Lub sijhawm tig tawm ntawm lub diode yog dab tsi?

Lub sijhawm tig tawm ntawm lub diode yog dab tsi?

Thaum peb tham txog qhov zaus teb ntawm diodes, ib qho tseem ceeb parameter yog lub sijhawm tig tawm. Lub sijhawm tig tawm yog hais txog lub sijhawm nws siv rau lub diode rau kev hloov pauv ntawm kev ua tam sim no mus rau lub xeev uas tsis yog-conductive. Lub sijhawm no yog qhov tseem ceeb rau cov kws tsim hluav taws xob tsim hluav taws xob vim nws txiav txim siab ua haujlwm siab tshaj plaws ntawm cov diodes siv hauv kev tsim hluav taws xob.

Lub sijhawm tig tawm yog nyob ntawm lub cev lub zog ntawm lub diode, nrog rau qhov dav bandgap ntawm cov khoom thiab cov qauv diode. Lub bandgap dav ntawm cov ntaub ntawv semiconductor txhais qhov tsawg kawg nkaus sib txawv ntawm electron zog txo. Thaum lub diode nres tsis ua haujlwm, cov neeg nqa khoom hauv cheeb tsam txwv tsis pub raug tshem tawm, thiab cov nqi hluav taws xob uas tseem tshuav ua rau qhov rov qab hluav taws xob hauv lub diode. Lub sij hawm kaw yog lub sij hawm thaum hluav taws xob teb maj mam txo mus rau xoom.

Lub sijhawm tig tawm tuaj yeem sib txawv ntawm cov diodes sib txawv. Feem ntau hais lus, lub sijhawm tig tawm ntawm Schottky diodes yog luv luv, thaum lub sijhawm tig tawm ntawm Zener diodes kuj ntev. Lub sijhawm luv luv ntawm Schottky diodes yog vim muaj cov khoom tshwj xeeb ntawm lawv cov qauv thiab cov ntaub ntawv, uas ua rau lawv hloov tau sai heev los ntawm lub xeev conductive mus rau lub xeev ib txwm muaj.

Kev nkag siab thiab xav txog lub sijhawm tig tawm yog qhov tseem ceeb rau kev ua tiav qhov kev ua tau zoo hauv kev tsim hluav taws xob. Yog tias peb xav tau circuits uas ua haujlwm nyob rau hauv ntau zaus, peb feem ntau xaiv Schottky diodes nrog lub sijhawm luv luv. Ntawm qhov tsis sib xws, rau lub voj voog qis, lub sijhawm hysteresis tsis tseem ceeb, yog li Zener diodes tuaj yeem siv.

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