Qhov xwm txheej ntawm daim ntawv thov mosfet

Thaum tsim ib lub zog hloov hluav taws xob lossis lub cev muaj zog tsav Circuit Court nrog amosfet, cov neeg feem coob yuav xav txog qhov kev tawm tsam ntawm mos transistor, qhov siab tshaj plaws voltage, thiab qhov siab tshaj plaws tam sim no, tab sis qhov ntawd yog txhua yam lawv yuav xav txog. Xws li ib tug Circuit Court tej zaum yuav ua hauj lwm, tab sis nws tsis yog ib tug zoo Circuit Court thiab tsis tso cai rau tsim raws li ib tug formal khoom.

Qhov tseem ceeb tshaj feature ntawmmosfetyog hloov, yog li nws tuaj yeem siv dav hauv ntau lub voj voog uas yuav tsum tau hloov hluav taws xob, xws li hloov cov khoom siv hluav taws xob thiab lub cev muaj zog tsav circuits. Niaj hnub no, mosfet daim ntawv thov Circuit Court teeb meem:

1, kev siv hluav taws xob tsawg

Thaum siv 5V fais fab mov, yog siv cov qauv totem ncej, vim tias qhov hluav taws xob poob ntawm lub transistor tsuas yog kwv yees li 0.7V, qhov tseeb voltage thaum kawg loaded ntawm lub rooj vag tsuas yog 4.3V, lub sijhawm no, yog tias peb xaiv ib mosfet nrog ib tug voltage ntawm 4.5V, tag nrho cov Circuit Court yuav muaj ib tug tej yam kev pheej hmoo. Tib qhov teeb meem yuav tshwm sim thaum siv 3V lossis lwm yam khoom siv hluav taws xob qis.

2, kev siv dav voltage

Nyob rau hauv peb lub neej txhua hnub, qhov voltage peb input tsis yog tus nqi ruaj khov, nws yuav raug cuam tshuam los ntawm lub sijhawm lossis lwm yam. Cov nyhuv no yuav ua rau pwm Circuit Court muab lub zog tsis ruaj khov heev rau cov mosfet. Yog li thiaj li tso cai rau mos transistors ua haujlwm zoo ntawm lub rooj vag siab, ntaumosfesNiaj hnub no muaj built-in voltage regulators uas txwv lub rooj vag voltage. Nyob rau ntawm lub sijhawm no, thaum cov khoom siv tsav hluav taws xob ntau tshaj qhov hluav taws xob ntawm tus tswj hwm, qhov tseem ceeb ntawm kev siv hluav taws xob zoo li qub tshwm sim. Nyob rau tib lub sijhawm, yog tias lub rooj vag hluav taws xob tsuas yog txo qis siv lub ntsiab lus ntawm qhov hluav taws xob resistor, qhov hluav taws xob input yuav siab heev thiab mosfet yuav ua haujlwm zoo. Thaum lub input voltage txo, lub rooj vag voltage tsis txaus, ua rau tsis tiav conduction thiab muaj zog noj.