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Analog switch for switched current circuits
Jahn, Michal ; Kledrowetz, Vilém (referee) ; Pavlík, Michal (advisor)
This bachelor’s deals with a design of analog switches using switched current technique and CMOS technology. The design of these switches was implemented and subsequently simulated in the CADENCE environment where the emphasis was on suppression of transient processes. It is a charge injection error and a clock-feedthrough error when charging the capacities of channel during switching on or opening.
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Design of paddle shifts for formula student
Dugas, Martin ; Vrána, Radek (referee) ; Koutný, Daniel (advisor)
This bachelor thesis concerns design of paddle shifters for Formula Student. It deals in theoretical part with knowledge of today’s shifting mechanisms, additive manufacturing technologies and ways of weight optimization of parts. In design section, it covers with actual solutions of this problems, whereas the most important target was to minimalize mass and maximize stiffness of the whole mechanism.
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Controlled high voltage source
Chloupek, Jiří ; Hanák, Pavel (referee) ; Koton, Jaroslav (advisor)
The aim of this master thesis is to design a high voltage source for the generation of bipolar pulses, which are suitable for the process of reversible and irreversible electroporation. Further design is electronic control. The first part of the thesis analyzes the theoretical knowledge about the process of electroporation, the second part describes the principles of realization of such sources, the next part deals with the design of the source and its control. The penultimate part is a description of the user manual and the last part is dedicated to the measurement.
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10 port GSM relay switch with GUI
Bartulec, Tomasz ; Lattenberg, Ivo (referee) ; Janovič, Filip (advisor)
System hardware and software design for a GSM switch with ten switching outputs, controlled via SMS. Description of used GSM module and its properties, feasibility and requirements, design and description of supply circuits for module outputs to relay outputs decoding, plug-in realisation of outputs. GSM module application software creation, remote SMS control requests implementation, sender's phone number check and information about completed requests by call-backs. Adding AT command to set up device. Development of web server providing control of switch throught Internet browser, solving communication between server and device, and data management. Testing of created SW and evaluation of final design from aspects of usage.
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BJT and MOSFET transistor-based switches - educational laboratory equipment
Bartoň, Ondřej ; Langhammer, Lukáš (referee) ; Šotner, Roman (advisor)
This thesis deals with the design of new experimental laboratory equipment with bipolar and unipolar transistor switches. This work analyzes the components needed for circuit design, such as integrators, comparators, bipolar, and unipolar transistors. Designed system is going to include a functional rectangular signal generator that controls unipolar and bipolar transistor switches. These switches will be designed for current switching up to 1 A. The aim of the thesis is to verify the functionality of designed circuits using the simulation software PSpice.
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ARC filter for frequency analyser
Janečka, Martin ; Murina, Milan (referee) ; Sedláček, Jiří (advisor)
The aim of this work is to propose and realization an active frequency filter with a 4th grade bandpass for making it possible to electronically tune the resonant frequency in range of 10Hz to 100kHz and adjust bandwidth. The thesis discussed two possibilities of filter connections using cascade synthesis. To choose a better option a filter simulations were made in Pspice. Based on the simulations, the number of components and the possibility of electronic tuning a better option is selected. This circuit is implemented, measured and then compared with simulations.
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Future trends of the specific semiconductor components utilization
Chocholáč, Jan ; Kosina, Petr (referee) ; Běťák, Petr (advisor)
The bachelor thesis deals with discrete components such as Multiplexers and Sample-and-Hold. The central objective of this work is to provide a description of how the components work, to outline a survey of their construction design, and to define the relations between the product series. By the help of graphic diagrams, various aspects of difference and comparison related to the manufacturers are specified in order to complement the main analysis.
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Controlled source of pulsed electric field
Burian, Josef ; Kubánek, David (referee) ; Koton, Jaroslav (advisor)
The aim of this master thesis is to design a power source for generating pulsed electric field for the needs of the technological process of electroporation of fruit musts and mashes. To design further the network of switched capacitors and inductors based on the required pulse and to design and implement the basic control unit together with the switching transistors. The thesis will include calculations and simulations used in the draft, also design solutions and measured values. This thesis is divided into several basic parts. In the first part there is discussed in detail the theoretical knowledge of electroporation and the desired characteristics of generated pulses are chosen according to this knowledge. Each part of electroporation workplace is described in the second part of this thesis, beginning from the source through the control system to the electrode chamber. For each of these parts are given different possible alternatives. In the next chapter is already proceeded to the design of the source. There are listed required parameters of the pulses and according to them calculations and the design are gradually carried out. Another chapter deals with the simulations, which are used to verify the calculated values and conditions in the electroporated sample. Last but one part discusses the mechanical design of the workplace. There are described all problems of the construction and commissioning of the product. The last section is dedicated to the workplace measurement and analysis of the measured results.
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Type test of a switching device
Knebl, Ladislav ; Dostál, Lukáš (referee) ; Valenta, Jiří (advisor)
Protection of the electrical ciruits in electrical installations by circuit breakers is the most common way of protecting circuits from overcurrents. In the low voltage installations, fuses were replaced by the circuit breakers. For this reason, it is important to put great emphases on their quality and user safety . This thesis deals with principle of the circuit breaker, its function, construction requirements and requirements for the type test, which the manufacturer needs to pass before release the device on market. These requrements are listed in Czech Technical Standard ČSN EN 60898-1. In this thesis, specific type of circuit breaker will be also described. Some sequences of tests described in the standard will be performed on that breaker.
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BJT and MOSFET transistor-based switches - educational laboratory equipment
Bartoň, Ondřej ; Langhammer, Lukáš (referee) ; Šotner, Roman (advisor)
This thesis deals with the design of new experimental laboratory equipment with bipolar and unipolar transistor switches. This work analyzes the components needed for circuit design, such as integrators, comparators, bipolar, and unipolar transistors. Designed system is going to include a functional rectangular signal generator that controls unipolar and bipolar transistor switches. These switches will be designed for current switching up to 1 A. The aim of the thesis is to verify the functionality of designed circuits using the simulation software PSpice.
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