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Audio pre-amplifier for two satellites and subwoofer
Štaud, Stanislav ; Brančík, Lubomír (referee) ; Kratochvíl, Tomáš (advisor)
The aim of this thesis was to design, simulate and construction audio pre-amplifier for two satellites and subwoofer and monolithic amplifier for subwoofer in the class AB. Audio pre-amplifier provides bass, treble and switch loudness volume control. It includes subsonic filter and active crossovers Sallen-Key with approximation Linkwitz-Riley. There are low noise operating amplifiers LM833 and TL081 at the place of active amplifiers with very low distortion. End-amplifier can delivers power 50 W to 4 ohms. Of consists delayed switch speaker and supports security against direct voltage on the output of amplifier.
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Class AB audio amplifier for two satellites and subwoofer
Cupák, Jan ; Brančík, Lubomír (referee) ; Kratochvíl, Tomáš (advisor)
This bachelor’s thesis deals with design of AB class audio amplifiers. Further more it deals also with other functional blocks, e.g. preamplifier, tone equalizer and active crossover. Outcome of this work is a complete solution of the amplifier with it's simulation. In final solution is also included scheme of a high quality power supply unit, speaker protection and heat sinks for high performance transistors. In this project is also included a solution of task about optimal mechanical arrangement of the single parts in the case of this amplifier. This thesis contains results of measurement and photo document of functional prototype.
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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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Mixing console for audio signals
Špaček, Jan ; Schimmel, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
Bachelor's thesis on the theme "Mixing console audio signals" deals with the design of mixing console for mixing audio signals from several audio inputs. After a theoretical introduction to general issues and configuration mixing consoles the block diagram and then the full circuit diagram of a custom solution mixing console is proposed, whose configuration is as follows: Two mono inputs, designed as a switchable, where you can bring the microphone or line signal levels. They are equipped with a microphone preamp and attenuation articles, tri-band equalizers, panoramas and level controllers (faders). In addition, two stereo inputs, specifically designed for line level signals. They are equipped with line-preamp, panoramas and level controllers. Output signals of all input units correspond to a regular line level. On the main bus is then equipped stereo band equalizer, line output and headphone output. Bachelor's thesis comprises a technical documentation to implement functional prototype of the console, including the experimentally measured values.
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Class-AB stereo audio power amplifier
Chmelík, Šimon ; Šotner, Roman (referee) ; Brančík, Lubomír (advisor)
This bachelor thesis deals with design of low-frequency power amplifier working in AB class, including correction preamplifier and a suitable power source. The amplifier is designed to be feasible from commonly available components. The result is the overall design of power amplifier with preamplifier and power supply and measuring their parameters.
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Design and construction of the audio power amplifier
Malina, Vítězslav ; Brančík, Lubomír (referee) ; Hruboš, Zdeněk (advisor)
In this bachelor's thesis, I explore the design of complete audio performance amplifiers in stereo and the output power of 2x75W. Amplifier contains the switching between microphone and line input, correction pre-amplifier with output to headphones and power amplifier with output switching options. The purpose of this thesis is the design of circuit and computer simulation of individual parts of the amplifiers, PCB design and bulid amplifiers.
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Class-AB stereo audio power amplifier
Chmelík, Šimon ; Šotner, Roman (referee) ; Brančík, Lubomír (advisor)
This bachelor thesis deals with design of low-frequency power amplifier working in AB class, including correction preamplifier and a suitable power source. The amplifier is designed to be feasible from commonly available components. The result is the overall design of power amplifier with preamplifier and power supply and measuring their parameters.
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Design and construction of the audio power amplifier
Malina, Vítězslav ; Brančík, Lubomír (referee) ; Hruboš, Zdeněk (advisor)
In this bachelor's thesis, I explore the design of complete audio performance amplifiers in stereo and the output power of 2x75W. Amplifier contains the switching between microphone and line input, correction pre-amplifier with output to headphones and power amplifier with output switching options. The purpose of this thesis is the design of circuit and computer simulation of individual parts of the amplifiers, PCB design and bulid amplifiers.
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