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SYLLABUS

UNIT-1

Network Elements and Network Theorems Passive elements, Power sources, Active Elements, Network Models: T and p transformations, Superposition theorem, Thevenin’s Theorem, Norton’s theorem. Reciprocity Theorem and Maximum power transfer theorem (Simple problems). Two-port Networks – Introduction – Z-parameters, Y-parameters, h-parameters and ABCD-parameters (Simple problems).

UNIT-2

Band theory of P-N junction 1. Energy band in solids (band theory), valence band, conduction band and forbidden energy gap solids, insulators, semi conductors and, pure or intrinsic semiconductors and impurity or extrinsic semiconductors. N-type extrinsic semi-conductors, P- type extrinsic semi-conductors, Fermi level, continuity equation. 2. Diodes: P-N junction diode, Bridge rectifier, Zener diode & its Characteristics. Zener diode as voltage regulator.

UNIT-3

1. Bipolar Junction Transistor (BJT) – p-n-p and n-p-n transistors, current components in transistors, CB, CE and CC configurations – transistor as an amplifier – RC coupled amplifier.(Qualitative analysis) 2. Feedback Concept & Oscillators: Feedback, General theory of feedback – Concepts of a Oscillators, Barkhausen’s criteria, Phase shift Oscillator.

UNIT-4

1. Digital Electronics Binary number system, converting Binary to Decimal and vice versa. Binary addition and subtraction (1’s and 2’s complement methods). Hexadecimal number system. Conversion from Binary to Hexadecimal – vice versa and Decimal to Hexadecimal vice versa. 2. Logic gates: OR, AND, NOT gates, truth tables, realization of these gates using discrete components. NAND, NOR as universal gates, Exclusive – OR gate (EX-OR). De Morgan’s Laws – statement and proof.