GATE Questions & Answers of Zener Diode

What is the Weightage of Zener Diode in GATE Exam?

Total 3 Questions have been asked from Zener Diode topic of Electronic Devices subject in previous GATE papers. Average marks 1.00.

In the figure, D1 is a real silicon pn junction diode with a drop of 0.7 V under forward bias condition and D2 is a Zener diode with breakdown voltage of -6.8 V. The input Vin(t) is a periodic square wave of period T, whose one period is shown in the figure.

 

Assuming  10 $\tau$ << T, where $\tau$ is the time constant of the circuit, the maximum and minimum values of the waveform are respectively.

In the circuit shown below, the Zener diode is ideal and the Zener voltage is 6 V. The output voltage Vo (in volts) is _______.

 

A Zener diode, when used in voltage stabilization circuits, is biased in