|
|
Design and properties of low-frequency amplifier with vacuum valves
Piroha, Ladislav ; Musil, Vladislav (referee) ; Šandera, Josef (advisor)
The purpose of the bachelor’s thesis is explanation of theory and construction of low frequency tube audio amplifier with UV meter. Main focus is on history and development of vacuum circuits from its early beginning, on electrical parameters and applied physical principles. Explanation of operating characteristics of amplifier classes and comparison of vacuum tube sound acoustic performance against transistor amplifier one. Finally, there is build description of single ended amplifier class A.
|
|
|
Hybrid microphone preamplifier with variable selection of amplifier technology
Musil, Tomáš ; Levek, Vladimír (referee) ; Háze, Jiří (advisor)
This diploma thesis deals with a basic description of dynamic and condenser microphone, its performance regarding polar patterns and a type of mechanical construction. It also describes a principle of operation of a triode. The thesis deals with selecting of a suitable type of microprocessor to control microphone preamplifier functions. Last part contains a power supply and microphone preamplifier circuits design using a semiconductor and vacuum tube technology.
|
|
|
Vacuum tube audio amplifier
Hrubý, Ondřej ; Šandera, Josef (referee) ; Musil, Tomáš (advisor)
This bachelor´s thesis deals with a design and simulation of an audio power amplifier using vacuum tubes to process a phono level signal. The frequency response of suggested solution should comply with the norm specified by RIAA. It also describes a principle of usage a magnetodynamic pick-up, reproduction quality requirements, vacuum tube basic description and also its advantages for audio applications usage. Last part contains a comparison of the vacuum tube and semiconductor amplifier considering signal distortion of the active elements.
|
|
|
Vacuum tube headphone amplifier
Musil, Tomáš ; Kledrowetz, Vilém (referee) ; Háze, Jiří (advisor)
This Bachelor’s thesis deals with design and realization of vacuum tube headphone amplifier working in class A. There is a closer look into operating principals of vacuum tube, most common types, basic ways to use it in electronic circuit, designing stabilized power supplies and also realization of functional prototype and measuring it’s parameters.
|
|
|
Valve amplifier for guitar
Hrabaň, Václav ; Šotner, Roman (referee) ; Brančík, Lubomír (advisor)
Bachelor thesis deals with design, simulation and construction of guitar amplifier circuit with valves as active devices. Thesis describes in detail one of possible conceptions of a two channel amplifier with switching of clean and overdrive channel. Design contains input amplifier, two switchable preamplifiers, inverter, power amplifier, switching circuit and supply unit. Preamplifiers contain each their own frequency filter and regulation of gain and volume. Power amplifier works in class AB and its power is 40 W.
|
|
|
Hybrid Microphone Preamplifier With Variable
Selection Of Amplifier Technology
Musil, Tomáš
This paper deals with the design of a studio level hybrid microphone pre-amplifier using a vacuum tube and semiconductor technology. The pre-amplifier circuit also contains an analog VU meter, 48 V phantom power supply, variable high pass filter, phase inverter switch and adjustable stage input impedance. This paper also deals with the design of a multi-voltage power supply unit and microprocessor controller unit ensuring completely automatic amplifier functions. The end of the paper is dedicated to a characteristics measurement determining its parameters.
|
|
|
Vacuum tube audio amplifier
Hrubý, Ondřej ; Šandera, Josef (referee) ; Musil, Tomáš (advisor)
This bachelor´s thesis deals with a design and simulation of an audio power amplifier using vacuum tubes to process a phono level signal. The frequency response of suggested solution should comply with the norm specified by RIAA. It also describes a principle of usage a magnetodynamic pick-up, reproduction quality requirements, vacuum tube basic description and also its advantages for audio applications usage. Last part contains a comparison of the vacuum tube and semiconductor amplifier considering signal distortion of the active elements.
|
|
|
Hybrid microphone preamplifier with variable selection of amplifier technology
Musil, Tomáš ; Levek, Vladimír (referee) ; Háze, Jiří (advisor)
This diploma thesis deals with a basic description of dynamic and condenser microphone, its performance regarding polar patterns and a type of mechanical construction. It also describes a principle of operation of a triode. The thesis deals with selecting of a suitable type of microprocessor to control microphone preamplifier functions. Last part contains a power supply and microphone preamplifier circuits design using a semiconductor and vacuum tube technology.
|
|
|
Tube microphone preamplifier
Čacký, Adam ; Hruboš, Zdeněk (referee) ; Brančík, Lubomír (advisor)
The theme of the master´s thesis is design a microphone preamplifier which uses vacuum tube as a main amplifying element. Part of the work is theoretical assumptions for the optimal design and implementation of peripheral involvement, comparing the properties of components used and the resulting parameters of modeled device. The thesis also includes a proposal of the source unit for supplying all parts of the preamplifier. The results are accompanied by circuit simulations and laboratory measurements of the main parameters of the designed device.
|
|
|
Design and properties of low-frequency amplifier with vacuum valves
Piroha, Ladislav ; Musil, Vladislav (referee) ; Šandera, Josef (advisor)
The purpose of the bachelor’s thesis is explanation of theory and construction of low frequency tube audio amplifier with UV meter. Main focus is on history and development of vacuum circuits from its early beginning, on electrical parameters and applied physical principles. Explanation of operating characteristics of amplifier classes and comparison of vacuum tube sound acoustic performance against transistor amplifier one. Finally, there is build description of single ended amplifier class A.
|
guest ::
