EI25C03 Analog Electronics – Semester III – EIE / ICE – R-2025

Subject Code & Name: EI25C03 – Analog Electronics

Regulation: R-2025

Semester: III (Third Semester)

Branch: B.E. Electronics and Instrumentation Engineering (EIE) / B.E. Instrumentation and Control Engineering (ICE)

Credits / L-T-P: 3 Credits | L-T-P: 3-0-0

Course Objectives

• This course aims to provide a solid understanding of the structure, operation, and applications of electronic devices.
• It focuses on biasing of BJT and JFET devices, amplifier configurations, feedback concepts, and oscillator design for specified frequencies.

Full Unit-wise Syllabus

Unit I – PN Junction Devices

PN junction diode – structure, operation and V-I characteristics, transition and diffusion capacitances – rectifiers – half wave and full wave rectifier with capacitor filter. Zener diode – reverse characteristics – Zener as voltage regulator. Display devices – LED, Laser diode, Photodiode.

Unit II – BJT and Small Signal Amplifiers

BJT – structure, operation of NPN and PNP transistor, input and output characteristics of CE, CB and CC configurations. DC Load Line and operating point, need for biasing – bias stabilization – fixed and voltage divider biasing. Single stage BJT amplifiers – AC analysis of CE and CC amplifier with voltage divider bias using h-parameters – gain and frequency response.

Unit III – Field Effect Transistors and Thyristors

JFET, MOSFET – structure, operation and characteristics, JFET biasing – self and voltage divider biasing. FET small signal model – analysis of CS, CG and source follower.

Unit IV – Differential Amplifiers and Large Signal Amplifiers

Cascade amplifier, BJT differential amplifier – DC and AC analysis of common mode gain, differential mode gain and CMRR. Single tuned amplifier – construction, operation and frequency response. Power amplifiers – class A, class B and class C (qualitative analysis only).

Unit V – Feedback Amplifiers

Feedback concepts, feedback topologies – voltage/current, series/shunt feedback – transfer gain with feedback – effect of negative feedback on input and output resistances.

Unit VI – Oscillators

Conditions for oscillations, RC phase shift, Wien bridge, Hartley, Colpitts, and Crystal oscillators.

Course Outcomes (COs)

• CO1: Explain the structure, operation, and characteristics of PN junction devices including diodes, Zener diodes LEDs, laser diodes, and photodiodes, and their applications in rectifiers and voltage regulation.
• CO2: Analyze and design BJT and FET circuits, including biasing, small signal amplifiers, and single stage CE CB, CC, CS, CG, and source follower configurations.
• CO3: Evaluate differential and large signal amplifier configurations, including cascade and power amplifiers and analyze differential mode gain, common mode gain and CMRR.
• CO4: Apply feedback concepts to design feedback amplifiers and assess the effect of negative feedback on gain input, and output resistances.
• CO5: Design and implement oscillators (RC, Wien bridge Hartley, Colpitts, Crystal) and signal conditioning circuits for specified frequencies using simulation and hardware verification.

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. Electronics and Instrumentation Engineering R-2025 Curriculum
Last Updated: September 2026