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Title:Audio ojačevalnik AB razreda z digitalnim krmiljenjem
Authors:ID Mikanović, Đorđe (Author)
ID Solar, Mitja (Mentor) More about this mentor... New window
Files:.pdf VS_Mikanovic_Dorde_2024.pdf (4,06 MB)
MD5: AFBF695593ED4C78E718CA898E43FEEF
 
.zip VS_Mikanovic_Dorde_2023.zip (444,23 KB)
MD5: 15F1739CD3AE2C0EDBD6E00966A4AFE4
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V diplomski nalogi smo temeljito raziskali teoretično podlago ojačevalnikov ter jo nadgradili z lastnim raziskovalnim delom. Zasnovali, naredili in preizkusili smo audio ojačevalnik razreda AB. Naša pozornost ni bila osredotočena zgolj na ojačevalnik, temveč smo se posvetili tudi napajalnemu delu ter upravljanju naprave prek občutljivega LCD zaslona. Izdelali smo vezje, ki deluje kot ojačevalnik, sposoben ojačiti signale v območju od 20 Hz do 20 kHz, torej frekvenčni pas signalov, ki jih človeško uho lahko teoretično zazna. Pri tem nismo pozabili na ustrezno napajanje, saj je kakovostno napajanje ključno za kakovostno delovanje ojačevalnika. Za optimizacijo uporabniške izkušnje smo vključili LCD zaslon na dotik, ki omogoča enostavno prilagajanje naprave človekovim potrebam. Pri izgradnji ojačevalnika smo za osnovno vezje izbrali čip TDA7294. Hkrati smo skrbno oblikovali napajalni del, da zagotovimo stabilno in učinkovito delovanje. Za upravljanje celotne naprave smo uporabili mikrokrmilnik STM32F750. Pravilnost delovanja izdelanih vezij smo preverili z uporabo raznolikih vhodnih signalov. S pomočjo osciloskopa smo izvedli meritve ter jih primerjali s pričakovanimi vrednostmi.
Keywords:ojačevalnik, LCD, napajanje
Place of publishing:Maribor
Year of publishing:2023
PID:20.500.12556/DKUM-86523-292d0144-35c6-810c-e75b-a949de0f3814 New window
Publication date in DKUM:06.02.2024
Views:147
Downloads:22
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FERI
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Licences

License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-nc-sa/4.0/
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.
Licensing start date:07.12.2023

Secondary language

Language:English
Title:Class AB audio amplifier with digital control
Abstract:In our thesis, we thoroughly explored the theoretical foundation of amplifiers and enhanced it with our own research work. We designed, created, tested, and precisely evaluated an AB class audio amplifier. Our focus wasn't solely on the amplifier; we also dedicated ourselves to the power supply section and the control of the device through a responsive touch-sensitive LCD screen. We developed a circuit that functions as an amplifier, capable of amplifying signals in the range of 20 Hz to 20 kHz – precisely those frequencies that the human ear can theoretically perceive. In doing so, we didn't overlook the importance of proper power supply, as high-quality powering is essential for the amplifier's optimal performance. To enhance the user experience, we incorporated a touch-sensitive LCD screen for easy customization of the device according to individual needs. For the amplifier's construction, we chose the TDA7294 chip as the core component of the basic circuit. Concurrently, we meticulously designed the power supply section to ensure stable and efficient operation. To manage the entire device, we turned to a microcontroller from the STM32F750 family. The correctness of the functioning of the developed circuits was verified using a variety of input signals. Through precise measurements conducted with an oscilloscope, we compared the results with the expected values.
Keywords:amplifier, LCD, supply


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