Patent ID: 8506105

Claim:
An apparatus, comprising: at least one electronic component; an enclosure enclosing the at least one electronic component, the enclosure including at least one wall defined by a membrane; an electromechanical transducer, wherein the electromechanical transducer comprises: a first piezoelectric actuator, a first end of which is fixed and a second end of which is rigidly attached to a first end of the membrane; and a second piezoelectric actuator, a first end of which is fixed and a second end of which is rigidly attached to a second end of the membrane, wherein application of alternating current to the first and second piezoelectric actuators generates a pulsating mechanical deformation of the membrane; and one or more openings in the enclosure for facilitating volume displacement of air from within the enclosure, wherein the volume displacement of air is provided by the pulsating mechanical deformation of the membrane.