AES E-Library

H. Dymond, and P. Mellor, "An Active Load and Test Method for Evaluating the Efficiency of Audio Power Amplifiers," Paper 7572, (2008 October.). doi: H. Dymond, and P. Mellor, "An Active Load and Test Method for Evaluating the Efficiency of Audio Power Amplifiers," Paper 7572, (2008 October.). doi:
Abstract: This paper presents the design, implementation and use of an “active load” for audio power amplifier efficiency testing. The active load can simulate linear complex loads representative of real-world amplifier operation with a load modulus between 4 and 50 ohms inclusive, load phase-angles between −60° and +60° inclusive, and operates from 20 to 20,000 Hz. The active load allows for the development of an automated test procedure for evaluating the efficiency of an audio power amplifier across a range of output voltage amplitudes, load configurations and output signal frequencies. The results of testing a class-B and a class-D amplifier, each rated at 100 watts into 8 ohms are presented.

@article{dymond2008an,
author={dymond, harry and mellor, phil},
journal={journal of the audio engineering society},
title={an active load and test method for evaluating the efficiency of audio power amplifiers},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},} @article{dymond2008an,
author={dymond, harry and mellor, phil},
journal={journal of the audio engineering society},
title={an active load and test method for evaluating the efficiency of audio power amplifiers},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={this paper presents the design, implementation and use of an “active load” for audio power amplifier efficiency testing. the active load can simulate linear complex loads representative of real-world amplifier operation with a load modulus between 4 and 50 ohms inclusive, load phase-angles between −60° and +60° inclusive, and operates from 20 to 20,000 hz. the active load allows for the development of an automated test procedure for evaluating the efficiency of an audio power amplifier across a range of output voltage amplitudes, load configurations and output signal frequencies. the results of testing a class-b and a class-d amplifier, each rated at 100 watts into 8 ohms are presented.},}

TY - paper
TI - An Active Load and Test Method for Evaluating the Efficiency of Audio Power Amplifiers
SP - EP -
AU - Dymond, Harry
AU - Mellor, Phil
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008 TY - paper
TI - An Active Load and Test Method for Evaluating the Efficiency of Audio Power Amplifiers
SP - EP -
AU - Dymond, Harry
AU - Mellor, Phil
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008
AB - This paper presents the design, implementation and use of an “active load” for audio power amplifier efficiency testing. The active load can simulate linear complex loads representative of real-world amplifier operation with a load modulus between 4 and 50 ohms inclusive, load phase-angles between −60° and +60° inclusive, and operates from 20 to 20,000 Hz. The active load allows for the development of an automated test procedure for evaluating the efficiency of an audio power amplifier across a range of output voltage amplitudes, load configurations and output signal frequencies. The results of testing a class-B and a class-D amplifier, each rated at 100 watts into 8 ohms are presented.