| 摘要 |
PURPOSE:To provide a portable power supply in which each portable power supply can be driven upto the maximum output and total output can be taken out efficiently at the time of parallel operation while exhibiting the protective function of each power supply sufficiently just in case of single operation. CONSTITUTION:Output current is detected through a current detector 5 and compared through a comparing circuit 25 with first and second thresholds. When the output current reaches the first threshold, it is lowered by means of an electronic volume 9 and when the output current drops to the second threshold, operation of the electronic volume 9 is released to reset the output voltage. |
