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Convention Paper

Direct Current Offset and Balance for Audio Transformers Used with Paralleled Tubes or Solid State Devices

Authors: Polisois, Aristide; Touzelet, Pierre

AES Convention 122 · Paper 7151 · May 2007

Abstract

In May 2005 (118th AES Convention), I described a self compensated transformer for Single ended Audio amplifiers, designed as SC-OPT and based on the principle that an auxiliary winding (tertiary) crossed by the same current as the primary, opposes a magnetic flux that reduces the overall flux, produced by the DC, to almost zero.
In this paper, an extension is discussed where no external adjustment is needed to balance the DC flux inside the core to zero. The new transformer is fully self-auto balancing.

Details

Published in
AES Convention 122
AES Convention
122
Paper number
7151
Publication date
May 6, 2007
Session subject
Instrumentation and Measurement
Affiliation
S.E.R.E.M.E. S.A. (See document for exact affiliation information.)
Type
Convention Paper