Ihame ryo gusimbuza BYINSHI nicyemezo cyiza kandi kibi

1, urubanza rwujuje ubuziranengeBYINSHIibyiza cyangwa bibi

Ihame ryo gusimbuza MOSFET hamwe nubushishozi bwiza cyangwa bubi, banza ukoreshe multimeter R × 10kΩ (yubatswe muri bateri 9V cyangwa 15V), ikaramu mbi (umukara) ihujwe n irembo (G), ikaramu nziza (umutuku) ihujwe na isoko (S). Iyo kwishyuza hagati y irembo nisoko, icyerekezo cya multimeter kizahinduka gato. Ubundi ukoresheje multimeter R × 1Ω guhagarika, ikaramu itari nziza kumazi (D), ikaramu nziza kumasoko (S), multimeter yerekana agaciro ka ohm nkeya, byerekana ko MOSFET ari nziza.

 

2, isesengura ryujuje ubuziranenge MOSFET electrode

Multimeter izahamagarwa kuri dosiye ya R × 100, ikaramu itukura kumurongo umwe wamaguru, ikaramu yumukara kurindi, kuburyo ikirenge cya gatatu gihagarikwa. Niba ubonye urushinge ruto rwa metero, garagaza ko ikirenge cya gatatu ari irembo. Niba ushaka kubona ibisubizo bigaragara, urashobora kandi gukoresha umubiri hafi cyangwa urutoki kugirango ukore ikirenge cyahagaritswe, mugihe cyose ubonye urushinge rwahindutse kuburyo bugaragara, ni ukuvuga, byerekana ko ikirenge cyahagaritswe kumuryango, the hasigaye ibirenge bibiri kubisoko no gutemba, kimwe.

Impamvu zivangura:JFETkwinjiza kwinjiza birenze 100MΩ, kandi transconductance ni ndende cyane, iyo irembo rifunguye-umuzenguruko, umurima wa electromagnetic yumwanya urashobora guterwa byoroshye na signal ya voltage yumuryango, kuburyo umuyoboro ukunda guca, cyangwa ukunda gutwarwa. Niba umubiri wumuntu ugana kuri voltage induction, kubera ibimenyetso byinjira byinjira birakomeye, ibintu byavuzwe haruguru bizagaragara cyane. Kurugero, urushinge rwibumoso rubogamye ni runini cyane, bivuze ko umuyoboro ukunda guca, kurwanya-inkomoko yo kurwanya RDS iriyongera, imiyoboro-yamashanyarazi igabanya IDS. muburyo bunyuranye, inshinge kuruhande rwiburyo bwa deflection nini, ko umuyoboro ukunda kugenda, RDS ↓, IDS ↑. Nyamara, icyerekezo urushinge rwa metero runyuramo rugomba kugenwa na polarite ya voltage yatewe (imbere cyangwa ihindagurika ryumubyigano) hamwe nigikorwa cyumuyoboro.
Icyitonderwa:

Ibisubizo by'ibizamini byerekana ko iyo amaboko yombi yiziritse ku nkingi ya D na S kandi irembo ryakozweho gusa, urushinge rwa metero rusanzwe rwerekeza ibumoso. Ariko, iyo amaboko yombi akora ku nkingi ya D na S hanyuma intoki zigakora ku irembo, urushinge rwa metero rushobora kugaragara kugirango ruhindukire iburyo. Impamvu yabyo nuko ibice byinshi byumubiri wumuntu no kurwanya kubogama theBYINSHImukarere.

 

 

 

Crystal triode pin kwiyemeza

Triode igizwe ningingo (ebyiri za PN zihuza), electrode eshatu nigikonoshwa, electrode eshatu zitwa kolitori c, emitter e, base b. Kugeza ubu, triode isanzwe ni silicon planar tube, igabanijwemo ibyiciro bibiri: ubwoko bwa PNP na NPN. Imiyoboro ya Germananium alloy ubu ni gake.

Hano tuzatangiza uburyo bworoshye bwo gukoresha multimeter yo gupima ibirenge bya triode ya triode.

 

1, shakisha inkingi fatizo, menya ubwoko bwa tube (NPN cyangwa PNP)

Kuri PNP yo mu bwoko bwa triode, C na E inkingi nizo nkingi nziza zihuza PN zombi imbere yacyo, naho B pole ni pole isanzwe isanzwe, mugihe ubwoko bwa NPN butatu butandukanye, C na E inkingi nizo nkingi mbi. mu masangano abiri ya PN, na B pole ni pole isanzwe ihuriweho, kandi biroroshye kumenya inkingi fatizo nubwoko bwigituba ukurikije ibiranga ihuriro ryiza rya PN ni rito, kandi kurwanya kwinshi ni binini . Uburyo bwihariye ni:

Koresha multimeter yahamagaye kuri R × 100 cyangwa R × 1K ibikoresho. Ikaramu itukura ikora kuri pin, hanyuma ukoreshe ikaramu yumukara yahujwe nandi mabati abiri, kugirango ubashe kubona amatsinda atatu (buri tsinda ryibiri) gusoma, mugihe kimwe mubice bibiri byasomwe kiri mumwanya muto wo kurwanya amajana make oms, niba pin rusange ari ikaramu itukura, ihuriro niryo shingiro, ubwoko bwa transistor bwubwoko bwa PNP; niba pin rusange ari ikaramu yumukara, ihuriro niryo shingiro, ubwoko bwa transistor bwubwoko bwa NPN.

 

2, menya uwasohoye hamwe nuwakusanyije

Nkumusaruro wa triode, agace ka P cyangwa bibiri N mubice bya doping biratandukanye, niba amplifier iburyo, triode ifite amplification ikomeye, naho ubundi, hamwe na amplifier itari yo, amplifier amplification yumubare munini wintege nke cyane , rero triode hamwe na amplifier iburyo, triode hamwe na amplifier itari yo, hazabaho itandukaniro rinini.

 

Nyuma yo kumenya ubwoko bwa tube na base b, uwakusanyije hamwe na emitter irashobora kumenyekana muburyo bukurikira. Hamagara kuri multimeter ukanda R x 1K. Shyira shingiro hamwe nizindi pin hamwe namaboko yombi (witondere kutareka electrode ikaza guhura). Kugirango ugaragaze ibintu byo gupimwa bigaragara, oza intoki zawe, shyira ikaramu itukura hamwe nifatizo, shyira ikaramu yumukara hamwe nindi pin, hanyuma witondere ubunini bwikigero cyiburyo cyerekana icyerekezo. Ibikurikira, hindura ibice bibiri, subiramo intambwe yo gupima hejuru. Gereranya amplitude y'urushinge ruzunguruka mubipimo byombi hanyuma umenye igice hamwe na swing nini. Kuri tristoriste yo mu bwoko bwa PNP, huza ikaramu yumukara kuri pin na pin base base hamwe, subiramo ubushakashatsi bwavuzwe haruguru kugirango umenye aho urushinge rwa swing amplitude ari nini, kubwoko bwa NPN, ikaramu yumukara ihujwe na base, umutuku ikaramu ihujwe na emitter. Ubwoko bwa PNP, ikaramu itukura ihujwe nuwakusanyije, ikaramu yumukara ihujwe na emitter.

 

Ihame ryubu buryo bwo kumenyekanisha ni ugukoresha bateri muri multimeter, voltage yongeweho mukusanya hamwe no gusohora transistor, kugirango igire ubushobozi bwo kongera imbaraga. Ukuboko gukubitisha intoki, gukusanya, bingana no guhangana unyuze mu kuboko kugera kuri triode hiyongereyeho icyerekezo cyiza kibogamye, ku buryo ikora, muri iki gihe ubunini bw'urushinge rwa metero ruzunguruka iburyo bugaragaza ubushobozi bwarwo bwo kongera imbaraga, bityo urashobora neza menya aho emitter, ikusanya.