Piezoelectric transducer for bridge of strained instrument

The utility model provides a piezoelectric transducer (213) for a bridge (120) of a stringed instrument, belonging to the field of the muffle guitar, comprising a piezoelectric element (113a) with the approximately long rectangular shape, a couple of electrodes (113b) which are connected respectively with the upper surface and the lower surface of the piezoelectric element, and insulating layers (113c) used for the insulating electrodes which are coated with electric protections (113d) (for example, a polymer piezoelectric thin film). The thin metal sheet (213e) is glued to at least an outer part of the upper surface of a protective coating and comprises a designated metal, and the metal can be selected from the copper, the gold and the platinum, or the thin metal sheet comprises a designated alloy composed of one of the copper, the gold and the platinum. The thin metal sheet can be glued on the electric protection by using a non-induration adhesive whose thickness can be 10 mu m or can be lesser.