Question
Download Solution PDFDiffusion capacitance of a p-n junction diode increases with increase in the ________ and the ________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct option is 4
Concept:
Diffusion Capacitance:
It is dominant when the diode is forward and is the result of storage charges when forward-biased.
The diffusion capacitance is given by the formula:
\({C_d} = \frac{{{I}\times\tau }}{{2{V_T}}}\) ---(1)
IDQ = Diode Current
τ = Minority carrier lifetime
VT = Thermal voltage
From equation(1) we may conclude that the diffusion capacitance of a p-n junction diode increases with an increase in the mean lifetime of minority carriers & the diode current.
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