**Teaching Experience:**

** ** M.Sc. Since 2002 to till date

B.C.A: Since 2004 to till date

Polytechnique: 2003-04

My Teaching Area:

__M.Sc. Part-I__

*CLASSICAL ELECTRODYNAMICS*

**Electrostatics:** Multipolc expansion. Electrostatics with ponderable media. Boundary value problems. With dielectrics, Clausius-Mossoti equation, Model for molecular polarizability, Electrostatic energy for dielectric media.

**Magnetostatics:** Magnetic multipoles. Dipole-Dipole interaction. Fermi contact term.

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*ELECTRONICS*

**Bipolar devices:** Carrier concentration in intrinsic semiconductor, Fermi level in intrinsic and extrinsic semiconductor, basic semiconductor equations, volt-ampere equation in pn diode, temperature dependence of VI characteristics of pn diode, dynamic diffusion capacitance, Ebers-Mole equation, expression for transistor alpha, (Integrated Electronics: J. Millman and C Halkias).

**Field-effect transistor:** Ideal voltage controlled current source, JFET, MESFET, MOSFET ( both enhancement and depletion type), structure, volt-ampere characteristics, the DC analysis of FET, the MOSFET as a resistance, the FET as a switch, the FET as an amplifier, small signal FET model. (Microelectronics : Millman abd Crabel).

**Microwave device:** Conception of negative resistance and its significance, the Tunnel diode, Gunn diode, p-i-n diode, Avalanche photo-diode, IMPATT, TRAPATT, BARITT diodes (Microwave Devices and circuits: S.Y. Liao)

**Photonic device:** Radiative and non-radiative transitions, Optical absorption, Principle photoconductive device, quantum efficiency and photoconductive gain, LED: Commercial LED material, LED construction, response time in LED, LED drive circuitry, photodiode, photovoltaic mode and photoconductive mode, diode laser, attainment of population inversion, photo-transistors, Optical feedback, optical gain threshold current for lasing. (Optoelectronics: J. Wilson and J.F.B. Hawkes).

**Memory device:** Definitions and characteristics of ROM, EROM, EPROM, RAM, SRAM & DRAM; NMOS inverter, propagation delay in NOMOS inverter, the NMOS logic gates, the CMOS inverter, the CMOS logic gates, CCD, introduction to magnetic, optical and ferroelectric memories.( Microelectronics : Millman abd Crabel).

**Operational Amplifiers (OPAMP) applications:** Butterworth active filters of first and second order, RC phase shift oscillator, multivibrators (mon-stable and astable), logarithmic and antilogarithmic amplifiers, comparator, Schmitt trigger, triangular and square wave generators, high input impedance voltmeter. (Operational amplifier: Robert F. Coughlin and Fredrick F. Driscoll).

**Analog circuits:** Bipolar transistor bias stabilization against variation of temperature, IC, VBE and b, emitter follower, hybrid-p common emitter transistor model and short circuit current gain. (Integrated Electronics: J. Millman and C Halkias).

**Feedback amplifiers:** Classification of amplifiers, the feedback concept, the transfer gain with feedback, input and output resistances in the case of voltage-series-, current-series-, voltage shunt-, and current shunt negative feedback, bandwidth expansion and reduction of noise by negative feedback. (Integrated Electronics: J. Millman and C Halkias).

**Power circuits and system:** Large signal amplifiers, harmonic distortion, Class A, -B and –AB operation, efficiency of class A amplifier, Class A and –B Push pull amplifiers. (Integrated Electronics: J. Millman and C Halkias).

**Power supply:** Input regulation factor, output resistance, temperature coefficient; series voltage regulator preliminary and use of Darlington pair (Integrated Electronics: J. Millman and C Halkias).

**Monolithic IC regulators** (LM 105, LM340, LM 317, mA 723, 78**, & 79** series and their basic principle). (R. F. Coughlin and F.F. Driscoll)

**Communication Electronics:** Basic architecture of electronic communication. Amplitude Modulation: Ordinary AM generation demodulation; Generation of DSB signal and demodulation of DSB signal; Generation of SSB signal and demodulation of SSB signal; Generation of VSB signal and demodulation of VSB signal; Frequency translation and mixing , Frequency division multiplexing (FDM). Conception of angle modulation, Fourier spectra of angle modulated signal. (Analog and digital communications: H. P. Hsu).

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*MATHEMATICAL METHODS OF PHYSIC:*

**Tensor Calculus: **Cartesian tensors. Symmetric and antisymmetric tensors. Levi Vivitia tensor density. Pseudo tensors. Dual tensors. Dire4ct product and contraction. Dyads and dyadics. Covariant, Contravariant and mixed tensors. Christoffel symbols and differentiation of tensors.

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__M.Sc. Part-II__

*ATOMIC AND MOLECULAR PHYSICS:*

Quantum states of one electron atoms – Atomic Orbitals – Hydrogen spectrum – Pauli’s principle. Transition rates and Slection rules. Fine structure of hydrogen and alkali spectra. Quantum defect in alkali spectra.

Normal and anomalous Zeeman effect – Paschen Back effect – Stark effect – Lamb shift.

Two electron systems – Role of Pauli exclusion principle – Spectra of He atoms. Singlet and Triplet series. Independent particle model. Excited states.

Many Electron Atoms: Equivalent and non – equivalent electrons – LS coupling and JJ coupling. Hund’s rule. Hyperfine structure (qualitative) – Line broadening mechanisms (general ideas)

**LASERS:** Spontaneous and Stimulated emission – Einstein coefficients – Population inversion. Rate equation – Threshold conduction for laser oscillation – Pumping schemes – Role of resonant cavity – Three and four level systems – He-Ne laser, CO2 laser, Semiconductor laser, Laser induced reactions and isotope separations. LASER as a probe for studying excited states of atoms.

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*ADVANCED ELECTRONICS-I*

**Sweep Generators:** General features of time-base signal, Methods of generating time-base waveform----exponential sweep circuit, negative resistance switches, Miller and bootstrap time-base generators. (Pulse, Digital and Switching waveforms: J. Millman H. Taub]).

**Silicon Controlled Rectifier (SCR):** The four layer diode, pnpn characteristics, V-I characteristics of three terminal SCR, SCR control circuit [ pulse control, power control, over voltage protection circuit], the triac and diac.] (Integrated Electronics: J. Millman and C Halkias).

**Pulse amplifier: **Response to a pulse, bandwidth requirement, rise time and sag of the pulse, Shunt-peaked video amplifier. High and low frequency compensation. (Electronic Fundamentals and applications: J. D. Ryder)

**Television:** Television system and standard, Scanning, blanking and synchronizing pulses, Television camera (B & W picture and colour picture), Tonal and Colour characteristics of pictures, Composite B 7 W and colour video signals, block diagram of colour TV transmitter and receiver.[Electronic communication systems: G. Kenedy].

**Waveguides: **Reflection of waves from conducting plane, the rectangular waveguide TM and TE waves), Cylindrical waveguides (the TEM waves in coaxial line), attenuation in duides due to imperfect conductors. [ Networks, lines and fields: J. D. Ryder]

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*ADVANCED ELECTRONICS-II*

**Simplifying Logic Circuit & Mapping & code conversion:** Sum-of-product and product of sum (using De Morgan’s theorem, using NAND and using NOR logics), Karnaugh Maps, Don’t care combinations, Hybrid logic, Minimization of multiple output circuit, variable spacing, Quine-McClusky method, function minimization of multiple output circuits. Encoding , decoding BCD to decimal & BCD to seven-segment code. (Digital principles: R. L. Tokheim, Schaum’s Outline Series).

**Registers and counters:** Buffer register, data transmission shift register, serial in serial out shift register, serial in parallel out shift register, parallel in serial out shift register and parallel in parallel out shift register, bi-directional shift register, universal shift register, dynamic shift register, applications of shift registers: Up/down ripple counter, effect of propagation delay in ripple counter, up/down synchronous counter, ring counter.

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