Audio pojačala klasa A i klase B

undergraduate thesis

• Title (english): Class A and class B audio amplifiers
• Author: Karlo Abramović
• Mentor: Ivan Đurek (mentor)
• Committee member: Ivan Đurek (predsjednik povjerenstva)
• Committee member: Siniša Fajt (član povjerenstva)
• Committee member: Mia Suhanek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2017-07-10, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Cilj ovog rada bio je pobliže opisati rad audio pojačala snage, objasniti izvedbu ulaznog dijela pojačala, naponskog pojačala te izlaznog pojačala. Pokazati ulogu diferencijskog pojačala u ulaznom stupnju, kao i prednosti korištenja Darlingtonova spoja u stupnju naponskog pojačala. Pojačala na koja se posebno obratila pozornost su bila pojačala klase A i B. Provela se teoretska usporedba izobličenja i djelotvornosti među klasama te su se na kraju provela mjerenja na standardnom pojačalu klase B. Rezultati su prikazani u obliku grafova, generiranih pomoću programa ''Audio precision'', dok se za izradu korištenih shema koristio Altium Designer 17.

Abstract (english)

The purpose of this thesis was to describe the main characteristics of the audio power amplifier. The thesis considered the input stage of the amplifier as it described the role of the differential amp. Also, the practice of using Darlington's configuration in the voltage amplifier stage. The accent was on power amplifiers in class A and B, as the thesis conducted the theoretical analysis of the amplifiers efficiency and distortion. Finally, the thesis presents mesurments that were taken on a standard B class audio amplifier in forms of graphs generated by the ''Audio precision'' software.

• Keywords: Audio pojačala; pojačala snage klase A; pojačala snage klase B; ulazno pojačalo; naponsko pojačalo; izlazno pojačalo; djelotvornost; izobličenja
• Keywords (english): Audio amplifiers; power amplifiers in class A; power amplifiers in class B; input stage; voltage amplifier; output stage; distortion; efficiency
• Language: croatian
• URN:NBN: urn:nbn:hr:168:315244
• 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: 2019-03-13 18:33:33