Lub hauv paus ntsiab lus ua haujlwm thiab kev qhia yooj yim ntawm DC voltage stabilized fais fab mov
Cov kab hluav taws xob thaiv hluav taws xob ntawm cov transistor series-hom DC tswj fais fab mov yog qhia hauv daim duab.
Lub rectifier lim circuit muaj xws li lub hwj chim transformer, rectifier circuit thiab lim circuit. Semiconductor circuits feem ntau siv DC fais fab mov 6V, 12V, 18V, 24V, 30V thiab lwm yam kev ntsuas hluav taws xob, thaum daim phiaj hluav taws xob feem ntau yog 220V AC, los hloov AC voltage ntawm daim phiaj mus rau qhov yuav tsum tau DC voltage, ua ntej ntawm tag nrho cov. lub hwj chim transformer kauj ruam-down, thiab tom qab ntawd los ntawm lub rectifier Circuit Court yuav tig mus rau hauv ib tug pulsating AC DC, vim lub rectified voltage kuj muaj ib tug loj AC tivthaiv yuav tsum tau lim los ntawm lub lim Circuit Court, uas yuav lim los ntawm lub rectifier Circuit Court. Lub rectified voltage muaj ib tug loj AC tivthaiv, uas yuav tsum tau lim tawm los ntawm lub lim circuit kom tau ib tug smoother DC voltage.
Tom qab lub lim dej tom qab DC voltage, txawm hais tias lub pulsation me me, tab sis tus nqi ntawm qhov hluav taws xob tseem tsis ruaj khov, lub ntsiab yog vim li cas rau peb yam: Ua ntej, AC grid voltage feem ntau yog ± 10% fluctuations, thiab yog li yuav ua rau. lub rectifier lim tso zis DC voltage kuj yog ± 10% hloov pauv; Secondly, lub rectifier lim Circuit Court muaj ib tug nyob rau hauv tsis kam, thaum lub load tam sim no hloov nyob rau hauv lub internal kuj mus rau lub voltage landing kuj yuav hloov, thiaj li hais tias cov zis DC voltage kuj hloov; Thib peb, nyob rau hauv lub rectifier regulator Circuit Court, vim yog siv cov semiconductor cov yam ntxwv hloov nrog lub ambient kub, yog li kuj ua rau cov zis voltage tsis ruaj khov.
Voltage regulator circuits tuaj yeem ua kom cov zis DC voltage ruaj khov kom nws tsis hloov nrog cov kev hloov pauv hauv daim phiaj voltage, load lossis kub. Lub series hom voltage regulator circuit muaj kev hloov kho txuas, kev sib piv amplifier circuit, sampling circuit, reference voltage thiab lwm yam. Lub raj hloov kho nyob rau hauv qhov kev hloov kho txuas yog txuas nrog nyob rau hauv series ntawm lub lim Circuit Court thiab lub load, yog li nws yog hu ua series-type voltage regulator circuit. Kev kho lub raj yog sib npaug rau qhov sib txawv ntawm qhov sib txawv, yog tias qhov tso zis hluav taws xob nce, qhov kev tiv thaiv tus nqi nce ntxiv, kom cov zis hluav taws xob rov qab; Hloov pauv, yog tias qhov tso zis hluav taws xob poob qis, qhov kev tiv thaiv tus nqi txo qis raws li, kom cov zis voltage nce. Qhov no kho qhov tso zis voltage kom nws tas li, koj tuaj yeem ua tiav lub hom phiaj ntawm kev tswj hluav taws xob.
Cov qauv ntsuas hluav taws xob siv cov txheej txheem ntawm cov resistor divider los ua piv txwv qhov kev hloov pauv ntawm cov zis hluav taws xob hauv ib qho kev faib ua feem rau cov teeb liab sampling. Qhov siv hluav taws xob yog qhov ruaj khov thiab tus qauv siv hluav taws xob. Sampling teeb liab thiab siv voltage nyob rau tib lub sij hawm ntxiv rau qhov sib piv amplifier Circuit Court rau kev sib piv, thiab ces amplify qhov sib txawv ntawm ob, nrog rau amplified voltage tswj lub hauv paus ntawm lub regulator raj txhaj rau hauv lub tam sim no, yog li hloov lub regulator lub DC sab hauv. tsis kam, kho qhov tso zis voltage stabilization. Txhawm rau txhim kho kev ua haujlwm ntawm tus tswj hwm, qhov sib piv amplifier Circuit Court feem ntau yog siv ob-theem sib txawv amplifier, amplification loj dua, muaj peev xwm tswj tau, ua raws li kev sib piv amplifier Circuit Court kuj yuav tsum muaj me me xoom drift, zoo kub stability.
Cov saum toj no rectifier lim Circuit Court thiab series-hom voltage regulator circuit ua ke, kuj hu ua lub ntsiab fais fab mov. Lub hauv paus ntsiab lus ntawm kev tswj hluav taws xob yog qhov no: yog tias qhov tso zis hluav taws xob nce vim qhov hluav taws xob hluav taws xob lossis kev hloov pauv, cov qauv ntsuas hluav taws xob tsim los ntawm cov qauv ntsuas hluav taws xob kuj nce, ces qhov ntsuas qhov ntsuas hluav taws xob ntau dua li qhov siv hluav taws xob, qhov sib txawv yog amplified los ntawm kev sib piv amplifier. Circuit Court, tom qab hloov kho txuas kom qhov kev hloov ntawm lub raj lub emitter junction voltage, lub hauv paus tam sim no txo, qhov kev hloov ntawm lub raj DC kuj nce, lub raj voltage poob nce, yog li ua rau cov zis voltage txo qhov tso zis voltage kom muaj kev ruaj ntseg. ntawm qhov output voltage. Ib yam li ntawd, thaum cov zis hluav taws xob txo qis, los ntawm cov txheej txheem zoo sib xws, kom DC sab hauv tsis kam ntawm lub raj hloov pauv, nws lub raj hluav taws xob poob qis, yuav ua rau cov zis hluav taws xob rov qab, yog li qhov pib tsis hloov.
