Why do I need to generate pulse for an incubator

Discussion in 'General Electronics Chat' started by Dokxman, Dec 3, 2009.

  1. Dokxman

    Thread Starter New Member

    Dec 3, 2009
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    I am try to design an incubator circuit, which has a decade timer NE555. But I am not really sure why I need to generate pulse and what it really does. Anybody with a good idea?
     
  2. Wendy

    Moderator

    Mar 24, 2008
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    Can't even hazard a guess without information. A schematic or link would be a good start.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Just to hazard a guess; perhaps they want to use a 555 timer to PWM the power to the heat source for the incubator.

    That would be OK if there was some kind of temperature feedback, such as from a thermistor, or preferably from a thermal sensor like an LM35. But in that case, it would likely be easier to use a comparator as a voltage controlled PWM source.
     
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