beam break detector for camera shutter or flash control


Posted on Feb 6, 2014

The IR detector (IC3) controls an LM 7555 CMOS timer (IC2) which operates in mono stable mode. When the beam is broken, IC2 is triggered and its pin 3 output goes high for about half a second. This extinguishes LED1 and turns on transistor Q1 to drive a 5V low-power relay..


beam break detector for camera shutter or flash control
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    IC 2 tones Siren
    Fuzz-box circuit
    Bedini Motors
    avr Programming an ATmega1284p with Arduino IDE and internal RC Oscillator
    uhf tv preamplifier circuit
    Series Inductor Filter
    The Remote Controlling Circuit
    GSM localizer without GPS Schematic
    LED Pumpkin Candles for Colorful Halloween Jack-O-Lanterns
    Switching power supply circuit with STK6303
    3D audio processing and application circuit LM4610



    Top