# Electronics and Solid State Devices

## Electronics and Solid State Physics

(Timing: Monday and Tuesday, 08:00 AM – 09:00 AM)

### Unit I

**Circuit analysis:** Networks-some important definitions, loop and nodal equations based on DC and AC circuits (Kirchhof's Laws).

**Four terminal network:** Ampere-volt conventions, open, close and hybrid parameters of any four terminal network; Input, Output and mutual impedence for an active four terminal network.

**Various circuit theorems:** Superposition, Thevenin, Norton, reciprocity, compensation, maximum power transfer and Miller theorems.

### Unit II

**Semi-conductors and rectifications:** Charge densities in N and P materials; Conduction by drift and diffusion of charge carriers, PN diode equation; capacitance effects.

**Rectifiers:** Half-wave, full wave and bridge rectifier: calculation of ripple factor, efficiency and regulation; Filters: series inductor, shunt capacitor, L section and π section filters.

**Voltage regulation:** Voltage regulation and voltage stabilization by Zener diode, voltage multiplier.

### Unit III

**Transistor and transistor bias circuits:** Notations and volt-ampere characteristics for bipolar junctions, transistor; Concept of load line and operating point, Hybrid parameters.

**Transistor as amplifier:** CB, CE, CC configurations; Analysis of transistor amplifiers using hybrid parameters and its gain-frequency response; Cascade amplifiers, basic idea of direct coupled and R-C coupled amplifiers; Differential amplifiers.

**Need of bias and stability of Q point:** stability factors, various types of bias circuits for thermal bias stability: fixed bias, collector to base feed back bias and four resistor bias.

### Unit IV

**Amplifier with feed back:** Concept of feed back, positive and negative feed back, voltage and current feed back circuits.

**Advantages of negative feed back:** Stabilization of gain, effect of negative feed back on output and intput resistance, reduction of nonlinear distortion, effect on gain - frequency response.

**Oscillators:** Criteria for self excited and self sustained oscillations, circuit requirement for build-up of oscillation; Basic transistor oscillator circuit and its analysis: Colpitt's and Hartely oscillators, RC Oscillators, crystal oscillators and its advantages.

### Unit V

**Field effect transistors and logic circuits:** Junction field effect transistor (JFET) and metal oxide semiconductor field effect transistor (MOSFET): circuit symbols, biasing and volt-ampere characteristics, source follower operation of JFET, FET as variable voltage resister.

**Logic circuits:** Logic fundamentals: AND, OR, NOT, NOR, NAND, XOR gates, Boolean algebra, De Morgan's theorem, positive and negative logic, logic gates circuit realization using DTL and TTL logic, simplification of Boolean expressions.

## Reference books

- John D. Ryder, Electronic Fundamentals and Applications, Prentice Hall of India Pvt. Ltd., New Delhi.
- John D. Ryder, Engineering Electronics, McGraw Hill Book Company, New Delhi.
- Jacob Millman and Christosc Hailkias, Integrated Electronics. Analog and Digital Circuits and systems: McGraw-Hill Ltd. (1972)
- Albert Paul Malvino, Digital Computer Electronics, Tata McGraw-Hill publication Co. Ltd., New Delhi (1983)
- Kumar & Gupta, Hand book of Electronics.
- G.K. Mithal, Hand Book of Electronics.
- G.K. Mithal, Electronics Devices and Applications.
- R.P. Jain, Digital Electronics.