Electronic Devices and Circuits — Summer 2025

Explain Barrier Potential & Depletion Layer.

Draw & Explain Energy Band diagram for Conductor, Insulator and Semiconductor

Explain Intrinsic Semiconductor with its construction diagram and flow of current through it using holes and electrons.

Define following in terms of Diode theory. 1. Knee Voltage 2. Bulk Resistance 3. Power Dissipation

Draw and explain third approximation of Diode.

Explain Centre tapped Full wave Rectifier with its circuit diagram and waveforms.

Explain Positive and Negative Clamper using its circuit diagram and wave forms.

Compare Zener Breakdown and Avalanche Breakdown

Explain Schottky Diode.

Enlist various Optoelectronics devices. Explain any two with its construction.

Explain unbiased NPN Transistor.

Explain Transistor as a Switch.

What is Qpoint? Explain DC load line for CE transistor configuration.

Explain Optocoupler.

Compare CB, CE and CC configuration of Transistor.

Explain Voltage Divider bias circuit for Transistor Biasing.

Explain the significance of Coupling Capacitor in AC biasing of Transistor

Explain Collector feedback bias method for transistor biasing.

Explain Complementary Symmetry pair class B Push Pull amplifier with its circuit diagram and waveforms.

Explain Class Aoperation with circuit and waveforms.

Explain P Channel Enhancement type MOSFET.

Explain Drain curves for JFET with its all regions. OR1

Compare JFET and MOSFET.

Draw and explain 04 types of negative feedback configuration

Explain effect of Negative Feedback in Amplifier characteristics.