Circuit for an infrared remote control power socket

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MC14013C945LM78L05
Not long ago, the author used a YK-1D wireless remote control power socket which was damaged. Using its housing and power transformer, the author made an infrared remote control power socket which can be controlled by both TV and VCD remote control.
The socket circuit is shown in Figure 1. The circuit uses an infrared receiving head that integrates reception, amplification and demodulation. The relay trigger drive circuit uses a double D trigger MC14013. This circuit only uses one of these triggers and connects them into bistable form. D and Q are connected, R and S ends are grounded. The R3 and C2 capacitance networks connected to the R-terminal can reset the power supply to ensure that the socket is in a "off" state when power outage comes.
Normally, because the output of the receiver head is about 4.2V high level, T2 is on, the trigger input (CLK) of the bistable circuit is low level, Q output is low level, T1 cutoff, relay J does not work, socket does not have 220V output. Press any key of the remote control, the receiving head receives the signal from the remote control, outputs the demodulated pulse signal from the output port. At this time, the output voltage decreases, T2 cuts off, which is equivalent to giving CLK an instantaneous high level, Q-end outputs a high level, T1 conducts, relay J works, it often opens contact suction, socket outputs 220V voltage, then press the remote control, socket loses power.
Figure 2 shows the printed circuit board. If the anti-jamming capability is found to be poor during the manufacture, the following methods can be taken to solve the problem: power transformer and integrated receiver should not be too close to each other to avoid interference. A shielded cable is used to connect the signal output of the receiver head to the circuit board, and a 47-100 cable is added between the power supply of the receiver head and the ground terminal. μ Capacitance of F.