Diskretno izvedeno pojačalo snage u D klasi

undergraduate thesis

• Title (english): A discrete D-class power amplifier
• Author: Marko Maršić
• Mentor: Igor Krois (mentor)
• Committee member: Igor Krois (predsjednik povjerenstva)
• Committee member: Adrijan Barić (član povjerenstva)
• Committee member: Željko Osrečki (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2020-08-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Usporedba topologija audio pojačala i njihove efikasnosti. Projektiranje generatora trokutastog signala. Projektiranje pojačala D klase izlazne snage 0,5W uz asimetrično napajanje od 5V. Projektiranje pulsno-širinskog modulatora s povratnom vezom. Projektiranje izlaznog stupnja korištenjem MOSFET tranzistora. Kompenzacija struje probijanja polovičnog H mosta uz pomoć sklopa za generiranje mrtvog vremena. Rekonstrukcija audio signala filtriranjem PWM signala niskopropusnim LC filterom 2. reda. Usporedba proračuna i izmjerenih parametara.

Abstract (english)

Comparison of audio amplifier topologies and their respective efficiencies. Designing a 0.5W D-class power amplifier with an asymmetric 5V power supply. Designing a triangle wave oscillator. Designing an analog pulse-width modulator with feedback. Designing a output stage using MOSFET transistors. Compensating half H-bridge shoot-through current using a dead time generator circuit. Reconstructing an audio signal from a PWM signal using a second order LC low-pass filter. Comparing calculations versus real world data.

• Keywords: pojačalo; D klasa; napajanje; pulsno-širinska modulacija; H most; MOSFET driver; mrtvo vrijeme; LC filter; zvuk
• Keywords (english): amplifier; D class; power supply; pulse-width modulation; H bridge; MOSFET driver; dead time; LC filter; audio
• Language: croatian
• URN:NBN: urn:nbn:hr:168:064680
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-01-14 09:27:53