| 摘要 |
PURPOSE:To enable the processing of many signals by small number of a signal conductor in a signal circuit used for remote controlling or minitoring an instrument in a building and factory etc. by making multiple use of the signal conductor as a mutual common conductor. CONSTITUTION:When a switch 10 is closed, a closed circuit of a relay 13 and a power source 91 is formed through diodes 11, 12, and consequently, the relay 13 operates responding to the make of the switch 10. When a switch 20 is closed, a relay 23 operates similarly. As relays 33, 43-83 also operate responding to switches 30, 40,-80, this basic circuit can transmits eight signals. As the switches can be replaced with corresponding relays, this circuit can transmit and receive eight signals. Assuming the number of the signal conductors N, a closed circuit multiplying N square by 1/2 can be constituted between the conductors. |
