1.
IR SENSOR:
IR
sensors consists of two LED's which generally helps in detection of
objects
- BLUE LED -Photo Diode
- WHITE LED -IR
IR have a
range of wavelength from visible light to microwave. (0.75µm to 1000 µm).
In case of
IR sensor the arrangement is so made that when light falls the resistance value
decreases and more current flows through the load similarly when no light falls
on the resistance value decrease’s thus changing it to no load current.
IC used in
the sensor circuit is LM358. (2 opamp). Thus giving a 0 and 1 output in both
the above process.
