26 hod., optionally

1. Ohm´ s law, conductor resistance, resistivity, resistance temperature dependence, parallel and series resistors, Kirchhoff´s laws, V-A characteristics and internal resistance of an ideal voltage or current source, real voltage source, unloaded and loaded resistive divider.
2. Method of sequential simplification, principle of superposition, Thevenin´s theorem.
3. Method of loop currents and node voltages. Transfiguration star - delta. Improving the geometrical interpretation of the mathematical operations: differentiation, indefinite and definite integration. Average value definition. Instantaneous and true (average) power, typical examples.
4. Ideal inductor, basic equation, consequences. RL circuit behavior - exponential transient effects at the DC supplying. Harmonic supplying of an ideal inductor, reactance.
5. Ideal capacitor, analogical explanation like at the ideal inductor incl. transients and harmonic supplying (reactance).
6. Passive AC linear circuits - principle and advantages of using of complex numbers, operations with complex numbers, implementation of the complex number to the previously defined reactances. Susceptance, impedance and admittance. Intuitive understanding of the Fourier transform. Phasor diagrams.
7. Power matching in DC circuits. Instantaneous and true power in AC circuits (harmonic supplying). Reactive and apparent power. Power factor. Power matching in AC circuits.
8. Linear/non-linear two-ports. Voltage transfer definition - module and phase frequency characteristics. Linear distortion of signals. nonlinear distortion of signals in non-linear two-ports.
9. Typical passive linear two-ports - integration RC circuit - module and phase frequency characteristics, differential equation in the time domain, voltage step response, theoretical and practical consequences. Analogical information about the derivative RC circuit. Resistive divider with an output capacitor, compensation of this capacitance.
10. Input and output impedance of a linear two-port. Input and output impedance of RC integration and derivative circuit. Wien bridge, shunted T-network. Real coil - tg delta, quality factor. Model with a series or parallel dissipative resistor.
11. Real capacitor - the same consequences like for the real coil. Series and parallel resonant circuit.
12. Basic values of the electro-magnetism, their interpretation and mutual relations. Energy of the magnetic field.
13. Continuation the electro-magnetism (coil and other applications), simple analysis of an electromagnet. Basic knowledge about a three-phase system.