Phototransistor/diode IR LED

Discussion in 'General Electronics Chat' started by calrod, Oct 4, 2010.

  1. calrod

    Thread Starter New Member

    Oct 4, 2010
    2
    0
    Hi Guys, Trying to identify and replace components in a beam break device - There is a 5mm emitter and phototransistor/diode mounted 140mm apart, when the beam is broken it interrupts the 4.5v at the transistor/diode - there is 1.1v at the emitter - can anybody suggest a suitable pair - I believe its filtered light so guessing IR.

    Many Thanks
     
  2. marshallf3

    Well-Known Member

    Jul 26, 2010
    2,358
    201
    I think even Radio Shack used to sell those as a pair.

    Be nice to know the voltage and current the driver side is set up for but in general most any IR emitter & detector with the same or similar wavelength will probably work.
     
  3. calrod

    Thread Starter New Member

    Oct 4, 2010
    2
    0
    Thanks marshallf3
     
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