Ultrasonic transducer with piezoceramic element on ceramic diaphragm - has electrodes on opposite faces of ceramic block supplied from connection pins via soldered wire and internal metallisation of housing.

摘要

The body (1) and the diaphragm (2) bonded to or integral with it constitute a housing with an external contour (3) which determines the acoustic radiation surface. One electrically conductive principal face of the piezoelectric convertor (4) is bonded to the interior face of the diaphragm to form a flexural oscillator. The outer electrode is supplied with current via an uninsulated pin (6) through a closure (5). The inner electrode is wired (7) to another pin (8) set into a feedthrough insulator. USE/ADVANTAGE - At frequencies above 60 kHz and in harsh environments, sufficiently small device has low energy consumption, good directionality and efficiency over wide temp. range.