Recent content by eemaestro

  1. E

    Simple Optical Switch

    You've explained that when pin2 goes LOW (a diode drop above ground) when the light to the phototransistor is blocked, the output goes HIGH. I was just wondering if the IC's purpose was to "debounce" the sensor output, i.e., remove transient fluctuations in voltage level.    Now I understand...
  2. E

    Simple Optical Switch

    Here's a link to the circuit I was looking at: http://www.electronics-lab.com/projects/misc/017/index.html
  3. E

    Simple Optical Switch

    I saw this circuit in the "Miscellaneous Projects" section. I am wondering what is the purpose of the 555 timer IC? Is it the same idea as using an IC to debounce the input of a mechanical switch?    Or is it something else?
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