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Design and realization stereophonic amplifier class D
Hradil, Jaroslav ; Háze, Jiří (referee) ; Pavlík, Michal (advisor)
The aim of this project is to design a class D stereo audio amplifier with output power of 2 x 50 W into 4 load with THD+N less than 10%. Project is divided into three parts. First part describes the principles of class D amplifiers, the second part contains actual design of amplifier and the last part presents the results of the measurements.
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Class D 2.1 audio amplifier for laboratory measurements
Děcká, Klára ; Polák, Ladislav (referee) ; Kratochvíl, Tomáš (advisor)
This semestral thesis deals with a draft and construction of the design of an class D audio amplifier with pulse width modulation. The resulting design consists of a supply protection, an active crossover and the output power stage itself. The amplifier is made in 2.1 configuration, the amplifier for mid/high audio frequency drives 2 × 30 W output into a 8 load, subwoofer drives 1 × 100 W into a 2 load. The control centre of the whole application is an integrated circuit TPA3116D2 by Texas Instruments company. The resulting audio amplifier will be used as a device for laboratory measurements.
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Audio amplifier with PWM for laboratory measurements
Lelek, Martin ; Dřínovský, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This paper describes about theoretical design of class D power amplifier. Amplifier is primarily intended for laboratory measurements, i.e. measuring of major parameters of amplifier operates in this class (frequency response, slew rate, aliasing etc.). Amplifier (oncoming laboratory module) uses PWM (Pulse Width Modulation) and is constructed from separate blocks for possibility of measuring key signals trough all the structure (triangle comparation wave, analog input signal, feedback signal, PWM signal from modulator, drivers and power transistors, output signal after recontruction filters). Laboratory module is determined for laboratory power supply of safe voltage and should be produce power of several tens of watts into usual load impedance.
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Class D stereo audio power amplifier
Kazelle, Kamil ; Dostál, Tomáš (referee) ; Brančík, Lubomír (advisor)
The content of this project is design of stereo audio amlifier working in class D with output power 2x20W. Project includes also a design of preamplifier and power supply. This project is divided into the four parts. In first part the theory and problems of amplifiers working in class D is resumed, in the second the designed circuits are dicussed, in the third the results of simulations in the program PSpice are presented and the last part of project describes the realization and presents the results of measurements.
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The design of Audio Amplifier
Schenk, David ; Bohrn, Marek (referee) ; Šteffan, Pavel (advisor)
The theme of my bachelor’s thesis is a design of audio amplifier for the reproduction signal from electric guitars. I decided to combine the advantages of tube preamp with the advantages of digital amplifiers. The work describesthe principle activity of selected involvement, includes the anode voltage filter simulation, analysis and measurement of input and output parameters and thein evaluation. Technical documentation for realization of the amplifier contains printed circuit board.
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Design of class D audio power amplifier for home use
Raba, Jaroslav ; Kratochvíl, Tomáš (referee) ; Brančík, Lubomír (advisor)
This thesis describes the design and construction of a complete audio power amplifier 2x100W of Class D. The proposal contains an active correction preamplifier unit, a power supply unit and indicator unit of the amplifier excitation. The power amplifier is composed of an integrated circuit TAS5611A from Texas Instruments. The correction preamplifier is controlled by four potentiometers. Excitation of the amplifier is displayed using LEDs. Basic parameters are measured and evaluated for all blocks of the amplifier.
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Digital audio amplifier
Tiller, Jakub ; Kratochvíl, Tomáš (referee) ; Dřínovský, Jiří (advisor)
The subject of bachelor thesis is the class-D power audio amplifiers. Their expansion is mainly caused by high efficiency and good audio parameters. The aim of this project is analysis of class-D amplifiers and measurement of the audio parameters. In consequence, there is the design of class-D apmlifier as laboratory equipment with possibility of digital gain controll. At the end of this thesis, there are designs of automatic measurment in VEE Pro environment. The laboratory exercise also introduced in this thesis.
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Simulation and implementation of the audio power amplifier
Svadbík, Pavel ; Kratochvíl, Tomáš (referee) ; Šotner, Roman (advisor)
This work deals with simulation and analysis of audio power amplifiers of various concepts and classes. The theoretical part presents the basic necessary knowledge of electrical concepts and principles necessary for mastery of issues that this work deals. For each simulated circuit are described the basic operating principles and evaluated the results of the analysis. Based on the results of the analysis is chosen circuit, which is experimentally realized and measurement. In conclusion discusses the parameters obtained by simulations and practical measurements, and are fully assessed characteristics realized amplifier.
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Laboratory module of class D amplifier with PWM modulation
Barcík, Peter ; Petržela, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This bachelor’s thesis describes basic functional blocks of class D audio amplifier. Project also discuss about design of module class D audio amplifier with PWM modulation. As this audio amplifier is going to be a laboratory module, it is necessary to divide design into designs of individual functional blocks. Finally project describes design of output LC filter which is also simulated in PSPICE program. This thesis include complete construction details. Measurement results are shown in standard protocol.
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Class D audio power amplifier
Kaláb, Lukáš ; Petržela, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This project aims on completed design and consequential realization of prototype of the class D audio power amplifier. Amplifier works for home listening and should power at 2 x 50 W. The machine contains finall degree, correcting pre-amplifier and power supply. The basis for realization of the design (connection diagram, design of printed connections boards, distribution and list of parts) are made in Eagle software. Mechanic configuration of all parts in the body of the amplifier is also part of the work.
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