This is the very simple circuit diagram of IR remote control switch. We uses normal switch in our daily life and after a long time used to these swithing system we can no more interested in that . This is a good solution for a unique and so interesting idea to wireless switching system to control the home appliance. IR (Infrared) Remote controlled switch circuit diagram for Light/Fan Appliance
This home made wireless remote controlled switch system is a very easy to construct and can change our living experiance. TSOP1738 is used in the circuit for sensing the infrared signal output from remote. Here we can use any tv, usb player or dvd remote and it works upto 10 meter distance.
The output signal from TSOP1738 is applied to PNP transistor 557. The amplified signal from transistor Q1 is fed to the pin no 14 of ic.
TSOP1738 is the IR receiver module .TSOP 17…. Series Photomodules are miniature IR sensor modules with PIN photodiode and a preamplifier stage enclosed in an epoxy case. Its output is active low and gives +5 V when off.The important features of the module includes internal filter for PCM frequency, TTL and CMOS compatibility, low power consumption (5 volt and 5 mA), immunity against ambient light, noise protection etc. 1738 is sensitive for 38khz frequency.
TSOP 1730 5V 30 kHz
TSOP 1736 5V 36 kHz
TSOP 1738 5V 38 kHz
TSOP 1756 5V 56 kHz
Photomodules are 3 pin devices. These pins are assigned for +V,–V and output. The pin assignment of TSOP 17… series from the front side (projected side) is Pin 1 Ground, Pin 2 + 5V and pin 3 Output. The photo module requires regulated 5V supply. If the supply voltage increases, the device will be destroyed.
When the Remote is not pressed then the output of TSOP sensor is HIGH . After the pressing any key buttom of remote the output of sensor goes LOW for a Moment . As this case the input clock pulse is changed for a moment at pin no 14 of IC 4017. As Clock pulse is changed the State of This Ic is changed also and then output is changed . The output is Remain in same state Untill the Clock pulse at pin no is changed therefore as result the remote is able to changing the state of 4017 and output turns ON and turn OFF the transistor and Connected Load is Switched ON and Switched OFF after Every Key Pressing Of remote.
is a CMOS decade counter cum decoder circuit which can work out of the box for most of our low range counting applications. It can count from zero to ten and its outputs are decoded. This IC also simplifies the design and makes debugging easy.
Pin-14 is the clock input. This is the pin from where we need to give the input clock pulses to the IC.Output is connected with pin 2. It goes high when the counter reads 0 counts. one LED is connected with pin 3 to indicates when switched off appliances. Transistor BC547 is used to control the relay.
Few components required to construct this remote controlled switch circuit that makes its so simple and smaller size.
use 5 v regulated power supply to operate this circuit and place IR receiver as front facing and can easly receive signal from remote.
Here is a Demo Video of this Project. Please Watch This video
BC557 or 558-1 , BC547 or 548 -1
470ohm-1, 100K- 1, 1K-1 , 2.5K-1