Piezoactuator e.g. for valve, has multilayer structure of piezo layers and electrodes, and defined area of internal electrode removed near contacting part on piezo layers with no internal electrode to be contacted

摘要

The piezoactuator has a multilayer structure of piezo layers (2) and intermediate internal electrodes (3,4) and alternating connection of the internal and external (5,6) electrodes on one side of the actuator. A defined area of the internal electrode removed near the contacting part on piezo layers with no internal electrode to be contacted extends over a defined distance to the contact applied to the other piezo layer.