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D class audio-amplifier with digital and remote control
Petrgál, Filip ; Kovář, Jan (referee) ; Šotner, Roman (advisor)
The contents of this thesis is design of audio power amplifier in Class D with fully digital control and remote control and is divided into two parts . The first part is devoted to the basic principles and theory of key elements of the entire amplifier. The second part consists of a complete description of the design and construction of a power amplifier, digital control with remote control, a spectrum analyzer, equalizer, preamp VU meters and complete power supply. Each proposal contains a detailed analysis of the solutions supported by simulations and software. For individual parts have been completely measured p arameters.
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Audio amplifier for detecting wood-destroying pests
Jaroš, Ondřej ; Křepelka, Pavel (referee) ; Friedl, Martin (advisor)
This bachelor´s thesis is focused on design of detector of wood-destroying pests, which is solved by using an acoustic sound source with piezo electric element as a sensor. The acquired signal is step by step amplified to a level when we can observe the audio spectrum using a headphone. The realized audio amplifier is complemented supplemented by an active analog filter for the ability to listen to a narrower frequency spectrum. The next feature of the detector is that it displays the frequency spectrum on an LCD display ranging from 0 Hz to 10 kHz. The spectrum of the signal is acquired by using DFT transformation. Analysis of the device is firstly described from the theoretical part through the realized design. At the end of document the results are summarized.
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Audio amplifier for detecting wood-destroying pests
Jaroš, Ondřej ; Křepelka, Pavel (referee) ; Friedl, Martin (advisor)
This bachelor´s thesis is focused on design of detector of wood-destroying pests, which is solved by using an acoustic sound source with piezo electric element as a sensor. The acquired signal is step by step amplified to a level when we can observe the audio spectrum using a headphone. The realized audio amplifier is complemented supplemented by an active analog filter for the ability to listen to a narrower frequency spectrum. The next feature of the detector is that it displays the frequency spectrum on an LCD display ranging from 0 Hz to 10 kHz. The spectrum of the signal is acquired by using DFT transformation. Analysis of the device is firstly described from the theoretical part through the realized design. At the end of document the results are summarized.
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D class audio-amplifier with digital and remote control
Petrgál, Filip ; Kovář, Jan (referee) ; Šotner, Roman (advisor)
The contents of this thesis is design of audio power amplifier in Class D with fully digital control and remote control and is divided into two parts . The first part is devoted to the basic principles and theory of key elements of the entire amplifier. The second part consists of a complete description of the design and construction of a power amplifier, digital control with remote control, a spectrum analyzer, equalizer, preamp VU meters and complete power supply. Each proposal contains a detailed analysis of the solutions supported by simulations and software. For individual parts have been completely measured p arameters.
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