Raws li lub zog hluav taws xob rau qee qhov hluav taws xob ntawm kev ua haujlwm amplifiers, lub zog qis ntawm ob peb volts (12-15) feem ntau siv. Txog rau tam sim no, feem ntau siv hluav taws xob tswj hluav taws xob yog 12 volts, ua los ntawm peb qhov tso zis sib xyaw ua ke. Lawv lub hom phiaj yog kom tau txais ntawm cov zis ntawm ntau yam voltages thiab hluav taws xob tam sim no. Cov khoom tseem ceeb yog kev sib koom ua ke ntawm kev tsim khoom hauv tsev KR142EN8B thiab lawv cov analogues txawv teb chaws ntawm MC78xx thiab MC79xx series lossis tsuas yog 78xx thiab 79xx.
Teb chaws thiab txawv teb chaws hom stabilizers
Lavxias teb sab kev koom ua ke KR142EN8B (lub npe hu ua KREN8B) muab qhov tso zis ib txwm muaj ntawm kaum ob volts.
Ntshuam stabilizers ntawm cov koob saum toj no muaj cov npe hauv qab no: thawj tus lej (78) qhiaLub hom phiaj - zoo tso zis tam sim no, khib naj npawb (79) - tsis zoo tso zis voltage. Ob tug lej kawg (12 lossis 05) qhia qhov loj ntawm cov zis hluav taws xob tam sim no. Piv txwv li: 7912 - microcircuit - voltage regulator 12V nrog qhov tsis zoo polarity, 7805 - microcircuit - ib chav tsev zoo sib xws, tsuas yog 5 volts thiab nrog polarity zoo.
Ib tug peb-pin stabilizer, raws li nws lub npe qhia, muaj peb tus pins uas muab kev sib txuas rau ib qho hluav taws xob hluav taws xob sab nraud: kev tawm tswv yim, tawm thiab ntau. Ib lub davhlau ya nyob twg yog siv los txuas rau lub tsev fais fab ("hauv av"). Cov tswv yim thiab cov pins nquag siv los muab cov khoom siv hluav taws xob, thiab cov khoom tso tawm ua haujlwm tau txais ntawm "tso zis" thiab "common" pins.
A 12 volt voltage regulator yuav ua haujlwm ib txwm yog tias cov khoom siv tam sim no ntawm qhov siab tshaj plaws tshaj qhov tso zis los ntawm tsawg kawg 2.5 volts. Nyob rau hauv cov ntaub ntawv no, tus nqi ntawm lub siab tshaj plaws input qhov chaw yuav tsum tsis txhob ntau tshaj peb caug volts. Tsis tas li ntawd, nco ntsoov tias qhov hluav taws xob muaj zog ntxiv ua rau muaj zog ntxiv, thaum 12V stabilizer pib kub. Raws li, txhawm rau tiv thaiv kev puas tsuaj, nws yuav tsum siv lub dab dej kub.
Cov khoom siv hluav taws xob txheem yog sib sau los ntawm lub tshuab hluav taws xob electrolytic nrog lub peev xwm txog li 10,000 microfarads, tag nrho-wave choj rectifier los ntawm diodes nrog qhov rov qab voltage ntawm 50 volts thiab rau pem hauv ntej tam sim no ntawm 3 A, fuse (0.5 A). 12 volt voltage stabilizer- 7912 lossis 7812 (KREN8B).
Siv cov cuab yeej zoo sib xws rau kev ua haujlwm ntawm cov khoom sib dhos, nws yuav tsum tau npaj cov khoom siv hluav taws xob nyob rau hauv txoj kev uas qhov ntev ntawm qhov kev sib txuas yog qhov tsawg tshaj plaws, thiab kev tshem tawm ntawm lub tshuab hluav taws xob yog qhov loj tshaj plaws. Txhawm rau kom txias, nws yog qhov zoo tshaj los siv cov txheej txheem finned radiators nrog thaj chaw txaus, lossis cov hlau phaj.
Cov chaw uas siv 12-volt voltage stabilizer nyob rau hauv lawv cov muaj pes tsawg leeg tso cai rau lawv siv rau powering ntau yam khoom thiab units ua siv TTL integrated logic circuits, nrog rau cov pab kiag li lawm rau automotive khoom.
