Dr. Mimoza Ristova, Professor
Course content:
Vacuum Electronics: Ballistic Electronics. Electron motion in electrical, magnetic field and their combination. Application of Ballistic Electronics. Cathode tube. Magnetron. Electrostatic lens, magnetic lens. Electron microscope. Free electrons in metals and thermoelectron emission: Energy method of analysis. Potential profile of a crystal lattice model.
Fermi-Dirac distribution function. Thermoelectronic emission. Thermocathodes. Enhanced thermoelectronic emission. Secondary thermoelectronic emission. Autoelectronic emission.
Application of SEM (scanning electron microscopy (exercises). Vacuum diode (two-electrode vacuum system). Space charge equation and characteristics. Semiconductor Electronics: Semiconductors. pn-junction. Diodes. Bipolar Layer Transistor. Build, parameters and features. Stabilization of operating point. Circuits for single source power supply. Bipolar transistor amplification. Field effect transistors. Construction, features and parameters. FET and MOSFET. Field transistor as amplifier, capacitor, resistor and switch. Rectifiers. Switches. Amplifiers, Feedback. Operational amplifiers. Boolean algebra. Logic circuits. Basics of digital electronics.