Taw qhia rau Linear DC Regulated Power Supply
1) Transistor series DC stabilized fais fab mov: Lub transistor series DC stabilized fais fab mov ua hauj lwm nyob rau hauv ib tug linear amplification xeev, yog li nws muaj ceev teb, high voltage stability thiab load stability, me me tso zis ripple voltage, thiab tsis muaj suab nrov. Nyob rau hauv cov nqe lus ntawm circuit technology, nws tswj Circuit Court siv tsawg lub Cheebtsam. Tsis muaj qhov tshwj xeeb uas yuav tsum tau ua rau cov yam ntxwv hloov pauv ntawm lub raj hloov thiab kev ua haujlwm siab ntawm cov lim dej, yog li kev ntseeg siab yog siab.
Ib qho tsis zoo ntawm cov khoom siv hluav taws xob tswj hwm yog lawv cov kev ua haujlwm qis. Txhawm rau txhim kho kev ua tau zoo, nws yog ib qho tsim nyog los txo qhov kev poob siab ntawm cov kav dej tswj thiab txo qhov poob ntawm cov kav dej tswj. Kev daws: ① PNP thiab NPN transistors yog complementary: Thaum lub tso zis fais fab mov tam sim no ntawm lub series tswj fais fab mov loj, lub hloov raj feem ntau txuas nrog ib tug Darlington ua ke raj nrog ib tug ntau collector. Vim hais tias thaum cov hluav taws xob tsis zoo ntawm cov transistors zoo ib yam thiab tam sim no amplification yam tseem ceeb yog khaws cia sib npaug, lub collector-emitter voltage poob ntawm lub complementary txuas txuas ua ke hloov raj yog txo, yog li ntawd lub efficiency ntawm lub hwj chim mov yog zoo dua; ② Txoj kev tsis ncaj ncees: kev sib xyaw ua ke sib xyaw ua ke Cov hluav taws xob poob ntawm lub raj xa khoom thiab cov emitter nyob ntawm qee qhov ntawm qhov tsis ncaj ncees tam sim no. Txoj kev sib txuas tsis ncaj ncees tuaj yeem txhim kho cov khoom siv hluav taws xob zoo thaum cov zis tam sim no tas li; ③ Cov kev hloov pauv hloov pauv yog siv rau kev kho ua ntej: Thaum qhov kev tawm tswv yim-tso tawm qhov hluav taws xob sib txawv yog qhov loj thiab cov zis tam sim no kuj tseem loj, lub tshuab hloov hluav taws xob yog siv Pre-regulation ntawm series voltage regulators kuj yog ib txoj hauv kev zoo los txhim kho lub zog. efficiency. Hloov cov kev cai ua ntej kuj tuaj yeem teem rau ntawm thawj sab ntawm lub hwj chim transformer.
2) Kev txhim kho ntawm cov kab hluav taws xob sib xyaw ua ke: Hauv kev ua lag luam thaum ntxov, muaj ntau lub tuam txhab tsim hluav taws xob sib xyaw ua ke nrog cov khoom siv loj thiab siv dav. Muaj ob pawg tseem ceeb: semiconductor monolithic integrated voltage regulators thiab hybrid integrated voltage regulators. Lawv cov ntaub ntawv Circuit Court, DC tswj cov khoom siv hluav taws xob, qhov hluav taws xob thiab qhov tshwj xeeb tam sim no yog txhua yam sib txawv. Integrated voltage regulators yuav muab faib ua qhov voltage, adjustable, taug qab thiab ntab. Tab sis tsis muaj teeb meem dab tsi lawv yog, lawv feem ntau muaj qhov siv hluav taws xob siv hluav taws xob, kev sib piv amplifier, kev hloov kho, lub zog transistor, thiab qee hom kev txwv tam sim no. Qee qhov sib xyaw ua ke hluav taws xob tswj hwm kuj muaj cov logic kaw hauv Circuit Court thiab thermal cutoff circuits. Piv nrog rau cov khoom siv hluav taws xob uas muaj cov khoom sib cais, qhov zoo ntawm cov hluav taws xob sib xyaw ua ke yog qhov pom tseeb, suav nrog tus nqi qis, me me, yooj yim ntawm kev siv, kev ua haujlwm zoo, thiab kev ntseeg siab.
3) Cov khoom siv hluav taws xob tsis tu ncua tam sim no-stabilized fais fab mov tshuab: Kev siv cov khoom siv hluav taws xob tsis tu ncua tam sim no yog cov yam ntxwv ntawm cov khoom siv hluav taws xob tam sim no. Kev siv lub network tam sim no tuaj yeem txhim kho qhov ruaj khov ntawm lub zog hluav taws xob. Cov tes hauj lwm tsis tu ncua tam sim no feem ntau yog siv hauv kev sib koom ua ke ntawm cov tswj hluav taws xob. Series regulators tsim los ntawm cov khoom sib cais kuj tseem siv cov thev naus laus zis tsis tu ncua. Tsis tu ncua tam sim no tuaj yeem ua tiav siv cov khoom siv xws li transistors, teb cov nyhuv transistors thiab cov diodes tsis tu ncua tam sim no. Tam sim no diodes tsis tu ncua yog yooj yim dua los siv nyob rau hauv series regulators nrog discrete Cheebtsam.
