Patent ID: 8238586

Claim:
A thermoacoustic device, the thermoacoustic device comprising: a sound wave generator, the sound wave generator comprises a carbon nanotube structure; a plurality of first electrodes electrically connected with each other; a plurality of second electrodes electrically connected with each other, the plurality of second electrodes and the plurality of first electrodes are separately connected to the sound wave generator, the plurality of second electrodes and the plurality of first electrodes are parallel to each other and are alternately arranged at uniform intervals; wherein a working voltage applied to the first and second electrodes is less than or equal to about 50 volts, and the sound wave generator and the first and second electrodes satisfy a formula consisting of 1 ⁢ Ω ≤ R 1 ( n - 1 ) 2 ≤ 125 ⁢ Ω , wherein R 1 represents a resistance of the sound wave generator in the direction from the plurality of first electrodes to the plurality of second electrodes, and n represents a sum of the total number of the first electrodes and the second electrodes added together.