Remote Operated Home Appliances Circuit

Here is the circuit diagram of Remote Operated Home Appliances or Remote controlled Home

appliances. Connect this circuit to any of your home appliances (lamp, fan, radio, etc) to make the

appliance turn on/off from a TV, VCD, VCR, Air Conditioner or DVD remote control. The circuit can be

activated from up to 10 meters. It is very easy to build and can be assembled on a veroboard or a

general-purpose PCB.

Circuit diagram:

Remote Control For Home Appliances

Parts:

R1 = 220K

R2 = 330R

R3 = 1K

R4 = 330R

R5 = 47R

C1 = 100uF-16V

C2 = 100nF-63V

C3 = 470uF-16V

D1 = 1N4007

D2 = Red LED

D3 = Green LED

Q1 = BC558

Q2 = BC548

IR = TSOP1738

IC1 = CD4017

RL1 = Relay 5V DC

Circuit Operation:

The 38kHz infrared rays generated by the remote control are received by IR receiver module TSOP1738

of the circuit. Pin 1 of TSOP1738 is connected to ground, pin 2 is connected to the power supply through

R5 and the output is taken from pin 3. The output signal is amplified by Q1. The amplified signal is fed to

clock pin 14 of decade counter IC CD4017 (IC1). Pin 8 of IC1 is grounded, pin 16 is connected to vcc and

pin 3 is connected to D2 (Red LED), which glows to indicate that the appliance is ‘off.’

The output of IC1 is taken from its pin 2. D3 connected to pin 2 is used to indicate the ‘on’ state of the

appliance. Q2 connected to pin 2 of IC1 drives relay RL1. D1 acts as a freewheeling diode. The appliance

to be controlled is connected between the pole of the relay and neutral terminal of mains. It gets

connected to live terminal of AC mains via normally opened (N/O) contact when the relay energizes. If

you want to operate a DC 12 volt relay then use a regulated DC 12 volt power supply for DC 12 volt Relay

and remember that the circuit voltage not be exceeded more than DC 5 volts.

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43 comments:

1.

Anonymous16 October, 2009

Could this circuit be amended to turn on/off a small water feature mains pump?

Reply

2.

Izhar Fareed 17 October, 2009

yes u can but you have to change relay. (relay power handling must be same as water pump)

Reply

3.

Anonymous02 November, 2009

I need a on/off switch that can be turn on and off by a dail in modem (sim card),can anybody give me advise.

Reply

4.

raj 22 December, 2009

plz clearly mansion from where we can connect the device which we want to protect.

Means there should be some output & it should be clearly shown so that the wires of the device could be connect.

plz helpregards,rajesh

Reply

5.

Izhar Fareed 24 December, 2009

@RajYou can connect your device on relay terminals, I mean to say that Normal Close, Normal Open and Common.

What kind of device do you want to operate. Please let me know, I will try to help you out.

Thank youMohammad Izhar Fareed

Reply

6.

Sajiv 27 April, 2010

Which kind of remote to be used?

Reply

7.

Izhar Fareed 27 April, 2010

@SajivYou can use any kind of remote control to operate this circuit like, Television, VCD Player, DVD Player's remote. I have built this circuit and it is working fine with my air conditioner's remote control.

Reply

8.

Anonymous03 May, 2010

is this circuit properly work?is 10meter range is possible?

Reply

9.

aditya gupta 30 October, 2010

i built dis ckt. but its nt working,, need help... cn ny recievr be used?

Reply

10.

aditya gupta 30 October, 2010

Cn i use any other IR reciever?

I hav connectd the ckt, but its nt working. i'll join device after i'll see my relay working....

nw tell me, if its possible 4 u, to show the pic of ur PCB, or ckt u have made... i want to c hw to connect device to relay? plz help..

Reply

11.

Izhar Fareed 30 October, 2010

@adityaI built this project myself on veroboard and its working correctly. I have attached this circuit with the fan of my room. But currently i am unable to provide the picture of this project. So please check your connections and IC. I will suggest you to use China Universal IR receiver that can be found easily in china dvd and vcd players.

Reply

12.

glaise 03 November, 2010

i want to setup a 230 v CFL lamp , how can i built built this circuit as working in 230v , pls help me( the circuit need to control by a remote .) please give the circuit ..

Reply

13.

winlin 03 November, 2010

Yes "aditya gupta" any ir receiver will work, but pay attention to the pin positions they are not same.

Reply

14.

alok 19 November, 2010

please mention what is the function of CD4017

Reply

15.

syed 11 December, 2010

sir how to connect this circuit in my home

Reply

16.

Gagan 09 January, 2011

hey frnds plz... help me . i wn know dat any ac appliance can b connected through relay like tv, etc irrespective of the current rating???????do reply guys...

Reply

17.

Izhar Fareed 10 January, 2011

@GaganRelay contacts must be Mains Rated.

Reply

18.

bhagath 19 January, 2011

which pins in relay connect to circuit please mention & how to connect the relay

Reply

19.

Izhar Fareed 20 January, 2011

@bhagathWhat do you want to connect with relay ?

Reply

20.

jaicky 09 April, 2011

The circuit worked perfectly on breadboard.But after soldering on PCB only the green light is ON and the circuit is not switching with infrared.What could be the mistake?

Reply

21.

Izhar Fareed 09 April, 2011

@jaickyBuilt this circuit as shown in diagram. Please check soldering points and wiring.

Reply

22.

sourav 02 May, 2011

This circuit is working properly....Its grate Freed..I think we need to short the pin 1 and 14 of that IC 1738 for clock or trigger the signal state...

Reply

23.

Izhar Fareed 02 May, 2011

@souravYeah!. I built this too.

Reply

24.

mani 08 May, 2011

plz tell where we connect the appliance which we want to controlledand how we connect the pins of the relay.

Reply

25.

Athul 22 May, 2011

This circuit is working properly...

but the circuit switches on or off after sometime automatically without giving the IR signal.

what could be the possible reason for this ?please suggest a solution to rectify this situation

Reply

26.

Ganesh 10 August, 2011

i want to cnnect 230 a.c ceiling fan(remote controld). Which type of relay i hav to use? Ratings of relay?

Reply

27.

Chetan M.P 26 November, 2011

Sir, I can't find 0.1uF ceramic capacitor so, can I use 0.1uF electrolytic capacitor or should I leave that component.

Reply

28.

Chetan M.P 05 December, 2011

Sir, the relay turns on, but doesn't turns off... please assist me..

Reply

29.

Kapil C. Raje 13 January, 2012

Sir, how to use remote for controlling more than one home appliances(fan,bulb,etc.)?

Reply

30.

pramodh 06 February, 2012

please any one tell me how to connect pins of the relay to home applience,and also how can we connect 230v supply to the circuit

Reply

31.

pramodh 06 February, 2012

sir, how can i connect 230v supply to the relay/home appliences and please provide information about relay pins and its connections

Reply

32.

Hari Sri 22 April, 2012

what relay should i connect for a normal 100w electric bulb?

Reply

33.

.ruskin . 07 July, 2012

i am complete unknown to these things but would like to make one for myself...!!plzz help: Is the reciever of remote controller to be installed in fan somewhere or in the switchborad.?? or what .? plzz write few steps how to start and ..what exactly to do..after circuit is made.

Reply

34.

Extreme Circuits 09 July, 2012 @ruskinYou have to install the circuit near/in fan after making this. Please use solid state relay for best performance.

Reply

35.

Nikita Adrika 12 August, 2012

can we use this circuit to control 2 or more electrical appliances?? if can't means which part of the circuit should i change?? im doing this for my project... please help me...

Reply

36.

Unknown 13 August, 2012

circuit is working properly but it change on off continuously after some time pls tel wher the

mistake..??