10.5v 160mA solar panel - outdoor security light

Discussion in 'The Projects Forum' started by Solar1, Jan 12, 2009.

  1. Solar1

    Thread Starter Member

    Jan 12, 2009
    15
    0
    Hi: My first post.

    I have acquired a solar panel that produces 160mA at 10.5v in full sunlight and I want to build it into a circuit that charges a battery to power a light that comes on after dark. Outdoor security light concpet.

    I need the light to shut off automatically after the battery gets below the required voltage after the light has burned for 2-4 hours. I know I will need a photo-detector, relay and maybe some kind of comparator for shut off.

    [​IMG]
    (schematic copied from post by "Audioguru" from another thread)

    How do I modify the above schematic to make the light to something more powerful (more LEDs?) and rig the circuit so it will switch off automatically if the batts. voltage drops to low during the night - don't want continuous batt drain if it gets too weak to power the light. Also, given the specs of my panel, what battery and how many should I choose to charge?


    Greatfully yours,

    Solar1
     
    Last edited: Jan 13, 2009
  2. Solar1

    Thread Starter Member

    Jan 12, 2009
    15
    0
    I modified and added a schematic to my post to be more specific.

    Hope that helps!
     
  3. Solar1

    Thread Starter Member

    Jan 12, 2009
    15
    0
    Any suggestions would be greatly appreciated.

    Thanks,

    Solar1
     
  4. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    145
    Because there is commonality in the topic, would this be better served in the existing thread? At least all information regarding this topic would be grouped together.

    Dave
     
  5. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
  6. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    145
    Yes, that is the one I am referring to bertus. The questions appear to be targetted at slightly different elements of the same project. If there is commonality in the topic, then it is best kept in one place.

    Dave
     
  7. Solar1

    Thread Starter Member

    Jan 12, 2009
    15
    0
    OOOps! Sorry for the redundant thread here guys.

    If a Moderator would delete this thread, I would greatly appreciate it.

    I posted this in the "General Electronics Chat" forum.
     
  8. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    As the OP you can delete this thread yourself. One of the things I like about this site is they trust and give the users a bit more power than usual. So far people don't seem to abuse it. Off the top of my head I think you need to use the "Go Advanced" options.
     
Loading...