| 摘要 |
<p>PURPOSE: To simultaneously turn on and off first and second loads to be individually turned on an off by one time operation of one switch when they are constant. CONSTITUTION: A switchgear 10 is provided with a switch 12 to output an open-close signal 12P, a switch 14 to output an open-close signal 14P, a switch 16 to output an openclose signal 16P, a contact point 20A inserted in a power line 18A to impress electric power supply voltage on a light LA, a contact point 20B inserted in a power line 18B to impress electric power supply voltage on a light LB and a control means 26. The control means 26 respectively reverses open-close conditions of the contact points 20A and 20B when the open-close signals 16P and 14P are inputted, and reverses the open-close condition of the contact point 20A when the open-close signal 12P is inputted, and reverses the open-close condition of the contact point 20B only when the conditions of the contact points 20A and 20B coincide with each other just before the open-close signal 12P is inputted.</p> |
