Micro speaker with capacitors formed by conductive segmented diaphragm and pole plate
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United States of America Patent
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Jan 9, 2018
Issued Date -
N/A
app pub date -
Jan 29, 2016
filing date -
Jul 9, 2015
priority date (Note) -
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Abstract
A micro speaker is disclosed. The micro speaker includes a vibration system including a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome and a suspension surrounding the conductive dome; a magnetic circuit system including a lower plate, a first magnetic part on the lower plate, a second magnetic part on the lower plate, a pole plate attached to the first magnetic part, one of the first and second magnetic part being a permanent magnet for forming a magnetic gap. The conductive dome includes a number of units for forming capacitors together with the pole plate for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement of the diaphragm.
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