Patent ID: 6285193
Filing Date: 2001-09-04
Classification: G01R

Abstract:
An apparatus for screening the characteristics of capacitors, comprising:transporting means driven for circulation in one direction including retaining portions for retaining capacitors at constant intervals;supply means provided in the vicinity of the transporting means for supplying the capacitors to the retaining portions of the transporting means;impedance measuring means provided adjacent to the course of the movement of the retaining portion of the transporting means for applying AC signals at two different frequencies to the capacitors retained by the retaining portions and for measuring the impedance of the capacitors at each of the frequencies;good/defective determination means for determining good and defective capacitors by calculating the insulation resistance of the capacitors based on measured values from the impedance measuring means;a good parts unloading means provided in the vicinity of the transporting means for ejecting capacitors determined as good by the good/defective determination means from the retaining portions of the transporting means;defective parts ejecting means provided in the vicinity of the transporting means for ejecting capacitors determined as defective by the good/defective determination means from the retaining portions of the transporting means; andpacking means provided in association with the good parts unloading means for packing good capacitors unloaded from the good parts unloading portion.