Dr Kesorn Pechrach Weaver: Piezoelectrics in Circuit Breakers: Piezoelectric Actuators

Dr Kesorn Pechrach Weaver: Piezoelectrics in Circuit Breakers: Piezoelectric Actuators: Piezoelectric Actuators The planar disposition of the two ceramic plates means that the high fields can be applied without danger of re...

Piezoelectric Actuators

Piezoelectric Actuators

The planar disposition of the two ceramic
plates means that the high fields can be
applied without danger of repolarising the
ceramic. This is different from a
conventional bimorph structure.

The first arm of the actuator produces a
downward movement which provides an
angle for the movement amplification of the
second arm. The total movement is slightly
less than could be obtained from a single
beam of twice the length.

Ref: Piezoelectrics in Circuit Breakers: Design & Test