View Full Version : continuous infrared emitter and detector

01-19-2006, 09:23 PM
We are looking for an infrared transmitter-detector pair.

The infrared emitters should be able to emit signal of same strength all the time.The detector should be able to detect it at about 2 m and distinguish it from sunlight. If u have any idea of such a sensor pair please let us know.

01-19-2006, 10:32 PM
Google for 38Khx tsop1738.
You will find enough circuits.

The transmitter will have to be made separately,modulated(which means a carrier frequency of 38Khz here) at 38Khz.

If you search the forum,you will find circuits and a write up too.

02-06-2006, 06:03 PM
u can use IR encoder decoder given in the following site


u can get the circuit in the datasheet.

07-15-2006, 08:27 PM
TSOP 1738 cant be used for continous detection , thatz what i learnt thru some post in the forum ..