Four-way remote control AC switch

Relevant key device information applied in this article: TX315B1 9013 is shown in the figure. This circuit is composed of a TX315B1 transmitter/receiver component. The four-way high-level control signals output by the receiver decoding circuit drive the self-locking relay through the transistor. To connect four AC power sources. The output terminals A ~ D of the receiving component are connected to four groups of relay drive tubes VT1 ~ VT4, each drive tube drives a self-locking relay K. The output terminal Io forms the transmitter of VT1 ~ VT4 through VT5 Extreme path controller, only when Io outputs a decoded valid signal to turn on VT5, VT1 ~ VT4 can be turned on.