A vibratory hopper feeder is used for small and lighter parts as they are normal dropped from a smaller height into the bowl feeder below without any damage to the vibratory components. It has a sensor that is held over the bowl feeder and when the sensor notices a minimum number of components, the vibratory hopper sitting on a linear drive vibrates and the components will shake into the bowl feeder.
When the sensor notices there are adequate components in the bowl feeder, the vibratory hope will stop. Some vibratory hoppers have small funnel in their down part while others may just be small surface normally used for small components.