Ni ukubera iki buri gihe bigoye kugerageza imbaraga nyinshi MOSFET ikoreshwa no kuyisimbuza na multimeter?

Kubijyanye nimbaraga nyinshi MOSFET yabaye umwe mubashakashatsi bashishikajwe no kuganira kuriyi ngingo, nuko twateguye ubumenyi busanzwe kandi budasanzwe bwaBYINSHI, Nizeye gufasha injeniyeri. Reka tuvuge kuri MOSFET, ikintu cyingenzi cyane!

Kurinda anti-static

MOSFET ifite imbaraga nyinshi ni irembo ryikingira ryumurima, irembo ntabwo ari umuzunguruko utaziguye, inzitizi yinjira ni ndende cyane, biroroshye cyane gutera igiteranyo cyamafaranga yishyurwa, bikavamo voltage nini izaba irembo nisoko ya urwego rukingira hagati yo gusenyuka.

Ibyinshi mubikorwa byambere bya MOSFETs ntabwo bifite ingamba zo kurwanya static, bityo rero witondere cyane muburinzi no kubishyira mubikorwa, cyane cyane ingufu ntoya MOSFETs, kubera imbaraga nkeya ubushobozi bwa MOSFET bwinjiza ni buto, iyo uhuye namashanyarazi ahamye bitanga a voltage nini, byoroshye biterwa no gusenyuka kwa electrostatike.

Iterambere rya vuba ryimbaraga nyinshi MOSFET ni itandukaniro rinini cyane, mbere ya byose, bitewe numurimo wubushobozi bunini bwo kwinjiza nabwo ni bunini, kuburyo guhuza amashanyarazi ahamye bifite uburyo bwo kwishyuza, bikavamo voltage ntoya, bigatera gusenyuka by'ibishoboka bito, hanyuma na none, ubu imbaraga nyinshi MOSFET mumarembo yimbere nisoko y irembo nisoko yumugenzuzi urinzwe DZ, static yashyizwe muburinzi bwa diode voltage igenzura agaciro Hasi, kurinda neza irembo ninkomoko yicyuma gikingira, imbaraga zitandukanye, moderi zitandukanye zo kurinda MOSFET kurinda diode voltage igenzura agaciro kiratandukanye.

Nubwo ingamba zikomeye zo gukingira MOSFET zo kurinda imbere, tugomba gukora dukurikije uburyo bwo kurwanya anti-static, abakozi babishoboye bagomba kugira.

Kumenya no gusimburwa

Mugusana televiziyo nibikoresho byamashanyarazi, bizahura nibintu bitandukanye byangiritse,BYINSHInayo muribo, nuburyo abakozi bacu bo kubungabunga kugirango bakoreshe multimeter isanzwe ikoreshwa kugirango bamenye ibyiza nibibi, ibyiza nibibi MOSFET. Mugusimbuza MOSFET niba ntamushinga umwe nicyitegererezo kimwe, uburyo bwo gusimbuza ikibazo.

1, imbaraga nyinshi MOSFET ikizamini:

Nkabakozi rusange basana amashanyarazi ya tereviziyo mugupima tristoriste ya kirisiti cyangwa diode, mubisanzwe ukoresha multimeter isanzwe kugirango umenye transistor nziza cyangwa mbi, nubwo urubanza rwa transistor cyangwa diode ibipimo byamashanyarazi bidashobora kwemezwa, ariko mugihe cyose uburyo nukuri bwo kwemeza tristoriste "nziza" na "mbi" cyangwa "mbi" kugirango hemezwe tristoriste. "Ikibi" cyangwa ntakibazo. Muri ubwo buryo, MOSFET nayo irashobora

Gukoresha multimeter kugirango umenye "ibyiza" na "bibi", uhereye kubisanzwe muri rusange, birashobora kandi guhaza ibikenewe.

Kumenya bigomba gukoresha ubwoko bwerekana icyerekezo (metero ya digitale ntabwo ibereye gupima ibikoresho bya semiconductor). Kumashanyarazi yo mu bwoko bwa MOSFET yo guhinduranya ni N-kuzamura imiyoboro, ibicuruzwa byabayikora hafi ya bose bakoresha ifomu imwe ya TO-220F (bivuga amashanyarazi yo guhinduranya ingufu za 50-200W yumuriro wo guhinduranya umurima) , gahunda eshatu za electrode nazo zirahoraho, ni ukuvuga eshatu

Ibipapuro hasi, icapiro ryerekana imbere yumuntu, pin ibumoso kumuryango, pin iburyo bwibizamini kumasoko, pin yo hagati kumazi.

(1) metero nyinshi nimyiteguro ijyanye nayo:

Mbere ya byose, mbere yo gupima igomba kuba ishobora gukoresha multimeter, cyane cyane ikoreshwa rya gare ya ohm, kugirango wumve blok ya ohm bizaba uburyo bwiza bwo guhagarika ohm kugirango bapime tristoriste kandiBYINSHI.

Hamwe na multimeter ya ohm guhagarika ohm centre ntishobora kuba nini cyane, nibyiza munsi ya 12 Ω (imbonerahamwe yubwoko 500 kuri 12 Ω), kugirango mumwanya wa R × 1 hashobora kugira umuyoboro munini, kuri PN ihuza imbere. ibiranga urubanza birasobanutse neza. Multimeter R × 10K ihagarika bateri yimbere iruta 9V, kuburyo mugupima ihuriro rya PN ihindagurika ryimyuka ihindagurika neza, naho ubundi ntishobora gupimwa.

Noneho kubera iterambere ryibikorwa byumusaruro, gusuzuma uruganda, kugerageza birakomeye cyane, muri rusange turacira urubanza mugihe urubanza rwa MOSFET rudasohoka, ntirucike mumuzingo mugufi, imbere ntiruzunguruka, rushobora kuba byongerewe munzira, uburyo buroroshye cyane:

Ukoresheje multimeter R × 10K guhagarika; R × 10K guhagarika bateri yimbere muri rusange ni 9V wongeyeho 1.5V kugeza 10.5V iyi voltage isanzwe ifatwa nkibihagije bya PN ihuza ihindagurika, ikaramu itukura ya multimeter ishobora kuba mbi (ihujwe na terefone mbi ya bateri yimbere), ikaramu yumukara ya multimeter ishoboka nziza (ihujwe na terefone nziza ya bateri y'imbere).

(2) Uburyo bwo gukora ibizamini:

Huza ikaramu itukura ku isoko ya MOSFET S; huza ikaramu yumukara kumuyoboro wa MOSFET D. Muri iki gihe, kwerekana inshinge bigomba kuba bitagira iherezo. Niba hari indangagaciro ya ohmic, yerekana ko umuyoboro uri kugeragezwa ufite ibintu bitemba, uyu muyoboro ntushobora gukoreshwa.

Komeza leta yavuzwe haruguru; muri iki gihe hamwe na 100K ~ 200K résistor ihuza irembo n'amazi; muri iki gihe urushinge rugomba kwerekana umubare wa ohm ntoya ntoya, muri rusange irashobora kwerekanwa kuri 0 oms, iki gihe nigiciro cyiza binyuze mumurwanya wa 100K kumurwango wa MOSFET yishyuza, bikavamo umurima wamashanyarazi w irembo, kubera umurima w'amashanyarazi wakozwe numuyoboro uyobora bikavamo imiyoboro y'amazi n'amasoko, bityo rero inshinge nyinshi za inshinge, guhindagurika ni nini (indangagaciro ya Ohm ni nto) kugirango yerekane ko imikorere isohoka ari nziza.

Hanyuma hanyuma uhujwe na résistoriste yakuweho, noneho icyerekezo cya multimeter kigomba kuba MOSFET kumurongo ntigihinduka. Nubwo résistoriste yakuramo, ariko kubera ko résistoriste ku irembo ryishyuzwa ridashobora gucika, umurima wamashanyarazi w irembo ukomeje kubungabunga umuyoboro wimbere wimbere uracyakomeza, ibyo bikaba aribyo biranga ubwoko bw irembo ryitwa MOSFET.

Niba résistoriste yo gukuramo urushinge izagenda gahoro gahoro kandi isubire inyuma cyane, cyangwa isubire iherezo, kugirango urebe ko irembo ryapimwe ryapimye.

Muri iki gihe hamwe ninsinga, ihujwe n irembo nisoko yigituba kiri kugeragezwa, icyerekezo cya multimeter cyahise gisubira ubuziraherezo. Guhuza insinga kuburyo MOSFET yapimwe, kurekura amarembo, umurima w'amashanyarazi w'imbere urazimira; umuyoboro uyobora nawo urazimira, bityo imiyoboro nisoko hagati yo kurwanya no guhinduka bitagira iherezo.

2, imbaraga nyinshi zo gusimbuza MOSFET

Mu gusana televiziyo nubwoko bwose bwibikoresho byamashanyarazi, guhura nibyangiritse bigomba gusimburwa nubwoko bumwe bwibigize. Nyamara, rimwe na rimwe ibice bimwe ntabwo biri ku ntoki, birakenewe gukoresha ubundi bwoko bwo gusimbuza, kugirango rero tugomba kuzirikana ibintu byose byimikorere, ibipimo, ibipimo, nibindi, nka tereviziyo imbere yumurongo usohoka, nkuko igihe cyose harebwa voltage, ikigezweho, imbaraga zishobora gusimburwa muri rusange (umurongo usohora umuyoboro hafi yuburinganire bumwe), kandi imbaraga zikunda kuba nini kandi nziza.

Kubasimbuye MOSFET, nubwo nayo iri hame, nibyiza prototype nziza, byumwihariko, ntukurikirane imbaraga zo kuba nini, kuko imbaraga nini; ubushobozi bwinjiza ni bunini, bwahinduwe kandi imiyoboro ishimishije ntago ihuye nibyishimo byumuriro ugabanya imipaka irwanya imiyoboro yo kuhira ingano yubunini bwagaciro kangana kandi ubushobozi bwo kwinjiza MOSFET bujyanye no gutoranya imbaraga nini nubwo ubushobozi bwa bunini, ariko ubushobozi bwo kwinjiza nabwo ni bunini, kandi ubushobozi bwo kwinjiza nabwo ni bunini, kandi imbaraga ntabwo ari nini.

Ubushobozi bwinjiza nabwo ni bunini, umuzunguruko wo kwishima ntabwo ari mwiza, nawo uzatuma MOSFET ikora no hanze imikorere mibi. Erekana gusimbuza moderi zitandukanye za MOSFETs, urebye ubushobozi bwinjiza bwiyi parameter.

Kurugero, hari 42-cm ya LCD TV yamatara yangiritse yumuriro mwinshi, nyuma yo kugenzura ibyangiritse byimbere MOSFET yangiritse, kuko nta numero prototype yo gusimbuza, guhitamo voltage, amashanyarazi, ingufu ntabwo ari munsi umwimerere wa MOSFET usimbuye, ibisubizo ni itara ryinyuma risa nkaho rikomeza guhindagurika (ingorane zo gutangira), hanyuma risimburwa nubwoko bumwe bwumwimerere kugirango ikibazo gikemuke.

Byagaragaye ko byangiritse kuri MOSFET ifite ingufu nyinshi, gusimbuza ibice byayo bya periferique yumuzunguruko wa parufe na byo bigomba gusimburwa, kubera ko ibyangiritse kuri MOSFET bishobora no kuba ibice bitangiza imashanyarazi biterwa no kwangirika kwa MOSFET. Nubwo MOSFET ubwayo yangiritse, mugihe MOSFET ivunitse, ibice byumuzunguruko wa parufe nabyo byangiritse kandi bigomba gusimburwa.

Nkuko dufite abahanga benshi basana ubwenge mugusana amashanyarazi A3 ahindura amashanyarazi; mugihe cyose umuyoboro uhinduranya wasangaga usenyuka, ni nabwo imbere yigituba cya 2SC3807 hamwe no gusimbuza impamvu imwe (nubwo umuyoboro wa 2SC3807, upimye hamwe na multimeter nibyiza).