| 摘要 |
PROBLEM TO BE SOLVED: To provide a current detector which accurately and easily detects the current value flowing in a measured object even when the frequency of a measuring signal supplied to the measured object is varied. SOLUTION: The current detector comprises: an oscillator 21 for adjusting the frequency of an alternating current signal S1 for measurement; and an amplification circuit 22 for current-voltage converting the current I1 flowing in the measured object DUT in applying the alternating current signal S1 for measurement. In the amplification circuit 22, a feedback impedance for determining conversion gain of current-voltage conversion is constituted by capacitors 22b-22e. COPYRIGHT: (C)2007,JPO&INPIT
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