IR transmitter and receiver

Basic IR circuit.
Tehseen Ilahi.
Electronics Engineer SSUET Karachi,

Category:

Education

[emadsiddiq98]

what do u do in the end ?

attach the positive of the led to the negative of the receiver which is connected to the positive of the battery . right?

but when i do that it doesn't work . i don't mean that u are wrong but could u please explain it and i bought an ir pair but the receiver is black is that fine?

sorry to disturb u but i am a beginner and quite confused!

please answer

[tehseenb10]

@emadsiddiq98

LED is attached at the output of the receiver( which is negative of receiver).Yes Black is fine is..

[TheTubejunky]

I noticed that the reversed bias reciever is incorrect as described in your schematic.

(unless my parts are labeled/Mfg'd differently)

I used a (radioshack) matched pair emitter and detector/transistor and I found that putting the reciever/transistor in as marked negative to negative positive to positive (forward biased) is the correct way to use the reciever, as reversed biased did not work.

[tehseenb10]

@TheTubejunky

Circuit is perfectly right. It is used by many users and it worked.

Here receiver is reversed bias. ( I use simple IR sensor pair)

The pair that you used is different.

[jayr64]

where can i buy a receiver like the one you used? all the ones i find have 3 prongs all in a straight line. it appears the one you are using has only two? also, are there any specific LEDs that you are using? or just normal

[tehseenb10]

@jayr64

I used IR sensor pair and has only two prongs...

It is easily available in Electronic equipment shop..

[29riteshkakkar]

mast hai yaar....

[amaljoy333]

i have a idea . we can use this as a motion sensor. by placing transmiting part on one of door and other on the next side . when anyone block the ir led glow you can also use a buzzer .

[1110lakshman]

my id yahoo id is laxmanp1110@yahoo.in and for gmail id is laxmanp1110@yahoo.in

[1110lakshman]

hey plz send circuit diagrams , material required ,etc to my id ...plz iam trying to make this from long time.but i was not able to do it .......u can send this to my id either yahoo or gmail . i will give u both id .u send it in any one ..plz help me in making this..plz dont disappoint me ,,,,thanks

[sunilmanjunathv]

whats the model number of IR receiver and transmitter.... pls reply me....

[amruth111]

Can this IR Rx pickup reflected IR form the Tx.