Bistable piezoelectric generator

摘要

The invention concerns a piezoelectric bistable generator comprising at least an elongated piezoelectric material element, with one end fixed at a base and having a first permanent magnet attached to the other end, said at least an piezoelectric material element being suited to bend so that it can assume two distinct stable equilibrium positions on the side of a central instable position in which it is disposed perpendicularly to the base. A second permanent magnet or electro-magnet is fixedly placed in front of the first permanent magnet. A fixed structure holds in place the second permanent magnet or electro-magnet with inverted magnetic polarity with respect to said first permanent magnet at due distance from the said first permanent magnet .