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Lub hauv paus ntsiab lus ua haujlwm ntawm kev hloov hluav taws xob hloov pauv - 12v rau 5v hloov hluav taws xob muab tshuaj ntsuam xyuas

Oct 14, 2022

1. Main Circuit Court

Inrush tam sim no limiter: Txwv cov inrush tam sim no ntawm sab tswv yim thaum lub hwj chim qhib.


Input filter: Nws muaj nuj nqi yog lim cov clutter uas twb muaj lawm nyob rau hauv daim phiaj thiab tiv thaiv lub clutter generated los ntawm lub tshuab los ntawm pub rov qab mus rau daim phiaj.


Rectification thiab filtering: ncaj qha kho lub zog AC ntawm daim phiaj rau hauv DC smoother.


Inverter: Hloov cov hluav taws xob ncaj qha tam sim no rau hauv high-frequency alternating tam sim no, uas yog qhov tseem ceeb ntawm cov khoom siv hluav taws xob ntau zaus.


Tso zis rectification thiab filtering: Muab ruaj khov thiab txhim khu kev qha DC lub zog raws li qhov xav tau ntawm cov khoom thauj.


2. Tswj Circuit Court

Ntawm qhov tod tes, coj cov qauv los ntawm qhov kawg tso zis, piv nrog cov nqi teev, thiab tom qab ntawd tswj cov inverter kom hloov nws cov mem tes dav lossis zaus kom ruaj khov rau cov zis; Lub Circuit Court tswj ua ntau yam kev tiv thaiv rau lub hwj chim mov.


3. Kev kuaj xyuas Circuit Court

Muab ntau yam kev ntsuas thiab ntau yam ntsuas cov ntaub ntawv hauv kev ua haujlwm hauv kev tiv thaiv Circuit Court.


4. Pab txhawb zog

Paub txog cov software (chaw taws teeb) pib ntawm lub hwj chim, thiab muab lub zog rau kev tiv thaiv Circuit Court thiab tswj Circuit Court (chips xws li PWM).


1. Lub hauv paus ntsiab lus ua haujlwm ntawm pulse oscillator

1) Pib ntawm pulse oscillator


Lub hwj huam mov muab rau pem hauv ntej bias voltage mus rau b ncej (hauv paus) thiab e ncej (emitter) ntawm Q3 (transistor) los ntawm R10, R10A thiab R15, yuam Q3 mus rau hauv lub xeev ua.


2. Cov txheej txheem oscillation ntawm mem tes oscillator


Thaum Q3 nkag mus rau hauv lub xeev conduction, ntxiv rau Vc yuav dhau los ntawm thawj kauj ntawm lub mem tes transformer, c ncej, e ncej ntawm Q3, thiab R15 mus rau -Vc ntawm lub hwj huam mov. Lub sijhawm no, cov kauj ruam thib ob ntawm lub tshuab hluav taws xob hloov pauv yuav tsim kom muaj peev xwm ua tau, thiab qhov thib ob Ib qho kawg ntawm lub kauj yog txuas nrog -Vc, thiab lwm qhov kawg txuas nrog b ncej ntawm Q3 txog R12 thiab C8, thiab qhov kawg yog txuas nrog b ncej ntawm Q3 txog R12 thiab C8. polarity ntawm induced muaj peev xwm thiab tus kheej-inductive peev xwm ntawm lub hauv paus kauj yog tib polarity (lub sab sauv kawg ntawm lub thawj kauj nyob rau hauv daim duab muaj tib lub npe. Terminal), thiaj li hais tias b ncej ntawm Q3 tau txais lub hauv paus loj. tam sim no, uas accelerates qhov conduction ntawm Q3 kom txog rau thaum Q3 nkag mus rau lub saturation xeev. Lub Circuit Court yog qhia hauv daim duab 3.


Thaum Q3 saturated, Ic tsis hloov lawm, thiab lub waveform yog los ntawm t 0 mus rau t3 nyob rau hauv daim duab 4. Tom qab cov txheej txheem saturation ntawm t3 mus rau t4, lub polarity ntawm tus kheej-inductive muaj peev xwm thiab induced muaj peev xwm yuav. thim rov qab, uas yog, sab sauv yog qhov tsis zoo thiab qis dua yog qhov zoo. Qhov thim rov qab muaj peev xwm nyob rau hauv cov kauj ruam thib ob, tus ncej zoo yog ntxiv rau e ncej ntawm Q1 txog R15, thiab tus ncej tsis zoo yog ntxiv rau b ncej ntawm Q3 txog R12 thiab C8, yog li Q3 yog nyob rau hauv qhov rov qab tsis zoo, ua rau Q3 kom hloov pauv sai sai ntawm saturation mus rau Off state, t4 rau t6 hauv daim duab. Tom qab Q3 raug tua, qhov rov qab muaj peev xwm thiab rov qab tam sim no tsim nyob rau hauv thawj kauj yog sai sai absorbed los ntawm lub nqus Circuit Court muaj li ntawm D8, R17, thiab C7, los ntawm t6 mus rau t7 nyob rau hauv daim duab. Ib lub voj voog oscillation tiav. Tom qab ntawd, lub oscillator Circuit Court yuav rov ua cov txheej txheem saum toj no ntau zaus.


Qhov zaus ntawm cov mem tes oscillator yog txiav txim siab los ntawm inductance ntawm C8 thiab txuas txuas txuas txuas txuas.


Lab power supply

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