Lub varactor diode yog ib qho tshwj xeeb diode tsim tshwj xeeb raws li lub hauv paus ntsiab lus hais tias qhov sib txuas capacitance ntawm "PN hlws ris" hauv qhov zoo tib yam diode tuaj yeem hloov pauv nrog kev hloov pauv ntawm cov ntaub ntawv rov qab voltage.

Lub varactor diode yog tsuas yog siv nyob rau hauv high-frequency modulation Circuit Court ntawm lub xov tooj ntawm tes los yog landline nyob rau hauv lub cordless xov tooj kom paub txog cov modulation ntawm lub low-frequency teeb liab mus rau lub high-frequency teeb liab thiab emit nws. Nyob rau hauv lub xeev ua hauj lwm, lub varactor diode modulation voltage feem ntau yog ntxiv rau qhov tsis zoo electrode Ua rau lub sab hauv capacitance ntawm varactor diode hloov nrog lub modulation voltage.

Lub varactor diode tsis ua haujlwm, feem ntau tshwm sim raws li kev xau lossis kev ua haujlwm tsis zoo:

(1) Thaum cov dej xau tshwm sim, qhov ntsuas hluav taws xob ntau zaus yuav tsis ua haujlwm lossis qhov kev ua haujlwm ntawm kev hloov pauv yuav tsis zoo.

(2) Thaum qhov kev ua tau zoo ntawm varactor yog qhov tsis zoo, kev ua haujlwm ntawm lub tshuab hluav taws xob ntau zaus tsis ruaj khov, thiab cov teeb liab modulated high-zaus xa mus rau lwm tus thiab tau txais kev cuam tshuam los ntawm lwm tus.

Thaum ib qho ntawm cov xwm txheej saum toj no tshwm sim, lub varactor diode ntawm tib tus qauv yuav tsum tau hloov.