Kala-duwanaanta 'varaf canis' waa diode gaar ah oo si gaar ah loogu talagalay in lagu muujiyo mabda'a ah in isgoyska uu ku nool yahay "isgoyska ee 'PN-ka' gudaha diode" ee dadaalka caadiga ah ee caadiga ah ayaa lagu beddeli karaa isbedelka korantada ee loo adeegsaday.

Kala-duwanaanta 'varaf cabir' waxaa badanaa loo isticmaalaa isbedelada sare ee isbedelka taleefanka gacanta ama khadka tooska ah ee telefoonka xargaha si loo garto isbedelka tilmaanta soo noqnoqda ee muuqata ee tilmaanta soo noqnoqda oo soosaara. Gobolka shaqada, korantada lagu beddelo ee loo yaqaan 'vathol-ka' varafta diodka 'guud ahaan lagu daro elektrode-ka xun wuxuu ka dhigayaa dammaanadaha gudaha ee ka mid ah isbadalka quwadda varakor-ka ah ee lagu beddelo modol.

Kala-guurka varaf canis ayaa ku guuldareystay, badiyaa loo muujiyaa inuu yahay daadasha ama waxqabadka liita:

(1) Markuu baxuhu dhaco, Monitation Monitation Modelaut ma shaqeyn doono ama waxqabadka Monitalka ayaa ka sii dari doona.

(2) Marka waxqabadka varaf casaro uu ka xumaaday, howlgalka Modulation Moderalation-ka Sare ee Squitable waa mid aan xasilloonayn, oo ah school-ka isdaba-joog ah ee isdaba-joogga ah waxaa loo diraa dhinaca kale oo uu helay dhalanrog koox kale.

Marka mid ka mid ah xaaladaha kor ku xusan uu dhaco, diode diode of isla qaab isku mid ah waa in la beddelaa.