Subject Code & Name: EE25C05 – Electronic Devices and Circuits
Regulation: R-2025
Semester: III (Third Semester)
Branch: B.E. Electrical and Electronics Engineering (EEE) / B.E. Electrical and Computer Engineering (EEE(Comp))
Credits / L-T-P: 3 Credits | L-T-P: 3-0-0
Course Objectives
- The course introduces students to the physical principles and operational characteristics of electronic devices such as diodes, BJTs, and FETs.
- Through laboratory-integrated lectures, students will apply these concepts in designing and analyzing rectifiers, amplifiers, and switching circuits.
- The course emphasizes problem-solving and hands-on skills needed for analog circuit implementation.
Full Unit-wise Syllabus
Unit I – Semiconductor Physics and Diodes
Energy bands, carrier generation and recombination, drift and diffusion currents. PN junction operation, ideal and real diode characteristics. Diode Applications: Rectifiers, clippers, clampers, and voltage regulators.
Unit II – Bipolar Junction Transistors (BJTS)
Structure and modes of operation: Active, Cutoff, Saturation. BJT biasing techniques and stability analysis. Small signal analysis and single-stage amplifier design.
Unit III – Field Effect Transistors (FETs)
JFET and MOSFET structures, characteristics and parameters. FET biasing methods and analog switching applications. Common source amplifier design and multistage configurations.
Unit IV – Frequency Response and Power Amplifiers
Frequency response of amplifiers: low, mid, and high frequency. Decibel gain, Bode plots, gain-bandwidth trade- off.Power amplifiers: Class A, B, AB, C – operation and efficiency.
Unit V – Feedback Amplifiers and Oscillators
Positive and negative feedback, feedback topologies, gain enhancement. Oscillators – Colpitts, Hartley, Crystal – design and analysis.
Course Outcomes (COs)
- CO1: Explain semiconductor physics and analyze the characteristics of diodes and their applications.
- CO2: Analyze and design BJT based circuits including biasing and single stage amplifiers.
- CO3: Analyze FET characteristics and design amplifier and switching circuits using JFET and MOSFET.
- CO4: Evaluate frequency response and design power amplifiers for various applications.
- CO5: Apply feedback concepts and design oscillators and electronic circuits for practical implementations.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 40% | End Semester Examinations 60%
- Internal methodology: Assignments (20%), Solution to application-oriented problems using software (20%), Review of GATE questions (20%), Internal Examinations (40%)
Source: Official Anna University – B.E. Electrical and Electronics Engineering R-2025 Curriculum
Last Updated: September 2026
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