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Powering a solar tracker

Discussion in 'General Electronics Discussion' started by foTONICS, May 10, 2013.

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  1. foTONICS

    foTONICS

    332
    9
    Sep 30, 2011
    So I am working on this solar tracker circuit for my final project (I posted on here a couple weeks ago asking for help regarding a couple of things).

    I want this thing to power itself without relying on any type of battery system, what kind of erratic behaviour can I expect as the sun starts to dip and can't deliver the appropriate voltage for the system?

    It's gonna be a small system running off 12 volts from the output of a regulator, 1 open collector comparator, and a couple power transistors to form an H-bridge to drive a motor forwards and backwards.
     
  2. GreenGiant

    GreenGiant

    841
    6
    Feb 9, 2012
    well if you have an undervoltage protection circuit in there then once the sun gets below a certain point it will just stop moving.

    You should probably have some sort of battery in there for if a cloud goes by the sun, or just enough to move it back to facing east after the sun goes down or something.
     
  3. foTONICS

    foTONICS

    332
    9
    Sep 30, 2011
    should my undervoltage protection circuit be before my tracking circuit or just before the actual motor, or both?

    ive attached a picture of something i came up with after a little research and after running it through multisim it still seems to let some voltage through (even when I decrease the Vin to less than the value of the zener diodde) am i missing something with this circuit??
     

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