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Design and realization of an active subwoofer
Hrdina, Robin ; Kledrowetz, Vilém (referee) ; Šteffan, Pavel (advisor)
This bachelor thesis describes the design and construction of a one-channel amplifier 200 W into 8 load for an active subwoofer. The design consists of an active correction preamplifier and output stage. Preamplifier is created of integrated operational amplifiers and is controlled by two potentiometers, input switch and phase switch. Output stage is created of integrated circuits LM3886T by Texas Instruments. Both stages were constructed on PCBs and were measured their parameters.
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Construction of class T audio amplifier
Tejmlová, Lenka ; Slezák, Josef (referee) ; Petržela, Jiří (advisor)
The aim of my bachelor’s thesis is to collect information about amplifiers, working in the T class. Because these amplifiers are usually used as digital power processing audio amplifiers, we mostly insist on the ability of sending, the signal without distortion, to amplify the frequency broadband signal, to obtain the high efficiency of the output stages and to obtain the peak quality of the sound. My task is to gather information and facts of principle of the function of the audio amplifiers working in the T class and reasonably priced integrated circuits of this class. Furthermore I am going to focus on the design of wiring of this amplifier with the 2x20 watts output, including the correction pre-amplifier, which provides correction of the heights, basses and volume. The amplifier is realized, in the end of bachelor’s thesis, there are measured it’s characteristics, which are compared to theory.
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Vacuum tube phono amplifier
Hrubý, Ondřej ; Novák, Lukáš (referee) ; Musil, Tomáš (advisor)
This master´s thesis deals with a design and simulation of an audio power phono amplifier using vakuum tubes. The frequency response of suggested solution should comply with the norm specified by RIAA. It also describes a vacuum tube basic description and also its advantages for audio applications and principle of usage a magnetodynamic pick-up. Last part contains a design of microprocessor system and power supply.
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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 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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Audio power amplifier 2 x 50 W
Skalický, Pavel ; Šotner, Roman (referee) ; Kratochvíl, Tomáš (advisor)
The topic of my bachelor´s theis is design of class AB audio power amplifier 2 x 50 W/4 with preamplifier and stereo output. The design is standard solution of stereophonic version of power amplifier, with monolithic integrated circuit 2 x LM 3886. The project deals also with preamplifier with integrated circuit LM 1036, calculation of heat sink of power circuits and solution of supply. The aim of this bachelor´s project was make complete design of laboratory prototype (scheme, layout of printed circuit, part list and placemnet, amplifier arrangement), realisation function of prototype and laboratory measurements.
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Switched four-channel car amplifier
Lev, Lukáš ; Kratochvíl, Tomáš (referee) ; Brančík, Lubomír (advisor)
The topic of this semester project is the design quadraphonic car-amplifier switching concepts with a minimum output power 4x50W, with correction preamplifier and appropriate power source. This amplifier is realized by using a power amplifier in class D integrated circuit TAS5630, preamplifier MAX5486 and increasing DC / DC converter LTC3862.
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Design and construction of audio amplifier with advanced functions
Polkorab, Jaroslav ; Šotner, Roman (referee) ; Brančík, Lubomír (advisor)
This bachelor's thesis focuses on the design of a low frequency class-D amplifier with the minimum output power of 2x50 W. This amplifier will be used for personal use as a HiFi system with advanced features. The design focuses on an encoder controlled preamplifier with an IR remote control, a power amplifier and a switching mode power supply. The PSpice program was selected for the circuit simulation. The schematic designs are created in Easyeda, KiCad and PSpice.
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Vacuum tube phono amplifier
Hrubý, Ondřej ; Novák, Lukáš (referee) ; Musil, Tomáš (advisor)
This master´s thesis deals with a design and simulation of an audio power phono amplifier using vakuum tubes. The frequency response of suggested solution should comply with the norm specified by RIAA. It also describes a vacuum tube basic description and also its advantages for audio applications and principle of usage a magnetodynamic pick-up. Last part contains a design of microprocessor system and power supply.
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