Power Transformer electroactive polymer

The invention relates to a power transformer (1) with electroactive polymer (2). The electroactive polymer (2) forming a polymer film (3). The electroactive polymer film (3) has an electrode (4) and a counter electrode (5) of a mechanically flexible capacitor (6) that forms a variable capacitance due to the mechanical flexibility and the electroactive polymer (2). The electrode (4) and the counter electrode (5) each comprise a planar electrode grid (7) of conductive material. A plurality of electrode grids (7) of electrode (4) and counter electrode (5) are alternately stacked one above another and spaced penetrated by the material of the electroactive polymer (2). Between each electrode (4) and counter electrode (5) is a layer (8) of the electroactive polymer (2) is present.