syllabus for physics 6th semester pass course BSC

CRYSTALLOGRAPHY & ELECTRONICS    Group A : Elements of Crystallography Amorphous and crystalline materials, Lat...

CRYSTALLOGRAPHY & ELECTRONICS  

Group A : Elements of Crystallography

Amorphous and crystalline materials, Lattice translation vectors, unit cell, primitive cell, basis, Miller indices and representation of crystal planes, interplaner spacing, symmetry consideration, symmetry group, space group, different types of crysta1 structures, classification of crystals based on nature of structures, Bravias lattice, reciprocal lattice, Theory of Laue Spots. 

 Bragg’s law, diffraction of X-ray, measurement of Lattice parameter for cubic lattices. 

Group B : Electronics 

Thermo-ionic emission: classical deduction of Richardson’s equation, characteristic curve of a vacuum diode, space charge, temperature and space charge limited current, Child Langmuir law, Triode and its characteristics curves, parameters from these curves. Triode as an amplifier, graphical analysis with load line. 

Semiconductors : junction diode, zener diode & their applications. 

Basic concepts of Transistor: PNP & NPN transistors operation, characteristics curves of a transistor in common emitter and common base mode - current amplification factor, input & output resistance. Transistor as an amplifier (simple Mathematical treatment) in CE mode, d.c and a.c load line, graphical analysis of the amplifier. 

Feed back in amplifiers: conditions of oscillation, Barkhausen criteria ;  Working principle & description of Tuned collector and Hartley oscillators mentioning frequency of oscillation. 

Logic gates: OR, AND, NOT, NAND, NOR, XOR, their circuit realization & truth tables . de Morgan’s theorem. 

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