Duba transistor: an bayyana mataki -mataki

Saukewa: IRFZ44N

Wani lokaci da suka gabata mun buga koyawa kan yadda zaku iya duba capacitors. Yanzu juzu'in wani ne bangaren lantarki mai mahimmanci, yaya wannan. A nan za ku ga yadda duba transistor an yi bayani sosai a sauƙaƙe kuma mataki -mataki, kuma kuna iya yin shi da kayan aiki azaman na al'ada azaman multimeter.

da Ana amfani da transistors sosai a cikin tarin da'irar lantarki da lantarki don sarrafawa tare da wannan na'urar mai ƙarfi. Don haka, gwargwadon yawan su, tabbas za ku ci karo da lamuran da dole ne ku bincika su ...

Me ake bukata?

yadda za a zabi multimeter, yadda ake amfani da shi

Idan kun riga kun samu mai kyau multimeter, ko multimeter, shine kawai abin da kuke buƙata don gwada transistor ɗin ku. Haka ne, wannan Multimeter Dole ne ya sami aiki don gwada transistors. Yawancin multimeter na dijital na yau suna da wannan fasalin, har ma da rahusa. Tare da shi zaku iya auna NPN ko PNP bipolar transistors don sanin ko suna da lahani.

Idan wannan shine lamarin ku, kawai za ku saka fil uku na transistor a cikin soket na multimeter wanda aka nuna masa, kuma sanya mai zaɓin akan Matsayin hFE don auna riba. Don haka zaku iya samun karatu kuma ku duba bayanan bayanan idan yayi daidai da abin da yakamata ya bayar.

Matakan da za a duba transistor na bipolar

yadda za a zabi multimeter

Abin baƙin ciki, ba duk multimeter ke da wannan sifa mai sauƙi ba, kuma zuwa gwada shi ta hanyar da hannu tare da kowane multimeter dole ne ku yi shi daban, tare da aikin gwajin «Diode».

  1. Abu na farko shine cire transistor daga da'irar don samun ingantaccen karatu. Idan ba a riga an siyar da shi ba, zaka iya ajiye wannan matakin.
  2. Gwaji Tushen zuwa Mai Bayarwa:
    1. Haɗa madaidaicin (ja) jagoran multimeter zuwa tushe (B) na transistor, da kuma mummunan (baƙar fata) zuwa ga emitter (E) na transistor.
    2. Idan transistor na NPN yana cikin yanayi mai kyau, yakamata mita ya nuna raguwar wutar lantarki tsakanin 0.45V zuwa 0.9V.
    3. Idan ya kasance PNP, ya kamata a ga farkon harafin OL (Over Limit) akan allon.
  3. Gwaji Tushe zuwa Mai tarawa:
    1. Haɗa madaidaicin jagora daga multimeter zuwa tushe (B), da mummunan jagora ga mai tara (C) na transistor.
    2. Idan NPN tana cikin yanayi mai kyau, zai nuna raguwar ƙarfin lantarki tsakanin 0.45v zuwa 0.9V.
    3. Idan ya kasance PNP, to OL zai sake bayyana.
  4. Gwaji Mai Bayarwa zuwa Ƙasa:
    1. Haɗa waya mai kyau zuwa emitter (E) da mara waya mara kyau zuwa tushe (B).
    2. Idan NPN ce cikin cikakkiyar yanayin zai nuna OL a wannan karon.
    3. Dangane da PNP, za a nuna digo na 0.45v da 0.9V.
  5. Gwaji Mai tarawa zuwa Ƙasa:
    1. Haɗa madaidaicin multimeter ga mai tara (C) da mara kyau zuwa tushe (B) na transistor.
    2. Idan NPN ce, yakamata ta bayyana akan allon OL don nuna cewa ba komai.
    3. Idan akwai PNP, digon ya sake zama 0.45V da 0.9V idan yayi kyau.
  6. Gwaji Mai tarawa zuwa Emitter:
    1. Haɗa jan waya zuwa mai tara (C) da baƙar fata zuwa emitter (E).
    2. Ko NPN ne ko PNP cikin cikakkiyar yanayin, zai nuna OL akan allon.
    3. Idan kun juya wayoyi, tabbatacce a emitter da mara kyau a mai tarawa, duka a PNP da NPN, shima yakamata ya karanta OL.

Duk wani daban -daban ma'auni na wannan, idan an yi shi daidai, zai nuna cewa transistor ɗin ba kyau. Hakanan dole ne kuyi la’akari da wani abu daban, kuma shine cewa waɗannan gwaje -gwajen kawai suna gano idan transistor ɗin yana da ɗan gajeren zango ko a buɗe suke, amma ba wasu matsaloli ba. Sabili da haka, koda ta wuce su, transistor na iya samun wata matsala da ke hana yin aiki daidai.

FET transistor

A yanayin zama FET transistor, kuma ba mai bipolar ba, to yakamata ku bi waɗannan sauran matakan tare da multimeter na dijital ko analog:

  1. Sanya multimeter ɗin ku a cikin aikin gwajin diode, kamar da. Sannan sanya baƙar fata (-) bincike akan tashar Drain, da jan (+) bincike akan tashar Source. Sakamakon yakamata ya zama karatun 513mv ko makamancin haka, dangane da nau'in FET. Idan ba a samu karatun ba, za a buɗe kuma idan ya yi ƙasa sosai za a takaita shi.
  2. Ba tare da cire alamar baƙar fata daga magudanar ruwa ba, sanya jan jan a kan tashar ƙofar. Yanzu gwajin bai kamata ya dawo da kowane karatu ba. Idan yana nuna kowane sakamako akan allon, to za a sami zube ko gajeriyar da'ira.
  3. Saka tip a cikin marmaro, kuma baƙar fata zai kasance a cikin magudanar ruwa. Wannan zai gwada mahaɗin Maɓallin Maɓalli ta hanyar kunna shi da samun ƙaramin karatun kusan 0.82v. Don kashe na’urar transistor, tashoshi uku (DGS) dole ne a takaice su, kuma za su dawo daga jihar zuwa yanayin zaman banza.

Tare da wannan, zaku iya gwada transistors irin FET, kamar MOSFETs. Ka tuna samun halayen fasaha ko bayanai daga cikin waɗannan don sanin ko ƙimar da kuka samu sun isa, tunda ya bambanta gwargwadon nau'in transistor ...


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