| 摘要 |
An FET-characteristic measuring system applies a pulse output from a pulse generator to the gate of an FET in order to measure drain current flowing through the FET. The pulse has a voltage based on a set voltage. The measuring system includes a divider for dividing the pulse output from the pulse generator into a first pulse applied to the gate of the FET and a second pulse for voltage measurement; voltage measuring means for measuring a voltage of the second pulse; and set-voltage adjusting means for determining, based on the voltage of the second pulse, a target set voltage for the pulse generator to apply a pulse having a desired gate application voltage to the FET and for adjusting the set voltage to the target set voltage so that a voltage of the first pulse is equal to the desired gate application voltage.
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