Hloov cov ntawv thov hluav taws xob thiab cov yam ntxwv
Switching fais fab mov muaj cov yam ntxwv tseem ceeb hauv qab no:
1. Qhov loj me, lub teeb yuag: vim tsis muaj kev lag luam zaus transformer, yog li lub ntim thiab qhov hnyav tsuas yog 20 mus rau 30% ntawm linear fais fab mov.
2. Kev siv hluav taws xob me me, kev ua haujlwm siab: lub zog transistors ua haujlwm nyob rau hauv lub xeev hloov, yog li lub zog siv ntawm lub transistor me me, kev hloov pauv kev ua haujlwm siab, feem ntau 60 txog 70%, thaum lub zog linear tsuas yog 30 mus rau 40%. .
Lub hauv paus ntsiab lus ua haujlwm ntawm kev hloov hluav taws xob yog.
1. AC fais fab input yog rectified thiab lim rau DC; 2.
2. Los ntawm lub high-frequency PWM (Pulse Width Modulation) teeb liab tswj switching tube, lub DC ntxiv rau thawj switching transformer.
3. Hloov transformer theem nrab induction ntawm high-frequency voltage, rectified thiab lim los muab cov load.
4. Cov khoom tso tawm yog pub rov qab mus rau qhov kev tswj xyuas Circuit Court los ntawm qee qhov Circuit Court los tswj PWM lub luag haujlwm voj voog kom ua tiav lub hom phiaj ntawm cov zis ruaj khov.
AC fais fab input feem ntau mus los ntawm lub voj tam sim no, lim tawm cov kab sib txuas, tab sis kuj lim tawm cov khoom siv hluav taws xob ntawm daim phiaj cuam tshuam; nyob rau hauv tib lub hwj chim, qhov siab dua qhov hloov zaus, hloov pauv hloov pauv me me, tab sis qhov siab dua qhov yuav tsum tau ua ntawm lub raj hloov pauv; switching transformer muaj peev xwm muaj ntau tshaj ib theem nrab winding los yog ib tug winding nrog ib tug xov tooj ntawm kais dej, thiaj li yuav tau txais qhov xav tau tso zis; feem ntau yuav tsum tau ntxiv qee qhov kev tiv thaiv Circuit Court, xws li tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load. tsis muaj load, tsis muaj load, tsis muaj load, tsis muaj load, thiab lwm yam. Feem ntau, qee qhov kev tiv thaiv Circuit Court yuav tsum tau ntxiv, xws li tsis muaj-load, luv luv-circuit tiv thaiv, txwv tsis pub lub switching fais fab mov yuav raug hlawv.
Feem ntau siv hauv kev lag luam thiab qee yam khoom siv hauv tsev, xws li TV, khoos phis tawj thiab lwm yam.
Monolithic switching fais fab mov tawm tswv yim Circuit Court ntawm plaub yam yooj yim
(1) Cov lus qhia yooj yim Circuit Court; (2) Txhim kho kev tawm tswv yim Circuit Court; (3) Txhim kho kev tawm tswv yim Circuit Court; (4) Txhim kho kev tawm tswv yim Circuit Court; (5) Txhim kho kev tawm tswv yim Circuit Court.
(2) Txhim kho cov lus qhia yooj yim Circuit Court.
(3) Optocoupler tawm tswv yim Circuit Court nrog voltage regulator; (4) Optocoupler tawm tswv yim Circuit Court nrog voltage regulator; (5) Optocoupler tawm tswv yim Circuit Court nrog voltage regulator
(4) Optocoupler tawm tswv yim Circuit Court nrog TL431.
Nrog TL431 optocoupler tawm tswv yim Circuit Court, Circuit Court yog ntau nyuaj, tab sis qhov voltage regulator kev ua tau zoo * zoo. Ntawm no nrog TL431- hom adjustable precision shunt regulator los hloov cov voltage regulator zoo tib yam, tsim ib tug sab nraud yuam kev amplifier, thiab ces UO rau kev kho kom zoo, qhov voltage hloov thiab load hloov tus nqi yuav ncav cuag ± 0. 2%, piv rau linear tswj fais fab mov. Qhov kev tawm tswv yim Circuit Court no yog tsim rau muaj pes tsawg leeg ntawm precision switching fais fab mov.
Kev tshuaj xyuas ntawm cov laj thawj tseem ceeb ntawm kev puas tsuaj rau lub zog hloov hluav taws xob module:
1 Lub tshuab hluav taws xob hloov pauv tsis tau teeb tsa raws li qhov tseeb DC load N+1, (load tam sim no them tam sim no yog teem rau 10% ntawm lub peev xwm ntsuas ntawm lub roj teeb pob.);
2 Lub module feem ntau nyob rau hauv tag nrho cov load.
3 System tam sim no sib npaug ua rau lub module khiav ntawm tag nrho cov load.
4 Lub ambient kub ntawm chav tshuab yog siab dhau lawm.
5 Tsis tu ncua kev tu ntawm lub module lim (cov lim dej qias neeg yog ib qho yooj yim los ua kom muaj kev ruaj ntseg module, tsim kom muaj qhov kub thiab txias tsis tuaj yeem tawg raws sijhawm,);
6 cov plua plav ntau dhau hauv lub module (vim muaj plua plav nkag. Cov khoom ntim ntawm cov teeb meem zais los ntawm qhov tsis ua haujlwm), muaj cov twj tso kua mis cua ** plua plav;
7 harmonic cuam tshuam.
