The 48-Volt Phantom Menace

Thomas F, Hebert G. The 48-Volt Phantom Menace. In: AES Convention 110. Audio Engineering Society; 2001. Paper 5335. Available from: https://aes.org/publications/elibrary-page/?id=10028

@inproceedings{Thomas2001_10028,
  author = {Thomas, Frank and Hebert, Gary},
  title = {{The 48-Volt Phantom Menace}},
  booktitle = {AES Convention 110},
  note = {Paper 5335},
  year = {2001},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=10028}
}

TY  - CPAPER
TI  - The 48-Volt Phantom Menace
AU  - Thomas, Frank
AU  - Hebert, Gary
T2  - AES Convention 110
M1  - Paper 5335
PY  - 2001
DA  - 2001/05/06
UR  - https://aes.org/publications/elibrary-page/?id=10028
PB  - Audio Engineering Society
LA  - en
AB  - The authors encountered anecdotal evidence suggesting that field failures of existing line driver and microphone preamplifier integrated circuits (ICs) were correlated with accidental connections between line outputs and microphone inputs with phantom power applied. Analysis showed that the most probable mechanism was large currents flowing as a result of rapid discharge of the high-valued ac-coupling capacitors. Commonly used protection schemes are measured, analyzed, and shown to be lacking. More robust schemes that address these shortcomings are presented. It is concluded that the small additional cost of these more robust protection schemes is likely outweighed by the reduction in field failures and their associated repair cost.
ER  -