Kumvetsetsa ntchito ndi kapangidwe ka MOSFETs

Ngati transistor angatchedwe chopangidwa chachikulu kwambiri cha m'zaka za zana la 20, ndiye kuti palibe kukayika kutiMOSFET momwe ngongole zambiri. 1925, pa mfundo zoyambira za ma patent a MOSFET omwe adasindikizidwa mu 1959, Bell Labs adapanga mfundo ya MOSFET potengera kapangidwe kake. Mpaka lero, zosintha zazikulu zosinthira mphamvu, zazing'ono kukumbukira, CPU ndi zida zina zapakompyuta, palibe chomwe sichigwiritsa ntchito ku MOSFET. ndiye kenako timamvetsetsa ntchito ya kapangidwe ka MOSFET! Dzina lathunthu la MOSFET ndi Metal-Oxide-Semiconductor Field-Effect Transistor.

1. Ntchito zoyambira za MOSFETs

Mawu ofunika kwambiri okhudza MOSFET ndi - semiconductor, ndi semiconductor ndi mtundu wazitsulo zachitsulo, zimatha kuyendetsa magetsi, koma kwenikweni, zikhoza kukhala insulated.MOSFET ngati chipangizo cha semiconductor, timafunikira kuti tizindikire ntchito yosavuta. makamaka kuti athe kuonetsetsa kuti kuzungulira kwa dera, komanso kutha kuzindikira kuzungulira kwa kutsekereza.

2. Mapangidwe oyambira a MOSFET

MOSFET ndi chipangizo champhamvu chosunthika kwambiri chifukwa cha mphamvu yake yotsika pachipata, liwiro labwino kwambiri losinthira komanso magwiridwe antchito amphamvu ofanana. Ma MOSFET ambiri amphamvu amakhala ndi mawonekedwe oyimirira, okhala ndi magwero ndi kukhetsa mu ndege zopingasa, zomwe zimalola kuti mafunde akulu aziyenda komanso ma voltages apamwamba kuti agwiritsidwe.

3. Ma MOSFET amagwiritsidwa ntchito makamaka ngati zida zamagetsi zodziwika bwino m'magawo awiri

(1), zofunika za pafupipafupi opaleshoni pakati 10kHz ndi 70kHz, pamene mphamvu linanena bungwe kukhala zosakwana 5kw m'munda, mu ambiri milandu m'munda, ngakhale IGBT ndi mphamvu.Zithunzi za MOSFET amatha kukwaniritsa ntchito yofananira, koma mphamvu za MOSFET zimakonda kudalira zotayika zotsika, kukula kocheperako komanso mtengo wotsika mtengo kuti ukhale chisankho choyenera, ntchito zoyimira ndi matabwa a LCD TV, ophika olowetsa ndi zina zotero.

(2), zofunikira za ma frequency opangira ndi apamwamba kuposa ma frequency apamwamba kwambiri omwe amatha kukwaniritsidwa ndi zida zina zamagetsi, ma frequency apakatikati omwe ali ndi 70kHz kapena apo, mdera lino mphamvuMOSFET chakhala chisankho chokha, ntchito zoyimira ndi ma inverters, zida zomvera, ndi zina zotero.