Kunezindlela ezimbili zokuhlukanisa phakathi kokuhle nokubi kwe-Mosfet.
Esokuqala: ukuhlukanisa ngokufanelekile izinga likagesi le-Mosfet
I-Multimeter izodayela ku-R × 100 gear, ipeni elibomvu elixhunywe ngokungahleliwe ku-tube yonyawo, ipeni elimnyama lixhunywe kwelinye ithubhu lezinyawo, ukuze unyawo lwesithathu lugcine isimo esimisiwe.Uma uthola inaliti has a jitter kancane, kufakazela ukuthi unyawo lwesithathu for esangweni.Uma uthola ukubonwa okusobala okwengeziwe komphumela wangempela, ungase futhi ube seduze nokudlidliza kwe-elekthronikhi noma ukuthinta umunwe okulenga ezinyaweni zomoya, ukubona kuphela ukuchezuka kwenaliti, okungukuthi, okubonisa ukuthi ukulenga ezinyaweni zomoya kuyisango, ezinye izinyawo ezimbili ziwumthombo kanye nokukhipha amanzi, ngokulandelana.
Hlukanisa isizathu: Ukumelana okokufaka kwe-JFET kungaphezu kuka-100MΩ, futhi i-transconductance iphakeme kakhulu, lapho isango liholwa, indawo yasendlini kazibuthe kulula kakhulu ukubona isignali yedatha ye-voltage esebenzayo esangweni, ukuze ipayipi lithambekele kube phezulu, noma kuvame ukuba ku-off.Uma i-voltage yokungeniswa komzimba yengezwa ngokushesha esangweni, ngoba ukuphazamiseka okubalulekile kwe-electromagnetic kunamandla, isimo esingenhla sizobaluleka kakhulu.Uma inaliti yemitha ichezuka ngokucijile iye kwesokunxele, kusho ukuthi ipayipi livame ukuba phezulu, i-RDS yokumelana nomthombo wokukhipha amanzi iyakhula, futhi inani lamanje lomthombo wokukhipha amanzi liyehlisa i-IDS.Ngokuphambene, inaliti yemitha ichezukela ngokucijile iye kwesokudla, okubonisa ukuthi ipayipi livamise ukuthi licime, i-RDS iye phansi, bese i-IDS iye phezulu.Kodwa-ke, indawo ngqo lapho inaliti yemitha ichezukiswa khona kufanele incike ezigxotsheni ezinhle nezingezinhle ze-voltage eyengelwe (i-voltage esebenza indawo eqondile noma i-voltage yokusebenza ebuyela emuva) kanye nendawo emaphakathi yokusebenza yepayipi.
Okwesibili: ukuhlukanisa ngokufanelekile izinzuzo kanye nokubi kwe-mosfet
Okokuqala sebenzisa i-multimeter R × 10kΩ block (ibhethri elishumekiwe elingu-9V noma elingu-15V), ipeni elinegethivu (elimnyama) elixhunywe esangweni (G), ipeni eliphozithivu (elibomvu) elixhunywe kumthombo (S).Esangweni, umthombo wokushaja kwebhethri emaphakathi, khona-ke inaliti ye-multimeter inokuphambuka okuncane.Bese ushintshela ku-multimeter R × 1Ω block, ipeni elibi liye ku-drain (D), ipeni elihle emthonjeni (S), inani elimakiwe le-multimeter uma i-ohm embalwa, kubonisa ukuthi i-mosfet yinhle.
Isikhathi sokuthumela: Sep-01-2023
