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Multiple Output Power Supply Module
For Space Applications
Hrubý, Lukáš
The purpose of this article is to describe design and implementation of multiple output power supply unit. Main goal is to create forward converter with cross-coupling of output lines, which would significantly increase the accuracy of output voltages under different load conditions. As almost every isolated DC-DC converter needs a transformer, there will be a short introduction on how to design and create one utilizing planar technology. For further puproses, this power supply will be designed with respect to requierements which are derived from ESA standards. Whole power unit will be fitted into box designed for mounting on spacecraft.
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DC-AC converter 12 V / 230 V for car applications
Jezerčák, Martin ; Šebesta, Jiří (referee) ; Brančík, Lubomír (advisor)
This work deals with a proposal for increasing DC/AC inverter for use in cars to power electronic devices on 230 V. This work is divided into two parts, theoretical and practical. It consists of three chapters. In the first chapter I developed a voltage converter, its breakdown, a breakdown by function, and the usage of individual connections. The proposal converter with the integrated circuit IR2153 is described in the second chapter. In the third chapter I processed readings and I visualized graphical dependencies of converter that was produced and purchased.
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Quadrophonic audio amplifier for home use
Gavlák, Antonín ; Kratochvíl, Tomáš (referee) ; Brančík, Lubomír (advisor)
This bachelor work describes the design quadraphonic audio amplifiers for home use that works in class AB. The proposal includes a correction preamplifier integrated circuit LM1036 and power amplifier monolithic integrated circuit LM3886 to the output impedance of 8 with appropriate cooling power element. The work also deals with suitable power supply units and soft start circuit for the amplifier. The work contains materials for the construction of a functional prototype of the low-frequency power amplifier and the results of laboratory measurements.
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Class H audio power amplifier design
Spáčil, Tomáš ; Šebesta, Jiří (referee) ; Dušek, Martin (advisor)
This bachelor´s thesis is dealing with a plan of a low frequency ending amplifier of class H that is made of discreet parts. Content of this work is an explanation of basic terms and classes of ending levels low frequency amplifiers. The ending level in class H is written in detail including its possible kinds of solution. The own solution of amplifier in class H is completed by simulation and areal connectors to individual parts. The aim of this work is a prototype of a final look of a device with record about measurement of its basic qualities and their evaluation.
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Design and construction of audio power amplifier
Růžička, Jaroslav ; Kratochvíl, Tomáš (referee) ; Brančík, Lubomír (advisor)
This bachelor’s thesis is concerned with amplifier classes, integration end-level, protective circuits and concrete concept of class AB power amplifier, including concept of preamplifier and power amplifier. Features of designed circuits were simulated in PSpice software. These individual concepts of modules are connected with DPS. This thesis contains results of measurement and photos of amplifier.
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Class D audio amplifier for active loudspeakers
Cupák, Jan ; Punčochář, Josef (referee) ; Kratochvíl, Tomáš (advisor)
This master's thesis deals with design of D class audio final amplifier, which was output power 400 W for 4 ? load impedance. Designed audio amplifier is specifical for active speaker, which consists of satelite speakers and subwoofer. Further more it deals also with other functional blocks, e.g. balanced input preamplifier, active crossover and protection for safety running. Outcome of this work are schemes of each functional blocks of D class audio amplifier, whose functionality was verified by simulation. Thesis also contains full reference material including mechanical arrangement of functional blocks on printed connection board. The conclusion contains the measured parameters of function blocks of produced prototype and complete photographic documentation.
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Laboratory Kit for Programmable Logic Demonstration
Svoboda, Stanislav ; Kubíček, Michal (referee) ; Kolouch, Jaromír (advisor)
This bachelor’s project deals with solutions of laboratory kit for teaching of work with CPLD curcuits which are made by company ALTERA. It is also including design of PCB - printed cirucit board and way of their realization. For construction is used circuit CPLD EPM 7064SLC44 made by ALTERA. Whole laboratory kit for Programable Logic Demonstration is designed as individual unit, which is capable to work as individual function. The kit can be amplified by connection of optional peripherals.
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Design and making of low-frequency power amplifier in class AB
Dušek, Martin ; Kratochvíl, Tomáš (referee) ; Brančík, Lubomír (advisor)
In this bachelor thesis I am occupied with low frequency amplifiers, theirs important parameters, classes and with integrations end-level. Next I am occupied with miscellaneous types of preamplifiers and additional circuits. There are simulated schemes of corrective preamplifier, protections scheme and high power amplifier in PSpice software in this thesis. These schemes and next additional modules are connected with DPS. This thesis contains result of measurement and photo functional sample.
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