so wat is it

Discussion in 'Tech/Mech General' started by Wildbill, Mar 31, 2014.

  1. Wildbill

    Wildbill Funster

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    when I bough the lose solar panels there was a very small diode in5819 taped to the back of them any one know watt it is for ?
    I know it is a diode if using a regulator will I need one of these to ?:Eeek:
     
  2. TheBig1

    TheBig1 Funster Life Member

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    blocking diodes Bill
    you need to install one to prevent the batteries discharging at night when no solar charge is being put out. think along the lines of a non return valve for the current
     
  3. Wickolad

    Wickolad Funster

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    Hi bill, solar panels usually have a diode fitted to stop power being drawn from the battery at night time when the panels are not producing power. It could be a spare or it could be provided for you to install when fitting. If your panel has a junction box on the back, then the diode is usually fitted in there, in series with the positive tail.
    This link may help explain it.

    http://www.solar-facts.com/panels/panel-diodes.php#

    Lance :thumb:
     
  4. Wildbill

    Wildbill Funster

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    so that's watt happened to my battery when the rectifier went tit's up battery as flat as a fart knackered it but do I need them with a rectifier new control box thing I will fit one for each panile after reding that you learn so much on her in fact off to the electrical shop tomorrow to make a simple circuit board to mount them on
     
    Last edited: Mar 31, 2014
  5. TheBig1

    TheBig1 Funster Life Member

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    you only need 1 but capable of handling total current from all the multiple panels
     
  6. Wildbill

    Wildbill Funster

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    so if I banked the panels in two's that would be ok :thumb:
     
  7. hilldweller

    hilldweller Funster Life Member

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    Make sure it's the right way round


    ---PANEL++++..................DIODE|band|......... controller +
     
  8. Wildbill

    Wildbill Funster

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    so watt way is the right way up ?
    :Eeek:
     
  9. Reallyretired

    Reallyretired Funster

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    It should have a + or a band on it to mark one end. This end goes towards the panel in the + line. They are usually already wired in so perhaps that ones a spare.
    edit, sorry got that the wrong way round. If its a band this goes away from the panel in the + line
     
    Last edited: Mar 31, 2014
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  10. hilldweller

    hilldweller Funster Life Member

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    I've just drawn it ! Badly.

    The diode has a band round one end, this goes to the + input of your controller.

    The plain end of the diode goes to the + of the panel.

    The - of the panel goes direct to the controller.

    It does not matter whether the diode is next to the panel or next to the controller ( where it should be dry and safe ).

    A diode is simply a one way valve for electricity, the current can flow one way only.
     
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  11. Wildbill

    Wildbill Funster

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    i am building my own panel for the van
    once I get it I will be making another three I will bet 40w at a pond a watt for half the price of the cheapest panels once I know watt I am doing:Eeek: it will be a walk in the park just making the prototype just now:Wink:
    have posted sum picks on a another thread
     
  12. Wildbill

    Wildbill Funster

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    thank you very much it is me I am just leering once in the head
    it will stay there got it now thank you very much brian
    bill
     
  13. Wildbill

    Wildbill Funster

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    just looked at the old panel the diode is broken so nothing wrong it panel just replace the diode :BigGrin:
    so now got loads of watts
    now to find out how to fix the panel to the roof with out making the roof leek :Eek!:
     
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