Simple beam break sensor

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  1. - 27th July 2009, 07:11 #10
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    Quote Originally Posted by The Master View Post

    Is there a way to calculate what resistors and capacitors to use? .
    http://www.national.com/ds/LM/LM555.pdf
    The formula is in this data sheet near the end, page 10 between figure 13 & figure 14.
    Last edited by Archangel; - 27th July 2009 at 07:14.
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