Please help me to made the simple switch with photo-diode

Discussion in 'General Electronics Chat' started by codon, Feb 22, 2009.

  1. codon

    Thread Starter New Member

    Feb 21, 2009
    Could some one show me how to built the simplest on-off switch using a photo-diode driving 12v replay.When you block the photo-diode,replay will turn on and turn off when unblock the photo-diode.The diode transmitter and photo-diode about 30cm far.Thanks!
    Last edited: Feb 22, 2009