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Using an infrared sensor as a switch

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Discussion in 'Sensors and Actuators' started by marmitas, Oct 25, 2012.

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  1. Oct 25, 2012 #1
    marmitas

    marmitas

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    Oct 9, 2012
    I am trying to use an infrared sensor as a switch to turn on PWM pulses generated by a PIC. I don't have much experience working with PNP transistors. The attached image shows my idea, will that work?
     

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    Last edited: Oct 25, 2012
  2. Oct 25, 2012 #2
    (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,257
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    Jan 21, 2010
    I think the simple answer is No.

    It may be easier to have the phototransistor connected to an input on the PIC and have the pulse train get turned on and off under software control.
     
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