Patent ID: 7327156

Claim:
An LSI testing apparatus for testing an electronic device comprising: a power source unit for supplying a source voltage of direct current to said electronic device; a detecting unit for detecting a source current with which said electronic device is supplied by said power source unit; and a judging unit for judging quality of said electronic device, wherein said power source unit comprises means for overlaying an overlaid signal with a predetermined period on said source voltage, and said judging unit judges said quality of said electronic device on the basis of said source current detected by said detecting unit in case said electronic device is supplied with said source voltage on which said overlaid signal is overlaid, and further comprising an alternating electric field generating unit for generating an alternating electric field with a predetermined frequency to said electronic device, wherein said judging unit judges said quality of said electronic device on the basis of said source current detected by said detecting unit under a condition, where said alternating electric field generated by said alternating electric field generating unit is provided to said electronic device.