1. Kev tiv thaiv
Lub voj voog ntawm kev hloov hluav taws xob tswj hluav taws xob yog qhov nyuaj dua, thiab tuaj yeem muab faib ua ib feem ntawm kev tswj hluav taws xob qis thiab lub zog hloov hluav taws xob. Hloov cov transistors muaj zog heev. Txhawm rau tiv thaiv kev nyab xeeb ntawm kev hloov cov transistors thaum tig los yog tawm ntawm lub hwj huam mov, cov hluav taws xob tswj hluav taws xob qis xws li modulators thiab amplifiers yuav tsum ua haujlwm ua ntej. Rau qhov kawg no, nws yog ib qho tsim nyog los xyuas kom meej cov txheej txheem khau raj kom raug.
Cov tswv yim kawg ntawm kev hloov regulator feem ntau txuas nrog cov khoom siv lim nrog ib qho me me inductance thiab lub peev xwm loj. Thaum lub sij hawm ntawm lub hwj chim-on, ib tug loj surge tam sim no yuav ntws los ntawm lub lim capacitor, thiab qhov surge tam sim no yuav ua tau ob peb zaug ntawm cov input tam sim no. Xws li ib tug loj surge tam sim no tuaj yeem yaj cov kev sib cuag ntawm cov hluav taws xob zoo tib yam los yog cov relays thiab tshuab cov fuse input. Tsis tas li ntawd, inrush tam sim no tuaj yeem ua rau cov capacitor puas, ua rau lawv lub neej luv thiab ua rau tsis ua haujlwm ntxov. Vim li no, ib qho kev txwv tam sim no yuav tsum tau txuas nrog thaum pib, thiab lub capacitor yuav tsum tau them los ntawm qhov tam sim no-txheej resistor. Txhawm rau kom tsis txhob ua rau tam sim no txwv tsis pub siv lub zog ntau dhau thiab cuam tshuam rau kev ua haujlwm ib txwm muaj ntawm lub tshuab hloov pauv, lub relay yog siv los txiav luv luv-circuit nws tom qab pib txheej txheem, kom DC fais fab mov ncaj qha muab lub zog rau lub switching regulator.
2. Kev tiv thaiv overcurrent
Thaum muaj cov xwm txheej tsis txaus ntseeg xws li thauj khoom luv luv, dhau los lossis tswj kev ua haujlwm tsis ua haujlwm, qhov tam sim no ntws los ntawm kev hloov pauv hloov pauv hauv qhov hluav taws xob stabilizer yuav loj dhau, uas yuav ua rau kom lub zog noj ntawm lub raj thiab ua kom sov. Yog tias tsis muaj cov cuab yeej tiv thaiv overcurrent, lub zog hluav taws xob hloov pauv hloov pauv yuav raug puas tsuaj. Yog li ntawd, kev tiv thaiv overcurrent feem ntau yog siv los hloov cov regulators. Txoj kev pheej yig tshaj plaws thiab yooj yim yog siv lub fuse. Vim yog lub peev xwm me me ntawm lub tshuab hluav taws xob, cov fuses zoo tib yam feem ntau tsis tuaj yeem ua lub luag haujlwm tiv thaiv, thiab cov fuses ceev ceev feem ntau siv. Txoj kev no muaj qhov zoo ntawm kev tiv thaiv yooj yim, txawm li cas los xij, qhov tshwj xeeb ntawm lub fuse yuav tsum raug xaiv raws li qhov yuav tsum tau ua ntawm thaj chaw ua haujlwm nyab xeeb ntawm qhov tshwj xeeb hloov transistor. Qhov tsis zoo ntawm qhov ntsuas tiv thaiv overcurrent yog qhov tsis yooj yim ntawm kev hloov fuse nquag.
4. Kev tiv thaiv overvoltage
Kev tiv thaiv overvoltage ntawm switching regulators muaj xws li input overvoltage tiv thaiv thiab output overvoltage tiv thaiv. Yog tias qhov hluav taws xob tsis raug cai DC fais fab mov xws li roj teeb thiab cov khoom siv hluav taws xob siv los ntawm lub tshuab hluav taws xob hloov hluav taws xob siab dhau lawm, lub tshuab hloov hluav taws xob tsis tuaj yeem ua haujlwm ib txwm, thiab tseem ua rau cov khoom siv sab hauv puas. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum siv lub input overvoltage tiv thaiv Circuit Court.
5. Kev tiv thaiv hauv qab-voltage
Thaum cov zis voltage qis dua tus nqi teev, nws qhia txog qhov txawv txav hauv cov tswv yim DC fais fab mov, hauv qhov hloov pauv, lossis cov khoom tso tawm. Thaum lub input DC fais fab mov voltage poob qis dua tus nqi teev, cov zis hluav taws xob ntawm lub tshuab hloov hluav taws xob yuav poob thiab cov tswv yim tam sim no yuav nce, uas yuav ua rau muaj kev phom sij rau ob qho tib si hloov transistor thiab cov khoom siv hluav taws xob. Yog li ntawd, yuav tsum muaj kev tiv thaiv under-voltage.
6. Kev tiv thaiv overheating
Kev sib koom ua ke siab, lub teeb yuag thiab qhov ntim me me ntawm kev hloov cov tswj hwm zoo heev ua rau lub zog ntom ntom ntawm ib chav tsev ntim, thiab cov kev xav tau ntawm cov khoom siv hauv cov khoom siv hluav taws xob rau lawv qhov chaw ua haujlwm kub kuj nce raws li. Txwv tsis pub, kev ua haujlwm hauv Circuit Court yuav deteriorate thiab cov khoom yuav ua tsis tiav ntxov. Yog li ntawd, kev tiv thaiv overheating yuav tsum tau teem rau hauv high-power switching regulators.
