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Laser projector for advertisement
Krist, Jakub ; Bajer, Arnošt (referee) ; Pavlík, Michal (advisor)
The scope of this work is to design equipment capable of using a single laser source project programmed image or text. Introduction is a summary outlining the basic principles of image projection in laser imaging. This thesis describes the design of a laser projector that is using microcontroller AT MEGA16 together with auxiliary electronics and rotating ring, able to draw the desktop system bitmap graphics.
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CMOS Transconductance Amplifier Design
Zelinka, Miloslav ; Bajer, Arnošt (referee) ; Musil, Vladislav (advisor)
The work deals with question of design and simulation of integrated analog circuits in CMOS technology. The general aim of my thesis is to design transconductance amplifier and analyze its frequency response and stability in feedback systems. The two stage operational – transconductance amplifier with compensation capacitor is presented in my work. This compensational method of pole splitting used together with the nulling resistor prevents amplifier from oscillation. This work also deals with circuit solution of computing amplifier. It verifies compensation influence of frequency for phaser and frequency characteristics.
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Remote control of low voltage curcuit-breaker
Brtnický, Jiří ; ABB, Stanislav Korčián, (referee) ; Bajer, Arnošt (advisor)
The work deals with design and contruction of the extension module remote control, through which the starter motor is remotely controlled. On the basis of specified input parameters such as size, engine type, engine power, voltage, etc., is given control module design, which includes a control unit (microprocessor) for remote control of motor drive and assessment of motor starters. The work also includes analysis of the problems of mechanical transmission, depending on the management and selection of an engine. This work is finished with the physical realization of a prototype control program by drawing a flowchart and manufacture of printed circuit boards with subsequent recovery and testing.
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Design of CMOS integrated circuits
Nevrkla, Marek ; Bajer, Arnošt (referee) ; Musil, Vladislav (advisor)
This work deals with issues of design and simulation of analog CMOS integrated circuit. The general aim is to design transconductance amplifier working with low input offset voltage. The two stage operational – transconductance amplifier with compensation RC element is presented. Creation topography amplifier by the help of technology AMIS 07.
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Charge Pumps
Hála, Jaroslav ; Bajer, Arnošt (referee) ; Horák, Michal (advisor)
This work deals with issues of correct choose and simulations of voltage multipliers and charge pumps used in electronics. Work contents enumeration of many types of circuits and their propriety for various usage with cost minimisation.
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Design of CMOS operational amplifiers
Němec, Tomáš ; Bajer, Arnošt (referee) ; Musil, Vladislav (advisor)
This work deals with issues of design and simulation of analog integrated circuit. The general aim is to design high-speed transconductance differentiating amplifier. The two stage operational – transconductance amplifier with compensation RC element is presented. This compensation method of zero nulling used prevents amplifier from oscillation.
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The Sensor Systems Design and Optimization for Energy Harvesting Applications
Žák, Jaromír ; Husák, Miroslav (referee) ; Bajer, Arnošt (referee) ; Hubálek, Jaromír (advisor)
Dissertation thesis is focused on using alternative energy sources called energy harvesting. This thesis offers a solution to problems with autonomous powering of sensor networks if primary power source recovery is impossible. In these cases, energy of the external power (e.g. temperature, light, motion) should be used. Proposed solution should be especially used in the field of medical applications (e.g. cochlear implants, pacemakers, insulin pumps). Long time monitoring of the personal health status is also possible when employing automated sensor systems. In this work, there is state of art review relating to the low power energy sources for an alternative powering of sensor systems. It was observed that existing systems are almost prepared for the implementation of energy harvesting power sources. The energy harvesting power sources have been developed by numerous researcher teams around the world, but there are only a few variants of power management circuits for effective energy gaining, storing and using. This area has a huge potential for the next research. The issues regarding to the distribution of gained energy are solved on the complex level in the thesis. For these purposes, a new simulation model of the whole system (fully implantable artificial cochlea) including its subcircuits was developed in the SPICE environment. It connects independent subcircuits into a single comprehensive model. Using this model, a few novel principles for energy distribution (e.g. Charge Push Through technique) was developed. In the near future, these techniques are also applicable to the design of versatile sensor systems.
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Rail-to-rail CMOS operational amplifier
Buček, Vladimír ; Bajer, Arnošt (referee) ; Musil, Vladislav (advisor)
The object of this project was to get acquainted with proposal of operational amplifier of technology CMOS. Primarily was analyse the structure of transistors PMOS and NMOS, thanks to them we could gradually suggested single blocks of operational amplifier. The work treats about proposal of differential pair, current mirror and the ending stage of amplifier. After the proposal of single blocks was done control of operational amplifier by simulation programme CADENCE.
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