provided with one or more actuator bumps 62 in a tool housing 64 surrounding the mandrel 60 one or more piezoelectric elements 66 are installed in this embodiment one or more compression pistons 68 are located between the piezoelectric elements 66 and the bump or bumps 62 it is noted that in some applications the pistons 68 may be omitted and contact between bump or bumps 62 directly with element or elements 66 may be had upon rotation of mandrel 60 sequential elements 66 will be compressed and released this will generate a voltage potential which may then be stored in a capacitor similar to that depicted in fig3 or may simply be used without storage if appropriate for the application this arrangement will then be connected to the spark gap electrodes in yet another embodiment of the mechanical energy arrangement referring to fig5 a mandrel 70 is configured with a shoulder 72 that has an offset profile such that a portion of shoulder 72 will be in contact with a relatively small portion of a counter shoulder 74 located within the spark gap tool housing 76 located at 78 around the periphery of housing 76 is one or more piezoelectric elements which can be mechanically compressed one after the other as mandrel 70 rotates it should also be noted that a compression piston arrangement such as for example a metal disk may be placed atop the element 78 to protect them from direct frictional degradation due to rotation of mandrel 70 but still allow the compressive force of shoulder 72 to cause the desired voltage potential in element s 78 as is clear from the drawing however such disk is not required but merely is optional while preferred embodiments have been shown and described modifications.