Partial discharge analysis in a Pb(Ti, ZrO3) dielectric

The sources of partial discharges in piezoelectric power transducers must be minimized if the corona discharge specifications are to be met. This paper describes some of the results of an investigation into the causes of partial discharges in sonal power transducer elements using a new method of discharge pulse display. The objective of the work was to provide greater insight into the factors leading to corona with the expectation that better methods of quality control in the fabrication of devices might follow.