Vim li cas MOSFETs voltage tswj?

MOSFETs (Hloov Oxide Semiconductor Field Effect Transistors) yog hu ua hluav taws xob tswj cov khoom siv feem ntau vim tias lawv txoj haujlwm ua haujlwm tsuas yog nyob ntawm kev tswj lub rooj vag voltage (Vgs) dhau qhov ntws tam sim no (Id), es tsis yog tso siab rau tam sim no los tswj nws, xws li yog rooj plaub nrog bipolar transistors (xws li BJTs). Cov hauv qab no yog cov lus piav qhia ntxaws ntxaws ntawm MOSFET raws li cov cuab yeej tswj hluav taws xob:

Txoj Cai Ua Haujlwm

Rooj vag Voltage Control:Lub plawv ntawm MOSFET nyob rau hauv cov qauv ntawm nws lub rooj vag, qhov chaw thiab ntws, thiab ib txheej insulating (feem ntau silicon dioxide) hauv qab lub rooj vag. Thaum ib qho hluav taws xob siv rau ntawm lub rooj vag, ib qho hluav taws xob hluav taws xob tau tsim hauv qab txheej insulating, thiab daim teb no hloov cov conductivity ntawm thaj tsam ntawm qhov chaw thiab ntws.

Conductive Channel Tsim:Rau N-channel MOSFETs, thaum lub rooj vag voltage Vgs siab txaus (saum toj no tus nqi tshwj xeeb hu ua qhov pib voltage Vt), electrons nyob rau hauv P-hom substrate hauv qab lub rooj vag yog attracted rau underside ntawm insulating txheej, tsim ib tug N- hom conductive channel uas tso cai rau conductivity ntawm qhov chaw thiab ntws. Hloov pauv, yog tias Vgs qis dua Vt, qhov kev coj ua channel tsis tsim thiab MOSFET raug txiav tawm.

Tswj tam sim no:qhov loj ntawm qhov ntws tam sim no Id yog tswj los ntawm lub rooj vag voltage Vgs. Qhov siab dua Vgs, qhov dav dua qhov kev coj ua channel yog tsim, thiab qhov loj dua cov dej ntws tam sim no. Qhov kev sib raug zoo no tso cai rau MOSFET los ua lub zog tswj tam sim no.

Piezo Characterization Advantages

High Input Impedance:Lub input impedance ntawm MOSFET yog siab heev vim yog kev sib cais ntawm lub rooj vag thiab lub hauv paus-drain cheeb tsam los ntawm ib tug insulating txheej, thiab lub rooj vag tam sim no yuav luag xoom, uas ua rau nws pab tau nyob rau hauv circuits uas siab input impedance yuav tsum tau.

Tsawg suab nrov:MOSFETs tsim cov suab nrov qis thaum lub sijhawm ua haujlwm, feem ntau vim lawv cov tswv yim impedance siab thiab unipolar carrier conduction mechanism.

Fast switching ceev:Txij li thaum MOSFETs yog cov khoom siv hluav taws xob tswj hluav taws xob, lawv qhov kev hloov pauv ceev feem ntau yog sai dua li ntawm cov transistors bipolar, uas yuav tsum tau mus dhau cov txheej txheem ntawm kev them nqi cia thiab tso tawm thaum hloov.

Kev siv hluav taws xob tsawg:Nyob rau hauv lub xeev, qhov dej-qhov chaw tsis kam (RDS (on)) ntawm MOSFET yog qhov qis, uas yuav pab txo qis kev siv hluav taws xob. Tsis tas li ntawd, nyob rau hauv lub xeev txiav tawm, qhov kev siv hluav taws xob zoo li qub yog tsawg heev vim tias lub rooj vag tam sim no yuav luag xoom.

Hauv cov ntsiab lus, MOSFETs yog hu ua cov khoom siv hluav taws xob tswj hluav taws xob vim tias lawv txoj haujlwm kev ua haujlwm yog nyob ntawm kev tswj cov dej ntws tam sim no los ntawm lub rooj vag voltage. Cov yam ntxwv tswj qhov hluav taws xob no ua rau MOSFETs cog lus rau ntau yam kev siv hauv hluav taws xob hauv hluav taws xob, tshwj xeeb tshaj yog qhov muaj kev tawm tswv yim siab, tsis tshua muaj suab nrov, kev hloov ceev ceev thiab kev siv hluav taws xob tsawg.