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The Design of current power amplifier for inductive load
Nimrichter, Filip ; Steinbauer, Miloslav (referee) ; Roubal, Zdeněk (advisor)
This batchelor thesis deals with Howland current source that should work with purely inductive loads up to 10 kHz. This current source will excite a coil with a nonlinear magnetic core, so it should deliver a current of at least 4 A. The main focus of the thesis is on the stabilization, practicle design and measurement of real properties of the Howland current source. This stability has been verified in PSpice and Micro-Cap. The practical design was compiled in the program EAGLE.
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LED Driver evaluation kit for Automotive Front-Lighting
Večeřa, Jindřich ; Kubíček, Michal (referee) ; Dřínovský, Jiří (advisor)
This thesis deals with design of evaluation platform for integrated circuit NCV78934, which is designed to control LED headlights in automotive industry. The theory concerning the current regulation of buck converter, schematic design, PCB design and software design are also included in the thesis. Finally the measured data and testing procedures of the designed evaluation platform are discussed.
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Laboratory power supply
Tománek, Radek ; Steinbauer, Miloslav (referee) ; Havlíková, Marie (advisor)
Paper compares several types of power supply from the point of view of output parameter, engineering solution and applied potentiality. Analysis of methods used in power supplies are followed with multipurpose power supply design. Last part includes example of measuring performed with designed power supply.
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Technická a softwarová optimalizace metod konfokální mikroskopie pro fotosyntetické organismy
LIŠKA, Jiří
Laser Scanning Confocal Microscopy is an important method to study photosynthesis. During sample imaging by Confocal Microscope it is not possible to exposed sample by physiological irradiation. Therefore, an independent light source is necessary to be externally added. In this thesis, methods of sample irradiation by an the light sources has been studied, a method of the light source regulation and its synchronization with image acquisition has been solved.
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Controllable Current Source for High Power LEDs with the Use of Arduino Platform
Čáp, Martin ; Škoda, Jan (referee) ; Toman, Marek (advisor)
This bachelor thesis deals with regulation of brightness power LED diodes and design of the control circuits. Here is described how in environment Delphi to create an application to control PWM Arduino outputs. They are discussed linear and switching current source. Also are described specialized switching power supplies to power the LEDs. The aim of this work is the design, realization and comparison of linear power supply, switching source assembled with the TL494 and integrated switchied current source TPS92513.
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Draft sources 1000A AC current sensors for calibration
Klimeš, Jan ; Vetiška, Vojtěch (referee) ; Dohnal, Petr (advisor)
This bachelor thesis deals with design and construction of device for precise measurement of 1000 A alternate current. This thesis theoretically discusses the possibilities of conventional solutions, such as current transformers, as well as modern methods in the form of current sensors. The output of this thesis is a solution of problems with accuracy and discussion of other possible ways to reduce systematic error. The thesis discusses structure of the current transformer, the digitalizing of the signal and its usage as an input for engineering units. The device is then tested for final accuracy.
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