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Overunity Machines Forum



Solar Garden Light Joule Thief HELP needed

Started by Flux4Energizer, May 20, 2011, 12:06:27 PM

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Flux4Energizer

Hello,

I'm trying to convert a basic garden solar light.
The standard garden light uses 1 led and i converted it to 3 leds.
I applied different joule thief circuits to the leds but it's just not bright enough 
The standard garden light uses just 8 ma and i want to get more light with the 3 leds with the same (or less  ;D) amp draw.

I already used the basic joule thief circuit (amp draw 40ma  >:()
Basic joule thief with secondary (not bright enough)
Backwards Joule Thief from kooler (not bright enough)

Has anyone got a good circuit for me to try???

PS.
I'm using lidmotors solar circuit!

Flux4Energizer

Is there nobody here who has a good idea???
Should be sombody who has a good circuit which uses less then 8ma p/led!!!
I only need to drive 1, 2 or 3 leds with lets say 20ma for 3 leds.

Please help me with a good circuit!

PS.
Leds should be at least 80% bright

NickZ

  The way to get three leds to light off of the solar cell, is with the backwards JTc or Hartley type oscillators. And the three leds in Paraallel
  Kooler had made a tiny oscillator circuit that lit three leds in Parallel, off of a 1.2 volt button cell (for 7 months).  I'm still trying to replicate that circuit... 
I personally have not had luck with Kooler's circuit yet, but I'm trying to get all the exact same parts, and try again.  I think that it's an important one to be able to get the concept right, and working right also, using only MicroAmps.
  It seams that the backwards JTc feeds-back to the battery, and can almost self perpetuate, or close to it.

Pirate88179

I would suggest the MK1 JT circuit.  You can add a bunch of leds off the pick-up coil and not up the Ma draw.

Bill
See the Joule thief Circuit Diagrams, etc. topic here:
http://www.overunity.com/index.php?topic=6942.0;topicseen

Flux4Energizer

@NickZ

Thank you for your reply.
Do you have a link for me where to find the circuit?

Regards,

Flux