Ir Detector


Posted on Jan 7, 2013

Useful for checking TV remote controls, IR-based alarm systems, and IR sources, this circuit causes LED1 to turn on for two sec


Ir Detector
Click here to download the full size of the above Circuit.

onds in the presence of IR light pulses. UlA acts as a voltage follower for detector Ql. CI and R2 form a differentiating network and U1B acts as an amplifier for the pulses, which charges C2. Voltage follower U1C samples the voltage on C2 and drives comparator U1D, which switches LED1 on or off.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

IR Link PIC tranceiver
Tone control
1 KHz Sine Wave Generator Circuit
American Police Car Siren by IC 555
Battery-Charging Indicator For Mains Adaptor
The Metal Detector Circuit
Human Voice A1 Loud Clear English Talking Watch 2 Alarms Rooster Crow 12 24
Digital Remote Thermometer
sine/cosine wave oscillator
Animatronic Mouths Circuit
Cheap I2C bus control stereo decoder TDA9853H
AC arc welding machine transistor load power path from 2



Top