faib ua ob pawg: AC / DC thiab DC / DC.
Miniature low power switching power supply
Hloov fais fab mov yog txav mus rau huab hwm coj thiab miniaturization. Hloov fais fab mov yuav maj mam hloov lub transformer nyob rau hauv lub neej ntawm tag nrho cov kev siv, uas tsis muaj hwj chim me me hloov fais fab mov daim ntaub ntawv los ua thawj embodied nyob rau hauv lub digital zaub meter, ntse meter, mobile charger thiab hais txog. Nyob rau theem no, lub teb chaws tau txhawb nqa kev tsim kho ntawm daim phiaj ntse, cov kev xav tau ntawm lub ntsuas hluav taws xob tau nce ntxiv, kev hloov hluav taws xob hloov pauv yuav maj mam hloov pauv hauv lub ntsuas hluav taws xob saum toj ntawm daim ntawv thov.
Inverting series hloov fais fab mov
Qhov sib txawv ntawm inverting series switching fais fab mov thiab dav series hloov fais fab mov yog qhov tso zis voltage ntawm no inverting series switching fais fab mov yog tsis zoo voltage, uas yog raws nraim opposite rau qhov zoo voltage tso zis ntawm general series switching fais fab mov; thiab vim hais tias lub zog cia inductor L tsuas yog tso tawm tam sim no mus rau lub load thaum lub hloov K yog muab tua, yog li ntawd, nyob rau hauv tib yam kev mob, cov zis tam sim no ntawm inverting series hloov fais fab mov yog ob zaug me me li ntawm series hloov fais fab mov. Qhov tam sim no yog ob zaug tsawg dua li ntawm cov koob hloov hluav taws xob nyob rau hauv tib lub sijhawm.
