IR Remote Switch Circuit

This circuit lets you control any line powered electrical device (a lamp, television, fan, etc.) using any infra-red remote control. Almost everyone these days has a pile of old IR remotes left over from appliances they have long ago disposed of them. With this circuit, you can put them back into use. The circuit looks for any modulated IR source and uses it to control a TRIAC, which then switches any appliance connected to it's socket. For example, you can use it to control the room lighting in your home theater setup using any of the remotes you already have. The circuit is powered using a simple transformer less power supply from the line itself, making it compact and easily built into a light switch, wall box, power bar or even the appliance you wish to control. Schematic

Part	Total Qty.	Description
R1	1	3 Meg 1/4W Resistor
R2	1	1.2 Meg 1/4W Resistor
R3	1	680 Ohm 1/4W Resistor
R4	1	2K 1/4W Resistor
R5	1	4.7K 1/4W Resistor
R6	1	150 Ohm 1/4W Resistor
C1	1	0.001uF Ceramic Disc Capacitor
C2, C5	2	1uF 50V Tantalum Electrolytic Capacitor
C3	1	47uF 50V Tantalum Electrolytic Capacitor
C4	1	10uF 50V Tantalum Electrolytic Capacitor
C5	1	150 Ohm 1/4W Resistor
D1	1	1N4733 5V Zener Diode
D2	1	1N4003 Rectifier Diode
Q1	1	2N6071A TRIAC
U1	1	GP1U52X IR Module
U2	1	MC74HC74 D-Type Flip Flop
U3	1	MOC3011 Opto Isolator
MISC	1	Board, Sockets For ICs, Mains Socket, Mains Plug and Cord, Wire

 

1. Under normal circumstances, Q1 should not need a heatsink.
2. The circuit is designed for a supply voltage of 120V.
3. The printed circuit pattern is reproduced here larger then real life for clarity. It will need to be resized to the scale at the bottom of the image if you intend to transfer it to a board.

The circuit functions as an on/off flip flop. Illuminate it with your remote once to turn it on, then again to turn it off.