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Convention Paper

Driving Electrostatic Transducers

Authors: Nielsen, Dennis; Knott, Arnold; Andersen, Michael A. E.

AES Convention 134 · Paper 8845 · May 2013

Abstract

Electrostatic transducers represent a very interesting alternative to the traditional inefficient electrodynamic transducers. In order to establish the full potential of these transducers, power amplifiers that fulfill the strict requirements imposed by such loads (high impedance, frequency depended load, and high bias voltage for linearization) must be developed. This paper analyzes power stages and bias configurations suitable for driving an electrostatic transducer. Measurement results of a ± 300 V prototype amplifier are shown. Measuring THD across a high impedance source is discussed and a high voltage attenuation interface for an audio analyzer is presented. THD below 0:1% is reported.

Details

Published in
AES Convention 134
AES Convention
134
Paper number
8845
Publication date
May 6, 2013
Session subject
Transducers
Affiliation
Technical University of Denmark, Kgs. Lyngby, Denmark (See document for exact affiliation information.)
Type
Convention Paper