| 摘要 |
PURPOSE:To commonly use a linking line for power supply and signal use and to enable remote operation with a minimized number of link lines, by flowing a half wave rectifying current to two link lines connected between devices is mutual relation for power supply and interrupting the half wave current and transmitting a remote operation signal. CONSTITUTION:Devices A, B in mutual relation having electronic circuits 6, 7 are connected with two link lines 5, 5', the cathodes of diodes D4, D5 are connected to the line 5', the device A of the link line 5 is connected to one end of a transformer 4 and the device B side is connected to the anode side of a diode 7. Another end of the transformer 4 is connected to the anode side of a diode D2, and a series circuit consisting of diodes D1, D8 and relay break contacts RS1, RS2 are connected between diodes D2, D4 and D5, D7 of the devices A, B. A half wave rectifying current flows to the link lines 5, 5' to supply the power to the circuits 6, 7, a remote operation signal is transmitted by interrupting a half wave current, and the link lines 5, 5' are commonly used for the power supply and the signal. |
