Ntaus, lub hauv paus ntsiab lus ntawm kev ua haujlwm thiab daim duab ntawm tus choj rectifier diode

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Hloov hluav taws xob tam sim no hloov mus rau hauv qhov kev hloov pauv tas li los ntawm kev siv cov hluav taws xob tshwj xeeb - diode txuas hniav. Lub rectifier diode choj Circuit Court muab faib ua 2 versions: ib-theem thiab peb-theem.

Hauv kev ua haujlwm ntawm lub rectifier, lub ntsiab tseem ceeb yog lub diode. Structurely, nws yog ib lub phaj ntawm ib tug semiconductor siv lead ua nrog ob thaj tsam ntawm txawv conductivity. Ib qho tshwj xeeb yog ib txoj kev xa hluav taws xob tam sim no, nyob ntawm qhov kev taw qhia ntawm ntws.

Kev tsim thiab kev ua haujlwm ntawm lub diode rectifier yog ua raws li cov yam ntxwv ntawm p-n kev sib tshuam ntawm thaj chaw semiconductor. Nws kuj nyob ntawm polarity ntawm sab nraud voltage. Nyob rau hauv ib rooj plaub nws loj, nyob rau hauv lwm yam nws yog insignificant.

Ib-theem diode choj

Thaum cov tswv yim yog qhov hloov pauv sinusoidal voltage, nyob rau hauv txhua lub voj voog ib nrab, tam sim no dhau los ntawm ib khub ntawm diodes, thiab lwm qhov raug kaw. Yog li ntawd, ntawm qhov tso zis ntawm lub rectifier diode choj Circuit Court,pulsating voltage, qhov zaus uas yog ob zaug ntawm cov tswv yim.

3-theem choj circuit

Circuit Court no siv diode ib nrab-choj rectifiers. Cov zis hluav taws xob ntawm no tau txais nrog tsawg dua ripple.

Yuav ua li cas kom du tawm ripple thaum kho fais fab tuag?

Qhov zoo ntawm qhov kho qhov hluav taws xob txo qis thaum nws cov ripple nce. Txhawm rau txo nws, cov ntsiab lus tau siv los ua kom muaj zog thaum nws los ntawm lub rectifier thiab muab nws tam sim ntawd thaum nws tso tseg.

Nyob rau hauv lub diode choj Circuit Court ntawm lub rectifier nrog ib tug capacitor, lub tom kawg yog txuas nyob rau hauv parallel nrog lub load. Nws lub peev xwm raug xaiv nyob ntawm qhov kev thauj khoom tam sim no. Thaum siv cov mem tes, lub capacitor raug them. Nruab nrab ntawm pulses (thaum tsis muaj), qhov voltage ntawm nws muab rau lub load.

Raws li kev sib tw, qhov tso zis hluav taws xob ntawm lub lim yuav loj dua thiab mus txog qhov amplitude ntawm tus nqi rectified.

Qhov zoo tshaj plaws voltage ntawm cov zis lim tsis tuaj yeem tau txais vim qhov tso tawm ntawm lub capacitor ntawm pulses. Feem ntau xws li ripples tau txais. Lawv tuaj yeem raug txo los ntawm kev ua kom lub peev xwm ntawm lub capacitor.

Yog tias tus inductor siv rau smoothing, nws txuas nrog rau hauv cov khoom thauj. Combined lim circuits muaj xws li chokes thiab capacitors.

Kev tsim cov choj diode

Cov khoom siv txuas yooj yim tshaj plaws yog ua los ntawm kev sib txuas ntawm tus kheej diodes. Hauv kev lag luam, cov qauv monolithic yog tsim, uas tsawg duaqhov ntau thiab tsawg thiab pheej yig dua. Tsis tas li ntawd, diodes nrog cov yam ntxwv zoo sib xws raug xaiv hauv lawv, uas tso cai rau lawv ua haujlwm nrog cov cua sov tib yam. Qhov no txhim kho kev ntseeg tau ntawm lub rectifier diode choj circuit.

Qhov zoo ntawm cov txuas txuas diode los ntawm tus kheej cov ntsiab lus yog qhov muaj peev xwm kho tau thaum ib qho tsis ua tiav. Lub rooj sib txoos yuav tsum tau hloov tag nrho. Kev ua haujlwm tsis zoo hauv nws tsis tshua muaj tshwm sim, txij li cov ntsiab lus raug xaiv raug.

Power Rectifiers

Cov khoom siv uas siv hluav taws xob siab feem ntau yog siv los ntawm 220 V. Cov khoom siv tsis txuas ncaj qha, vim tias qhov hluav taws xob rau hluav taws xob circuits me me, thiab qhov tam sim no tsis tu ncua. Tom qab ntawd siv lub network adapter.

Qhov voltage yog txo los ntawm lub transformer, uas kuj tsim ib tug galvanic cais ntawm cov thawj thiab thib ob muab circuits. Qhov no txo qhov kev pheej hmoo ntawm hluav taws xob poob siab thiab tiv thaiv cov cuab yeej yog tias qhov luv luv tshwm sim hauv Circuit Court.

Niaj hnub nimno adapters feem ntau ua haujlwm raws li qhov yooj yim transformerless Circuit Court yam tsis muaj kev sib cais galvanic, qhov twg qhov hluav taws xob ntau dhau absorbed los ntawm lub capacitor.

12 volt diode choj Circuit Court: cov lus qhia thiab sib dhos

Lub hwj huam mov muaj ob lub qauv, qhov twg thawj zaug yog lub kauj ruam-down transformer, thiab qhov thib ob yog tus choj diode uas hloov ib hom hluav taws xob mus rau lwm qhov.

Ib qho kev hloov pauv tsim nyog raug xaiv. Lub ntsiab winding yog nyob rau hauv uas siv ib tug tester. Nws qhov kev tawm tsam yuav tsum yog qhov loj tshaj. Los ntawm ringing nrog ib tug multimeter nyob rau hauv lub kuj ntsuas hom, qhov tsim nyogkawg. Tom qab ntawd lwm cov khub tau pom thiab ua cim.

220 V yog muab rau thawj winding, ces tus tester hloov mus rau AC voltage ntsuas hom thiab qhov voltage ntawm qhov seem windings yog ntsuas. Koj yuav tsum xaiv lossis cua ib qho ntawm 10V. Nws yog ib qho tseem ceeb uas qhov hluav taws xob tsis yog 12V, vim tias tom qab lub lim capacitive nws nce 18%.

Lub tshuab hloov pauv raug xaiv rau lub zog xav tau, tom qab ntawd cov npoo ntawm 25% raug coj mus.

4 diodes yog twisted rau hauv tus choj diode thiab qhov kawg yog soldered. Tom qab ntawd lub voj voog txuas nrog, 25 V thiab 2200 microfarad capacitor (electrolyte) txuas nrog cov zis thiab kuaj hauv kev ua haujlwm.

Transformerless 24V rectifier diode choj circuit

Hauv kev xyaum siv xov tooj cua, cov khoom siv hluav taws xob qis tsis muaj qhov hloov pauv tau siv dav.

220V lub zog yog muab los ntawm ballast capacitor C1. Lub rectifier muaj diodes VD1, VD2 thiab zener diodes VD3, VD4. Txhawm rau tshem tawm tam sim no surges los ntawm tus choj, 50-100 ohm tam sim no limiting resistor yog ntsia rau hauv series nrog lub capacitor thaum fais fab txuas. Txhawm rau tso lub capacitor thaum lub voj voog tsis ua haujlwm, 150-300 kΩ resistor txuas nrog nws nyob rau hauv parallel.

Ib tug smoothing capacitor nrog lub peev xwm ntawm 2000 microfarads yog ntsia ntawm qhov tso zis ntawm Circuit Court.

Tsis muaj galvanic coupling ua rau muaj kev pheej hmoo ntawm hluav taws xob poob.

Daim ntawv thov

Diode choj daim ntawv thovdav heev thiab sib txawv:

• teeb pom kev zoo (LED thiab fluorescent teeb);
• hluav taws xob ntsuas;
• khoom siv hluav taws xob rau cov khoom siv hluav taws xob;
• kev lag luam fais fab khoom siv, tswj thiab chargers.

Yuav ua li cas xaiv diodes los ua tus choj diode?

Cov qauv xaiv tseem ceeb yog qhov voltage thiab tam sim no uas lub diode tsis overheat. Thaum ncaj qha qhib, qhov hluav taws xob ntawm 0.6 V poob thoob plaws nws, vim nws muaj kev tiv thaiv sab hauv. Qhov hluav taws xob rov qab uas lub diode tuaj yeem tiv taus yam tsis tau nkag mus rau hauv thermal thiab hluav taws xob tawg hom muaj qee qhov txwv. Yog tias nws yog tsim los rau 220 V, ces cov npoo ntawm qhov tsawg kawg yog 25%. Tab sis nws yog qhov zoo dua los nqa nws loj txaus los tiv thaiv kev sib tsoo hluav taws xob.

Tam sim no kuj raug coj los nrog cov npoo. Lub tshuab cua txias yog muab yog tias xav tau.

Rau qhov kev xaiv zoo, siv cov lus siv ntawm diodes thiab diode txuas hniav.

Diode choj manufacturers

Ntawm cov khoom siv teeb pom kev zoo, cov khoom siv hluav taws xob ntawm 1N4007 thiab MS250 series tsim los ntawm Diotec sawv tawm. Lawv yog tsim los rau voltages txog li 1000 V. Nyob rau hauv thawj rooj plaub, lub diode choj Circuit Court muaj 4 diodes muab tso rau ib tug luam Circuit Court board, thiab nyob rau hauv lub thib ob nws yog nthuav raws li ib tug compact sib dhos. Thaum 1N4007 series txhim khu kev qha hauv kev ua haujlwm, MS250 sib dhos txuag qhov hnyav thiab hneev taw. Txawm li cas los xij, qhov kev thov rau 1N4007 series tseem muaj zog raws li tus nqi tau nqisuas yog txiav txim siab los ntawm tus nqi ntawm cov hlau lead.

Kev tsim tshuab ntawm MS series diode txuas txuas txuas ntxiv. Tam sim no tag nrho 4 lub pob zeb ntawm tus choj raug teeb tsa ua ke, uas ua rau nws cov cua sov ua kom muaj zog vim qhov tsis sib xws ntawm qhov tsis sib xws.

Qhov kev ntseeg tau ntawm rectifiers txo qis thaum qhov kub thiab txias nce. Qhov teeb meem no tau daws los ntawm B250S2A series, uas yog ntsuas ntawm 2.3A thiab dhau 0.7A ntawm 125 ° C.

Feem ntau cov tuam txhab yuav diodes thiab tom qab ntawd sib sau ua tiav rectifiers. Diotec tswj tag nrho cov voj voog ntau lawm, los ntawm kev siv lead ua rau kev sib dhos thiab ntim khoom.

Lwm lub tuam txhab thoob ntiaj teb - IRF - muaj cov thev naus laus zis tshwj xeeb los txo qhov ntev ntawm qhov chaw, txhim kho cov cua sov hloov mus, thiab ua kom cov khoom siv hluav taws xob ntau dua. Nws tsuas yog ib qho tsim cov khoom siv rau tag nrho lub zog hloov pauv lub voj voog.

Zaj lus

Lub tshuab hluav taws xob diode choj Circuit Court yog siv hauv txhua yam khoom siv hluav taws xob. Yuav tsum tau siv tag nrho-yoj rectifiers, cov yam ntxwv uas zoo dua li ib-yoj ib leeg. Koj tuaj yeem tshawb xyuas ib qho ntawm koj tus kheej los ntawm kev hu xov tooj rau txhua lub diode.