Piezoelectric voltage transformer e.g. for 40 kV ignition voltage for automobiles

摘要

A voltage transformer includes a piezoelectric primary part (1), at least partly electrically controlled, and a piezoelectric secondary part (2) from which at least one electric output signal (Usec) can be tapped. Both the primary part (1) and the secondary part (2) are clamped by a yoke (4), with the primary part specifically comprising of at least one multilayer piezoelement formed from at least one piezoelectric discrete layer (11).