be question papers

Basic Electronics is a subject offered by GTU (Gujarat Technological University) and comprises six fundamental chapters. Below is a concise and refined representation of the content for each chapter:

1. Diode Theory and Applications:

In this chapter, students will gain a comprehensive understanding of diode theory and its various applications. The topics covered include forward bias, reverse bias, and VI characteristics of diodes. Students will learn about ideal diodes and the second and third approximations of diode behavior. The use of surface mount diodes and Zener diodes will be explored, along with practical aspects such as testing diodes using a multimeter. Rectifier circuits like half-wave, full-wave, and bridge rectifiers will be studied, as well as RC and LC filters. Students will also delve into the design of unregulated DC power supplies, clipping and clamping circuits, voltage multiplier circuits, and the proper method of reading semiconductor diode datasheets.

2. Bipolar Junction Transistors and its Biasing:

In this chapter, students will be introduced to the operation of Bipolar Junction Transistors (BJTs) and their voltage and current characteristics. The three configurations of BJT amplifiers: Common Emitter (CE), Common Base (CB), and Common Collector (CC) will be thoroughly explored, along with their respective DC load lines and bias points. Various biasing techniques like base bias, emitter feedback bias, collector feedback bias, and voltage divider bias will be covered. Students will also study thermal stability, biasing BJT switching circuits, and transistor power dissipation and switching time. Additionally, they will learn how to test bipolar junction transistors using a multi-meter and interpret BJT datasheets.

3. Special Purpose Diodes and Transistors:

This chapter focuses on special-purpose diodes and transistors that find significant applications in electronics. Students will learn about Light Emitting Diodes (LEDs), Zener diodes and their usage in voltage regulation circuits, Photodiodes, Solar cells, PIN diodes, Varactors, Schottky diodes, Varistors, Tunnel diodes, Seven Segment displays, Sixteen Segment displays. The identification of segments on pins using a multi-meter will be demonstrated, along with the working principles of Dot-matrix LED displays and Phototransistors. The chapter will also cover Opto-couplers and provide guidance on reading datasheets of optoelectronic devices.

 

 

4. AC Analysis of BJT Circuits and Small Signal Amplifiers:

In this chapter, students will explore the AC analysis of BJT circuits and the operation of small signal amplifiers. Topics include coupling and bypass capacitors, AC load lines, Transistor models and parameters, and the analysis of common emitter, common base, and common collector amplifier configurations. A comparison of CE, CB, and CC circuits will be made to highlight their respective characteristics. Furthermore, the chapter will discuss the usage of transistors as switches.

5. Field Effect Transistors (FET) and its Biasing:

Students will be introduced to Field Effect Transistors (FETs) in this chapter, along with the biasing techniques for both Junction Field Effect Transistors (JFETs) and Metal-Oxide-Semiconductor FETs (MOSFETs). A comparison between BJT and FET devices will be provided, followed by a detailed analysis of JFET characteristics. The chapter will cover FET biasing in the ohmic and active regions, transconductance, amplification, and switching characteristics. Additionally, students will learn about D-type and E-type MOSFETs, CMOS technology introduction, and MOSFET testing. Reading datasheets for FETs and MOSFETs will also be part of this module.

6. Digital Circuits:

The final chapter will cover the basics of digital circuits. Students will become familiar with fundamental logic gates such as AND, OR, NOT, NAND, NOR, EX-OR, and EX-NOR. Building AND and OR gates using diodes will be demonstrated. The module will also present an overview of various digital logic families including RTL, DTL, TTL, and CMOS, with a comparison of their characteristics and applications.