| 摘要 |
PURPOSE:To realize the selection of three control modes in all, by realizing the mode selection outside of an area in addition to the on/off control of a remote control relay. CONSTITUTION:A pattern setting switch 8 consists of a pair of switches 8a and 8b, and the switch 8a is used to select on or off mode. An AND of the output of the switch 8a and the output of a binary counter 5 that delivers the output successively plus EXo'R are obtained through a polarity discriminating circuit 9. A polarity switching circuit 10 is controlled by the output of the circuit 9. Then a remote control relay is turned on and off when the switch 8a is on and off respectively. The switch 8b is used to select an area of the 3rd mode, and an AND is obtained through 12 between the output of the switch 8b and the output of the counter 5. The output of the AND is supplied to the base of a transistor (TR)Q3 which is connected in series to TRs Q1 and Q2 of the circuit 10 via an o'R circuit 13. The remote control relay 7 can be turned on and off when the switch 8b is on. And no signal is applied when the switch 8b is off. |
