Ma pini atatu a MOSFET, ndingawalekanitse bwanji?

I. Chizindikiritso cha Pini

Chipata (G):Kawirikawiri amalembedwa kuti "G" kapena amatha kudziwika mwa kuyeza kukana kwa zikhomo zina ziwiri, popeza chipatacho chimakhala ndi cholepheretsa kwambiri mu dziko lopanda mphamvu ndipo sichigwirizana kwambiri ndi zikhomo zina ziwiri.

Gwero (S):Nthawi zambiri imatchedwa "S" kapena "S2", ndi pini yolowera pano ndipo nthawi zambiri imalumikizidwa ndi terminal yoyipa ya MOSFET.

Kukhetsa (D):Nthawi zambiri imatchedwa "D", ndi pini yapano ndipo imalumikizidwa ku terminal yabwino ya dera lakunja.

II. Pin Ntchito

Chipata (G):Ndilo pini yofunikira yomwe imayang'anira kusintha kwa MOSFET, poyang'anira voteji pachipata kuti ayang'anire ndi kutuluka kwa MOSFET. M'malo opanda mphamvu, kutsekeka kwa chipata nthawi zambiri kumakhala kokwera kwambiri, popanda kulumikizana kwakukulu ndi zikhomo zina ziwiri.

Gwero (S):ndi pini yolowera pano ndipo nthawi zambiri imalumikizidwa ku terminal yoyipa ya MOSFET. Mu NMOS, gwero nthawi zambiri limakhazikitsidwa (GND); mu PMOS, gwero likhoza kulumikizidwa ndi zabwino (VCC).

Kukhetsa (D):Ndi pini yotuluka pano ndipo imalumikizidwa ku terminal yabwino ya dera lakunja. Mu NMOS, kukhetsa kumalumikizidwa ndi zabwino (VCC) kapena katundu; mu PMOS, kukhetsa kumalumikizidwa ndi nthaka (GND) kapena katundu.

III. Njira zoyezera

Gwiritsani ntchito multimeter:

Khazikitsani machulukitsidwe kuti akhale malo oyenera kukana (monga R x 1k).

Gwiritsani ntchito cholumikizira choyipa cha multimeter cholumikizidwa ndi ma elekitirodi aliwonse, cholembera china kuti mulumikizane ndi mitengo iwiri yotsalayo, kuti muyese kukana kwake.

Ngati miyeso iwiri yotsutsana ndi yofanana ndi yofanana, cholembera cholakwika chokhudzana ndi chipata (G), chifukwa chipata ndi zikhomo zina ziwiri pakati pa kukana zimakhala zazikulu kwambiri.

Kenako, ma multimeter adzayitanira ku R × 1 giya, cholembera chakuda cholumikizidwa ndi gwero (S), cholembera chofiira cholumikizidwa ndi kukhetsa (D), kuchuluka kwa kukana kuyenera kukhala ma ohm angapo mpaka ma ohm angapo, kuwonetsa. kuti gwero ndi kukhetsa pakati pa zinthu zenizeni kungakhale conduction.

Yang'anani dongosolo la pin:

Kwa ma MOSFET okhala ndi ma pini odziwika bwino (monga mafomu ena a phukusi), malo ndi ntchito ya pini iliyonse zitha kuzindikirika poyang'ana chithunzi cha mapini kapena deta.

IV. Kusamalitsa

Mitundu yosiyanasiyana ya ma MOSFET imatha kukhala ndi mapini osiyanasiyana ndi zolembera, chifukwa chake ndibwino kuti mufufuze zojambulazo kapena phukusi lachitsanzocho musanagwiritse ntchito.

Mukayesa ndikulumikiza zikhomo, onetsetsani kuti mwatcheru chitetezo chamagetsi osasunthika kuti musawononge MOSFET.

Ma MOSFET ndi zida zoyendetsedwa ndi ma voliyumu zomwe zimakhala ndi liwiro losinthira mwachangu, koma pamagwiritsidwe ntchito ndikofunikirabe kuyang'anira mapangidwe ndi kukhathamiritsa kwa mayendedwe oyendetsa kuti awonetsetse kuti MOSFET ikhoza kugwira ntchito moyenera komanso modalirika.

Mwachidule, mapini atatu a MOSFET amatha kusiyanitsa molondola ndi njira zosiyanasiyana monga chizindikiritso cha pini, ntchito ya pini ndi njira zoyezera.