Time taken for a diode to reach 90% of its final value when switched from steady state is______(a) 2.3*time constant(b) 2.2*time constant(c) 1.5*time constant(d) equals the time constantThis question was addressed to me in an interview.This intriguing question originated from PN Diode Switching Times topic in division Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Time taken for a diode to reach 90% of its final value when switched f

1.	Time taken for a diode to reach 90% of its final value when switched from steady state is______(a) 2.3time constant(b) 2.2time constant(c) 1.5*time constant(d) equals the time constantThis question was addressed to me in an interview.This intriguing question originated from PN Diode Switching Times topic in division Semiconductor-Diode Characteristics of Electronic Devices & Circuits
Answer» The CORRECT choice is (B) 2.2*time constant Best EXPLANATION: Time constant = RC. To REACH 90% of the final value, time taken is 2.2 of RC. Time constant is the time required to discharge the capacitor, through the resistor, by 36.8%.

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