Joule Thief

[crowclaw]

@  Merv, thankyou,  the solar cell will put out say 2.5v for the Cap and the current say about 200mA,
                            the diagram is only on paper at this stage, can you help ?

@freepow    Thank you for the info. I have an idea for you... will keep it as simple as possible using readily available parts. I trust you have a multi meter to make some circuit adjustments. Will post back soon.

[guruji]

Did anyone try this:Micro TPU

http://www.youtube.com/watch?v=xQr9vLxs7lM

[crowclaw]

@freepow Here is the circuit:

[Mk1]

Did anyone try this:Micro TPU

http://www.youtube.com/watch?v=xQr9vLxs7lM

Yep i did , i long time ago , i believe others tried too . I have nothing to comment in the circuit the leds are used as diodes to rectify and feed back to source so the losses make light ...

Mark

[ibpointless2]

I have made the fuji joule thief circuit to light up a CFL and LED’s but for some reason mine is not as powerful as others. For example there is a guy on youtube by the name of Lasersaber who built one of these according to piratelabs, just like how I built mine, who is able to get great results.Laser saber video…

http://www.youtube.com/watch?v=sFpzkyP6DCU

I have one of those cone shaped LED bulbs like lasersaber has but mine only lights 3 of the many LED’s while all of his light up and not only that they also light up about 100 or so more. I also saw that piratelabs had his light up 400 LEDs! I don’t know what I did wrong because I can only light up 3 of my LED’s in my cone shaped bulb.

I removed the big capacitor. Cut the end of the diode and solder my wire to the other end and a wire to the negative and that connected to the CFlL or LED. Then I tried piratelabs way of soldering those to connections in the middle of board and use that along with the diode connection to power a CFL And LED but still the same results, only able to power 3 LED’s. I also add the on/switch to it just like the one piratelabs have. I don’t get it what am I doing wrong? Can anyone help me? Thanks!