Unoziva here nezve kuderera kweMOSFETs?

Tsanangudzo uye Hunhu

DEFINITION: KuperaMOSFETimhando yakakosha yeMOSFETiyo inokwanisa kuitisa magetsi nekuti vatakuri vatovepo mugero rayo kana gedhi voltage iri zero kana mukati mechikamu chakati. Izvi zvinopesana nekuwedzeraMOSFETsizvo zvinoda imwe kukosha kwegedhi voltage kuti iite conducting channel.

Hunhu: Rudzi rwekudereraMOSFETine mabhenefiti eiyo yakakwira yekupinza impedance, yakaderera leakage ikozvino uye yakaderera switching impedance. Aya maitiro anoita kuti zvive zvakakosha kune zvakasiyana-siyana zvekushandisa mukugadzirwa kwedunhu.

Kushanda Nheyo

Nheyo yekushanda yekupedzaMOSFETsinogona kudzorwa nekuchinja gedhi voltage kudzora nhamba yevatakuri mugero uye nekudaro ikozvino. Maitiro ekushanda anogona kupfupikiswa mumatanho anotevera:

Nyika inorambidzwa: Kana gedhi regedhi riri pazasi peiyo yakakosha voltage pakati pechani uye sosi, mudziyo uri munzvimbo yakarambidzwa uye hapana ikozvino inopfuura nepakati.MOSFET.

Negative resistance state: Sezvo gedhi remagetsi richiwedzera, kubhadharisa kunotanga kuvaka muchiteshi, ichigadzira yakashata kuramba mhedzisiro. Nekugadzirisa magetsi egedhi, simba rekupikisa kwakashata rinogona kudzorwa, nokudaro kudzora ikozvino mugero.

ON STATE: Kana gedhi remagetsi richiramba richiwedzera kupfuura yakakosha voltage,iyo MOSFETinopinda mu ON state uye nhamba huru yemaerekitironi nemakomba anotakurwa kuburikidza nemugero, achigadzira yakakosha ikozvino.

Saturation: Mumamiriro ezvinhu, ikozvino muchiteshi inosvika pachiyero chekuzara, panguva iyo kuenderera mberi nekuwedzera gedhi regedhi hazvichanyanyi kuwedzera ikozvino.

Cutoff state(chinyorwa: tsananguro ye "cutoff state" pano inogona kunge yakasiyana zvishoma nemamwe mabhuku nekuti kuperaMOSFETsgara uchiita mune mamwe mamiriro ezvinhu): Mune mamwe mamiriro ezvinhu (semuenzaniso, shanduko yakanyanyisa mugedhi voltage), kuperaMOSFETinogona kupinda munzvimbo yakaderera, asi haina kugurwa zvachose.

Nzvimbo dzekushandisa

Depletion typeMOSFETsvane huwandu hwakasiyana hwekushandisa mundima dzinoverengeka nekuda kweakasarudzika maitiro ekuita:

Kutarisira simba: Inoshandisa yayo yakakwira yekupinza impedance uye yakaderera leakage ikozvino hunhu kuti uwane inoshanda shanduko yesimba mumaseketi ekutonga masimba.

Analog uye digital circuits: tamba basa rakakosha mumaseketi eanalogi uye edhijitari sekuchinja zvinhu kana kwazvino masosi.

Motor drive: Kunyatso kudzora kwemota kumhanya uye kutungamira kunoonekwa nekudzora conduction uye kucheka-kubviswa kweMOSFETs.

Inverter Circuit: Mumagetsi emagetsi ezuva uye masisitimu ekutaurirana neredhiyo, sechimwe chezvinhu zvakakosha zveiyo inverter, kuona shanduko yeDC kuita AC.

Voltage regulator: Nekugadzirisa saizi yemagetsi ekubuda, inoona yakagadzikana kubuda kwevolti uye inovimbisa basa rakajairwa remidziyo yemagetsi.

caveat

Mumashandisirwo anoshanda, zvinodikanwa kusarudza kuderera kwakakodzeraMOSFETmodhi uye parameter zvinoenderana nezvinodiwa chaizvo.

Sezvo depletion mhandoMOSFETsshanda zvakasiyana nemhando yekusimudziraMOSFETs, ivo vanoda kutariswa kwakakosha mukugadzirwa kwedunhu uye optimization.

Muchidimbu, depletion typeMOSFET, sechinhu chakakosha chemagetsi, ine tarisiro yakawanda yekushandiswa mumunda wemagetsi. Nekuenderera mberi kwekuenderera mberi kwesainzi uye tekinoroji uye kuwedzera kwekudiwa kwekushandisa, kuita kwayo uye chiyero chekushandisa zvicharamba zvichiwedzera nekuvandudza.