Electrical circuit for controlling the feed rate of parts

摘要

Disclosed is a circuit for automatically controlling the feed rate of parts that is particularly adapted for controlling inductive loads. Disposed on either side of a passageway is a light source and a photo-sensing device which emits a signal pulse whenever a part interrupts the light beam between the light source and the photo-sensor. The pulses from the photo-sensing device are supplied to a monostable multivibrator which converts the pulses to uniform width, fixed amplitude pulses that are integrated and provided to a control circuit which controls the charge on a capacitor. When the charge on the capacitor exceeds a predetermined level an SCR is triggered, operating the motive means of the circuit.