| 摘要 |
PURPOSE:To reduce the number of wires of the whole system, to shorten the length of the whole wires, to reduce the cost of the system, and to remove the complexity of work by connecting each load and a timer for starting the load to the wire connected immediately before them to control the operation of each load. CONSTITUTION:The loads 14-17 are connected to an inverter 13 respectively through timers 18-21. When current is supplied from the inverter 13 to the timers 18-21, the timers 18-21 are turned on, start respective timer operation, and after the passage of time set up in respective timers, supply electric power to respective loads 14-17. The timers 18-21 connected to respective loads 14-17 are connected to each other in series. Therefore, the timers 19-21 are turned on when electric power is supplied from the timers 18-20 connected immediately before respective timers 19-21, and after the passage of time set up in respective timers 18-21, electric power is supplied to respective loads 15-17. If the setting time of respective timers 18-21 is optionally fixed, these timers can be simultaneously started.
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