Njira Zofunikira pakusankha kwa MOSFET

Masiku ano, ndi chitukuko chofulumira cha sayansi ndi ukadaulo, ma semiconductors amagwiritsidwa ntchito m'mafakitale ochulukirapo, omweMOSFET imatengedwanso wamba kwambiri semiconductor chipangizo, sitepe yotsatira ndi kumvetsa chimene kusiyana makhalidwe a bipolar mphamvu galasi transistor ndi linanena bungwe mphamvu MOSFET.

1, njira ya ntchito

MOSFET ndi ntchito yofunika kulimbikitsa voteji ntchito, madera zithunzi kufotokoza ndi yosavuta, kulimbikitsa mphamvu yaing'ono; mphamvu kristalo transistor ndi otaya mphamvu kulimbikitsa dongosolo kamangidwe n'zovuta, kulimbikitsa mfundo za kusankha zovuta kulimbikitsa specifications adzaika pangozi magetsi okwana kusintha liwiro.

2, kuthamanga kwathunthu kwa magetsi

MOSFET anakhudzidwa ndi kutentha ndi yaing'ono, magetsi kusintha linanena bungwe mphamvu akhoza kuonetsetsa kuti kuposa 150KHz; Mphamvu ya crystal transistor ili ndi nthawi yochepa yosungiramo mwaulere imachepetsa kuthamanga kwa magetsi, koma mphamvu zake zotulutsa nthawi zambiri siziposa 50KHz.

3, Malo ogwirira ntchito otetezeka

Mphamvu MOSFET alibe maziko achiwiri, ndipo malo ogwirira ntchito otetezeka ndi aakulu; Mphamvu ya crystal transistor ili ndi gawo lachiwiri, lomwe limalepheretsa malo ogwirira ntchito otetezeka.

4, kondakitala magetsi ntchito chofunika voteji

MphamvuMOSFET ndi mtundu wamagetsi okwera kwambiri, voteji yogwira ntchito ndiyokwera kwambiri, pali coefficient ya kutentha yabwino; mphamvu crystal transistor ngakhale ndalama zingati kugonjetsedwa ndi chofunika ntchito voteji ntchito, kondakitala magetsi ntchito chofunika ntchito voteji ndi otsika, ndipo ali ndi coefficient kutentha zoipa.

5, pazipita mphamvu otaya

Mphamvu MOSFET mu kusintha kwa magetsi opangira magetsi oyendetsa magetsi oyendetsa magetsi oyendetsa magetsi monga magetsi opangira magetsi, akugwira ntchito ndi ntchito yokhazikika pakati, kuthamanga kwamagetsi kumakhala kochepa; ndi mphamvu crystal transistor ntchito ndi ntchito khola pakati, pazipita mphamvu otaya ndi apamwamba.

6, Mtengo wazinthu

Mtengo wa mphamvu MOSFET ndi wapamwamba pang'ono; mtengo wa mphamvu ya crystal triode ndi yotsika pang'ono.

7, Kulowa kwenikweni

Mphamvu MOSFET ilibe mphamvu yolowera; Mphamvu ya crystal transistor ili ndi mphamvu yolowera.

8, Kusintha kutaya

MOSFET kusintha kutayika sikwabwino; mphamvu crystal transistor kusinthana kutaya ndi kwakukulu.

Kuphatikiza apo, mphamvu zambiri za MOSFET Integrated shock absorbing diode, pamene bipolar mphamvu crystal transistor pafupifupi palibe Integrated shock absorbing diode.MOSFET shock absorbing diode ingakhalenso maginito wapadziko lonse lapansi posinthira magetsi ma coil maginito kuti apereke mphamvu yamphamvu. ya njira yotetezera mphamvu yothamanga. Field effect chubu mu diode yochititsa mantha panthawi yonse yozimitsa ndi diode wamba monga kukhalapo kwa reverse kuchira panopa, pa nthawi ino diode mbali imodzi kutenga kukhetsa - gwero pole positive pakati kwambiri. kukwera kwa ntchito zofunikira zamagetsi ogwiritsira ntchito, kumbali ina, ndi kubwereranso komwe kumatuluka.