|
|
Design of current sense comparators for automotive front lighting
Schilhab, Jan ; Prokop, Roman (referee) ; Kledrowetz, Vilém (advisor)
The diploma thesis deals with the problem of current sensing on integrated DC-DC converter switches using a comparator with reference current. Various current sensing methods are discussed in the thesis and a method of sensing current on a MOS switch using a smaller channel width reference transistor is thoroughly described. The paper also describes the basic properties of comparators and a suitable methodology for designing a fast comparator operating continuously in time. A major part of the thesis is devoted to the design of comparator blocks for current sensing at the top and bottom switches on the transistor level and presentation of the results obtained by simulations in Cadence Virtuoso environment. At the end, simulations are presented to verify the function of the designed blocks in a simplified buck DC-DC converter system.
|
|
|
Measurement of image CCD sensors parameters
Pavelka, Adam ; Slanina, Martin (referee) ; Říčný, Václav (advisor)
The Bachelor’s thesis deals with image CCD sensors. These transform the light radiation falling on the photosite array into the picture signal. The project describes the principals of their work and introduces the basic parameters of the sensors. The project further deals with questionability of basic parameters measurement and possibility to define equivalent parameters measurable in the laboratory conditions. Following characteristics are listed to every parameter theoretical values or values presented by the producers, conditions influencing the measurement, methodology of measurement in the laboratory conditions, list of used measuring tools, evaluation of the measured values and estimated rate of relevancy towards the theoretical preconditions.
|
|
|
Diode shaping circuit examples for educational purposes
Kasatkin, Alexey ; Petržela, Jiří (referee) ; Šotner, Roman (advisor)
Tato bakalářská práce je věnována návrhu a realizaci diodového obvodu tvarovače a diodových omezovačů obou polarity s různými zapojeními pro laboratorní. Prvním z nich je tří segmentový obvod tvarovače s aktivním prvkem (operačním zesilovačem). Obvod převádí trojúhelníkový signál na harmonický signál. Druhým obvodem je vykrajovač s proudovým sledovačem, který signál na výstupu odřízne. Třetí je jednoduchý omezovač s nezávislým nastavením úrovně omezení. Cílem konstrukce bylo dosáhnout co nejmenšího zkreslení signálu na výstupu. Funkčnost obvodů byla ověřena simulací a měřením.
|
|
|
Measurement of image CCD sensors parameters
Pavelka, Adam ; Slanina, Martin (referee) ; Říčný, Václav (advisor)
The Bachelor’s thesis deals with image CCD sensors. These transform the light radiation falling on the photosite array into the picture signal. The project describes the principals of their work and introduces the basic parameters of the sensors. The project further deals with questionability of basic parameters measurement and possibility to define equivalent parameters measurable in the laboratory conditions. Following characteristics are listed to every parameter theoretical values or values presented by the producers, conditions influencing the measurement, methodology of measurement in the laboratory conditions, list of used measuring tools, evaluation of the measured values and estimated rate of relevancy towards the theoretical preconditions.
|
guest ::
