Patent ID: 8113059

Claim:
A circuit module, comprising: a substrate on or in which at least one component is mounted; a piezoelement which has at least one clamping region and at least one oscillatory region, the piezoelement being clamped in clamping region on one of the substrate, or on an arrangement secured to the substrate, and the at least one oscillatory region being accommodated in a manner that permits oscillation, the piezoelement including contacts to tap off a piezoelectric voltage; and a current-supply circuit which receives the piezoelectric voltage generated by the piezoelement and is used as a voltage source to supply power to the circuit module; wherein a middle region of the piezoelement is clamped as the clamping region, and lateral outer end regions of the piezoelement are accommodated in a manner which allows the lateral outer end regions to oscillate freely as oscillatory regions; wherein electrically conductive layers are applied to the clamping region of the piezoelement as the contacts to tap off the generated piezoelectric voltage, and wherein the contacts form a mechanical connection of the piezoelement with the substrate at the clamping region.