Power Parameters and Efficiency of Class B Audio Amplifiers in Real-World Scenario

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dc.contributor.authorZhivomirov, Hristo
dc.contributor.authorKostov, Nikolay
dc.coverage.issue1cs
dc.coverage.volume26cs
dc.date.accessioned2017-04-18T08:21:45Z
dc.date.available2017-04-18T08:21:45Z
dc.date.issued2017-04cs
dc.description.abstractConsumer audio amplifiers are intended to op¬erate with various loudspeaker loads, i.e. the load imped¬ance profile of the audio amplifier is a priori unknown. We propose the power parameters analysis of the class B audio amplifiers to be carried out in the realistic worst-case (RWC) scenario of operation with the minimal value of the impedance and a RWC type of signal, instead of the nominal impedance of the loudspeaker and a sine-wave signal. Experimental validation, carried out for different types of signals and loudspeaker loads, demonstrate the advantages of the proposed RWC-based power parameters estimation. Furthermore, we provide a way of assessing the safe-operating area (SOA) boundaries, based on the output I-V loci of the amplifier and by means of an equi¬valent load line (ELL).en
dc.formattextcs
dc.format.extent258-262cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2017 vol. 26, č. 1, s. 258-262. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2017.0258en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/64731
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2017/17_01_0258_0262.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectAudioen
dc.subjectclass B amplifieren
dc.subjectpower parametersen
dc.subjectestimationen
dc.subjectrealistic worst-case scenarioen
dc.titlePower Parameters and Efficiency of Class B Audio Amplifiers in Real-World Scenarioen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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