Voltage Regulation Principple of Operation of Series Regulated Power Supplies
Piv txwv tias qhov tso zis hluav taws xob UO raug txo vim qee yam, uas yog, qhov hluav taws xob emitter (UT1) E ntawm T1 raug txo, vim UD1 tseem tsis hloov, yog li ua rau T1 emitter junction voltage (UT1) BE nce, ua rau lub zog hluav taws xob. T1 puag tam sim no (IT1) B nce, uas ua rau T1 emitter tam sim no (IT1) E yuav tsum tau amplified los ntawm ib qho tseem ceeb ntawm nce, raws li tau pom los ntawm transistor lub loading yam ntxwv, uas yog thaum lub T1 conduction yog ntau txaus tube. voltage nco (UT1) CE yuav raug txo kom sai, cov input voltage UI ntxiv rau lub load, UO tau rov qab sai. Cov txheej txheem hloov kho no tuaj yeem qhia tau siv cov duab sib txawv hauv qab no:
UO↓ →(UT1)E↓ →UD1 tas li →(UT1)BE↑→(IT1)B↑→(IT1)E↑→(UT1)CE↓ →UO↑
Thaum cov zis voltage nce, tag nrho cov txheej txheem kev soj ntsuam yog qhov sib txawv ntawm qhov kev hloov ntawm cov txheej txheem saum toj no, peb yuav tsis rov qab los ntawm no, tab sis tsuas yog qhia los ntawm cov kab ke kev sib raug zoo hauv qab no:
UO↑ →(UT1)E↑ →UD1 tas li →(UT1)BE↓ →(IT1)B↓→(IT1)E↓→(UT1)CE↑ →UO↓
Ntawm no peb tsuas yog txheeb xyuas qhov tso zis hluav taws xob UO txo qhov hluav taws xob tswj txoj cai ntawm kev ua haujlwm, qhov tseeb, cov khoom siv hluav taws xob UI txo qis hauv lwm yam xws li kev tswj hluav taws xob hluav taws xob ntawm kev ua haujlwm zoo ib yam li qhov no, * thaum kawg tau cuam tshuam rau qhov tso zis voltage UO txo, yog li lub hauv paus ntsiab lus ntawm kev ua haujlwm yog roughly tib yam.
Los ntawm lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub voj voog tuaj yeem pom, tus yuam sij rau voltage stabilization ntawm ob lub ntsiab lus: ib qho yog regulator D1 regulator tus nqi UD1 kom ruaj khov; Qhov thib ob yog kho lub raj T1 los ua haujlwm hauv cheeb tsam amplification thiab cov yam ntxwv ua haujlwm yuav tsum zoo.
Kev ceev faj rau kev siv DC tswj fais fab mov
1. Txhawm rau tiv thaiv kev sib nqus cuam tshuam, tus tswj hwm thiab siv cov cuab yeej muab tso rau ntawm qhov kev ncua deb yuav tsum tsis pub tsawg tshaj 2 meters. Txhua yam ntaub ntawv sib nqus, discs, phaib, thiab lwm yam yuav tsum tau khaws cia kom deb ntawm lub tshuab 2 meters deb, txhawm rau tiv thaiv kev sib nqus sib nqus.
2. Voltage regulators feem ntau muaj xws li input terminals (A, B, C), tso zis terminals (a, b, c, n), shielding, core plhaub grounding terminals. Cov terminals no tau raug kev cob cog rua hauv lub voltage regulator system.
3. Yog hais tias lub load imbalance ntau tshaj 20%, txuas ib tug resistive load nyob rau hauv parallel nrog lub lightly loaded theem kom sib npaug. Ib yam li ntawd, yog tias qhov tsis sib npaug ntawm cov kab hluav taws xob ntawm qhov kev tawm tswv yim yog ntau dua 10%, nws tseem yuav cuam tshuam rau qhov voltage regulator qhov kev ua tau zoo. Nyob rau hauv cov ntaub ntawv no, ib tug ib-theem regulator yuav tsum tau teem nyob rau hauv lub input kom cov kab voltage ntawm cov input yeej balanced. Input voltage thiab load ob qhov sib npaug degree tsis tshaj qhov saum toj no ntau, cov zis kab hluav taws xob tsis sib npaug tsawg dua lossis sib npaug li 5%.
4. Thaum cov khoom siv thauj khoom muaj qhov luv luv, tus neeg siv yuav tsum tau kaw lub tshuab los xyuas thiab tshem tawm qhov kev ua txhaum luv luv thiab tom qab ntawd tig lub tshuab rov qab. 5. Thaum ua haujlwm tsis tu ncua rau lub sijhawm ntev, lub tshuab muaj qhov kub thiab txias, qhov taw qhia tus nqi yuav qis dua tus nqi hluav taws xob tiag tiag. 6. Yuav tsum tau muab tso rau hauv qhov chaw uas muaj qhov cua zoo, yog tias qhov cua tsis zoo, thov nruab ib lub tshuab cua hauv chav.
