Patent ID: 6674295
Filing Date: 2004-01-06
Classification: G01R

Abstract:
An impedance measuring apparatus, including at least a voltmeter and an ammeter; for measuring impedance of an electronic component using a four-terminal method, the impedance measuring apparatus for the electronic component comprising:a first current-carrying line connected between one electrode of said electronic component and the ammeter and a first voltage detection line connected between said one electrode of said electronic component and the voltmeter; a first resistor establishing a connection between said first current-carrying line and said first voltage detection line; a second current-carrying line connected between the other electrode of said electronic component and the ammeter and a second voltage detection line connected between the other electrode of said electronic component and the voltmeter; and a second resistor establishing a connection between said second current-carrying line and said second voltage detection line, wherein said first resistor and said second resistor have resistances which are larger than contact resistances occurring a) between the electrodes of said electronic component and the current-carrying lines, and b) between the electrodes of said electronic component and the voltage detection lines.