Feedback To Source

[Pirate88179]

Jesus:

Have a look at this series of videos on Youtube.  comwarrior69 has had a breakthrough on his feedback to source research, it might help:

http://www.youtube.com/watch?v=lDxC7FBrGEk

There are several others in this series.

Bill

[nievesoliveras]

@all

Here is a joule thief circuit that recharges its source battery.
It does not turn on an LED at the same time though.

I know that on @pirate topic there are some people that can improve it with their pickup coil technology and make it to light an LED at the ssame time for the same amount of energy used to charge itself.

It does work if the battery is at least 0.5v and can accept a charge.

Can anyone verify this circuit?

Jesus

[WilbyInebriated]

how many turns on the coil? what model transistor?

[nievesoliveras]

Jesus:

Have a look at this series of videos on Youtube.  comwarrior69 has had a breakthrough on his feedback to source research, it might help:

http://www.youtube.com/watch?v=lDxC7FBrGEk

There are several others in this series.

Bill

Thank you @pirate !

I checked it and found it interesting. He just need to add some circuit schematics to make it more understandable.

I cannot understand well the spoken english, even though I can read and write it almost perfectly.

Jesus

[nievesoliveras]

how many turns on the coil? what model transistor?

Thank you @wilbyinebriated !

Any working joule thief will do.
Mine has 11 turns bifilar, a 3904 transistor and a 1k resistor at the base.

Jesus