10-06-2013, 04:12 PM
INFRARED REMOTE CONTROL
INFRARED REMOTE.doc (Size: 46.5 KB / Downloads: 23)
IR TRANSMITTER
The transmitter circuit includes IR LED, 2N2222 NPN Silicon Transistor , 2N2907 PNP Silicon Transistor
IR RECEIVER
The receiver part mainly consists of LM308 Op Amp IC , LM567 Tone Decoder, and NPN Phototransistor and a relay.
When the IR light strikes the phototransistor it gets biased and the electrical signal is fed to OP AMP and the amplified signal is fed to TONE DECODER .
The o/p of tone decoder is fed to 6v relay and by using that relay we can control mechanical equipment also., such as revolving motor,closing door by remote control etc.
You should try this circuit and send feed back to me.