of the electrode as described hereinbelow one skilled in the art will readily recognize that the discs elements electrodes etc shown in the drawings are grossly exaggerated in proportions for purposes of illustration the stabber or hammer 15 may be made of any suitable material but is preferably of tungsten carbide because of its hardness properties and the requirement that the stabber point fracture element 18 although a plurality of separate ferroelectric elements could be placed on the fracturable element maximum coverage of element 18 provides maximum strain on the poled ferroelectric elements and in turn provides maximum electrical energy output in the embodiments of fig2 and 3 disc 18 is disposed intermediate and contiguous with poled ferroelectric ceramic elements sections or discs 20 22 ferroelectric disc 20 may have an opening or aperture 24 which allows the stabber or plunger 15 to strike the stressed disc 18 although other configurations may dispense with the aperture and strike disc 18 from other angles or sides the element 18 should have such as the following properties be capable of storing a large amount of strain energy be frangible and be capable of releasing a high percentage of the initial stored energy fracture of the disc 18 releases.