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Solar Garden Light Joule Thief HELP needed

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  • #16
    I finished my solar garden light today.
    Thank you Kooler for your help.
    I will post the solar circuit tonight or tomorrow, i made my own circuit in stead of using lidmotors circuit.
    I have a new laptop and need to install software to shrink the pictures first.
    Also i will take a tew foto's tonight (dark action foto's).

    Regards,

    Flux4Energizer

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    • #17
      As promised here are the foto's (circuits included).


      Joule Thief Circuit (by Kooler (just adjusted it a bit).
      Koolers BWJT Circuit.jpg

      Here is the Solar "ON" "OFF" switch circuit i thought up:
      Solar on_off Circuit.jpg

      And some building PICs and a test action foto
      S-BWJT Inside.jpg
      S-BWJT LED View.jpg
      S-BWJT Test.jpg

      If someone has a better Solar "ON" "OFF" switch circuit please let me know.
      The circuit works, but there is a downside with it.
      When you have tuned the JT to the right amp draw vs light output and you hook up the solar switch circuit the LEDs turn a lot dimmer.
      When i tested the JT circuit the LEDs were blazing at a amp draw of 16ma.
      But now the LEDs are dim
      If anyone has an idea i would like to hear it.

      Regards,

      Flux

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      • #18
        @ Kooler:
        Here is an image of the circuit that I made, trying to replicate the tiny one that you torn down. But it doesn't work for me. It may the the cap (102) is not letting enough juice through. Please let me know if you see something wrong, besides not having the secret diodes, yet. Any ideas are welcome.
        The same circuit works if set up like a regular JT. But hogs to much energy from the cement cells, and the two or three leds which start out being nice and bright, get dim after a while, even when there is enough voltage and current for them to be bright. I don't understand this...
        I thought that this circuit would work well when connected to cement batteries. Hope to get it working...
        Last edited by NickZ; 07-23-2011, 03:43 PM.

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        • #19
          Originally posted by NickZ View Post
          @ Kooler:
          Here is an image of the circuit that I made, trying to replicate the tiny one that you torn down. But it doesn't work for me. It may the the cap (102) is not letting enough juice through. Please let me know if you see something wrong, besides not having the secret diodes, yet. Any ideas are welcome.
          The same circuit works if set up like a regular JT. But hogs to much energy from the cement cells, and the two or three leds which start out being nice and bright, get dim after a while, even when there is enough voltage and current for them to be bright. I don't understand this...
          I thought that this circuit would work well when connected to cement batteries. Hope to get it working...
          NickZ,

          I tried the 102 cap but i doesn't work.
          The caps i found out to work the best are the 103 and the 471.
          Hope this helps.

          P.S.
          I fiend it easer to work with a variable resitor / pot; this way you can tune your circuit better.

          Regards,

          Flux

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          • #20
            Flux:
            Thanks for the tip. I've got a 103 capacitor on now. I'm getting several new pots tomorrow, along with some new transistors and resistors too.
            @ kooler: I'm wondering if the wiring that is in my last picture I posted is how your backward Jt is connected. I'm hoping that you saw the picture, (in my previous post).
            I'm still trying to make that feed-back to battery circuit. So, far no cigar, but I'm working on it. Have to make some "special diodes"...

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