| 摘要 |
PURPOSE:To operate N other power supplies continuously upon interruption of one power supply by providing a starting signal to each power supply after passing it through a plurality of power supply loop circuits sequentially in series. CONSTITUTION:Upon interruption of a power supply #1 due to a trouble, the power supply #1 interrupts a normal operation signal to be fed from an alarm circuit 13 and produces an alarm signal at terminal So. Consequently, signal supply from an AND circuit 15 is interrupted and a starting circuit 16 disables a power supply circuit 11. Other sound power supplies #2-#4 receive alarm signals from the faulty power supply #1 through terminals Si, but no alarm signal is outputted from the alarm circuit 13 because the power supply is operating normally. Consequently, an AND circuit 14 does not produce an output and terminals A and B in a loop circuit 12 are kept in closed state. The AND circuit 15 outputs signals continuously thus producing output from each power supply circuit 11 continuously. |
