Opens in a new tab

AES E-Library

← Back to search

Journal Article

The 48-Volt Phantom Menace Returns

Authors: Bortoni, Rosalfonso; Kirkwood, Wayne

Journal of the Audio Engineering Society · Volume 58 · Issue 3 · pp. 197–213 · March 2010

Abstract

[Feature] In a paper presented at the 110th AES Convention, Hebert and Thomas described the “phantom menace,” wherein phantom power faults can damage audio input circuitry. Their approach focused on the analysis of a “common-mode fault” occurring at the microphone preamplifier inputs, which was described as a “fault at both inputs, simultaneously.” However, this is not the only fault condition that can occur. New fault mechanisms are considered in this paper, and we show that commonly used protection schemes for popular integrated microphone preamplifiers do not always protect the preamplifiers as expected.

Details

Publication
Journal of the Audio Engineering Society
Volume
58
Issue
3
Pages
197–213
Publication date
March 6, 2010
Affiliation
THAT Corporation, Milford, MA, USA (See document for exact affiliation information.)
Type
Journal Article