Features:
1.Capacitive load: The controller is adaptive to resistive load, inductive load and especially capacitive load like piezoelectric ceramics.2.Automatic Voltage Regulation: The builtin Digital Voltage Regulation function can eliminate feeding speed variation caused by mains voltage fluctuation.
http://www.cuh-controller.com/product/251-sdvc40-intelligent-piezo-parts-feeder-digital-controller-sdvc40-451b/
SDVC40 Intelligent Piezo Parts Feeder Digital Controller