Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings of 139th International Audio Engineering Society (AES) Convention |
| Number of pages | 10 |
| Publisher | Audio Engineering Society |
| Publication date | 2015 |
| Article number | 9378 |
| Publication status | Published - 2015 |
| Event | 139th International Audio Engineering Society (AES) Convention - The Jacob Javits Center, New York City, United States Duration: 29 Oct 2015 → 1 Nov 2015 http://www.aes.org/events/139/ |
Conference
| Conference | 139th International Audio Engineering Society (AES) Convention |
|---|---|
| Location | The Jacob Javits Center |
| Country | United States |
| City | New York City |
| Period | 29/10/2015 → 01/11/2015 |
| Internet address |
Cite this
}
Self-Oscillating 150 W Switch-Mode Amplifier Equipped with eGaN-FETs. / Duraij, Martijn; Iversen, Niels Elkjær; Petersen, Lars Press; Boström, Patrik.
Proceedings of 139th International Audio Engineering Society (AES) Convention. Audio Engineering Society, 2015. 9378.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
TY - GEN
T1 - Self-Oscillating 150 W Switch-Mode Amplifier Equipped with eGaN-FETs
AU - Duraij, Martijn
AU - Iversen, Niels Elkjær
AU - Petersen, Lars Press
AU - Boström, Patrik
PY - 2015
Y1 - 2015
N2 - This paper discusses the effect of flux modulation in the electrodynamic loudspeaker with main focus on the effect on the force factor. A measurement setup to measure the AC flux modulation with static voice coil is explained and the measurements shows good consistency with FEA simulations. Measurements of the generated AC flux modulation shows, that eddy currents are the main source to magnetic losses in form of phase lag and amplitude changes. Use of a copper cap shows a decrease in flux modulation amplitude at the expense of increased power losses. Finally, simulations show that there is a high dependency between the generated AC flux modulation from the voice coil and the AC force factor change.
AB - This paper discusses the effect of flux modulation in the electrodynamic loudspeaker with main focus on the effect on the force factor. A measurement setup to measure the AC flux modulation with static voice coil is explained and the measurements shows good consistency with FEA simulations. Measurements of the generated AC flux modulation shows, that eddy currents are the main source to magnetic losses in form of phase lag and amplitude changes. Use of a copper cap shows a decrease in flux modulation amplitude at the expense of increased power losses. Finally, simulations show that there is a high dependency between the generated AC flux modulation from the voice coil and the AC force factor change.
M3 - Article in proceedings
BT - Proceedings of 139th International Audio Engineering Society (AES) Convention
PB - Audio Engineering Society
ER -