| 摘要 |
PURPOSE:To make a turn-ON time for a thyristor shortest and to enable smooth measurement of a current and a voltage in proximity to the end of charging of a load capacitor by putting a reverse-polarity charge beforehand on the load capacitor. CONSTITUTION:In order to measure an I-V curve, a discharging and reversely charging switch 4 is opened and then a load connecting thyristor 5 is closed. On the occasion, the terminal of a solar cell is biased reversely to the output of the solar cell by a charge applied beforehand thereon. While a load capacitor 6 is discharged by an output current I of the solar cell and a charge thereof turns to be 0V gradually, a terminal voltage of the solar cell passes 0V point on the occasion. Moreover, the current I flows into the capacitor 6 and it turns not to be charged. Next, the thyristor 5 is opened and the switch 4 is closed, whereby measurement is completed. |
