| 摘要 |
PURPOSE:To ensure the turn-on and off control of the load, by receiving the turn-on and off control signal from the transmitter to turn on or off the switching contact and by providing the switch, which turns on and off the switching contact, in the receiver single substance. CONSTITUTION:The rectification output of AC power source 8 is applied to AND gates G10 and G11 through inverter gates G6-G9. One of gates G10 and G11 is opened by the turn-on and off control signal from the transmitter by demodulating circuit 10. Set-reset FF11 drives transistor Q2 according to outputs of gates G10 and G11 to turn on and off load switching contact 6. When signals of gates G10 and G11 do not exist, the input is given to FF11 to turn on and off contact 6 by operating switches 2d and 2c. |
