Arun
Last Activity: 6 Years ago
In short, threshold voltage(cut off voltage) is a specific form of a potential barrier. Letssayp∮aisatapotentialVaandp∮bisisatapotentialVb,whereVb>Va.ThenthepotentialˉrierbetweenthemisVb-Va.Thresholdvo<a≥ismorespecificallyused∈caseofadiodeoratransis→r.Thegatebias(∈caseofaMOSFET)orforwardbias(∈caseofaPNjunctiondiode)required→overcomeacerta∈potentialˉrier→turnONthedevice.However,∈therecentshortcha∩eldevices,tu∩el∈gcanourbeforeyoureachthethresholdvo<a≥.T^s altogether a different issue, though.