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Author Topic: Feedback To Source  (Read 387305 times)

Pirate88179

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Re: Feedback To Source
« Reply #540 on: May 27, 2009, 10:02:20 PM »
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

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Re: Feedback To Source
« Reply #541 on: May 28, 2009, 01:08:59 PM »
@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

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Re: Feedback To Source
« Reply #542 on: May 28, 2009, 01:10:53 PM »
how many turns on the coil? what model transistor?

nievesoliveras

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Re: Feedback To Source
« Reply #543 on: May 28, 2009, 01:19:14 PM »
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

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Re: Feedback To Source
« Reply #544 on: May 28, 2009, 01:39:10 PM »
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

WilbyInebriated

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Re: Feedback To Source
« Reply #545 on: May 28, 2009, 02:38:49 PM »
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
thanks jesus.
1 more quick question, toroid for a core?
i am leaving for the lake soon to do some fishing, so i can't say i'll get it done today.

nievesoliveras

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Re: Feedback To Source
« Reply #546 on: May 28, 2009, 02:52:51 PM »
thanks jesus.
1 more quick question, toroid for a core?
i am leaving for the lake soon to do some fishing, so i can't say i'll get it done today.

Yes, toroid for a core.

Jesus

shubhamforme

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Re: Feedback To Source
« Reply #547 on: May 28, 2009, 04:11:17 PM »
hi there,
i found your joule thief circuit very interesting,,but can we use a small value capacitor in it??? also in the circuit diagram... what is the 104k?? is it a capacitor ceramic type or a resistor???
i am trying to replicate i....
thanks
shubham......
------------------------------------------------------------------------

@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

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Re: Feedback To Source
« Reply #548 on: May 28, 2009, 05:15:28 PM »
just built it jesus. my source battery was @ 1.11v.
as soon as i connected it, it dropped to about .37v. it climbs to .58 or so and then drops back to .36 or.37 and repeats. i will let it run and see what happens.

@ shubham
104k is a disc capacitor.

nievesoliveras

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Re: Feedback To Source
« Reply #549 on: May 28, 2009, 06:37:51 PM »
hi there,
i found your joule thief circuit very interesting,,but can we use a small value capacitor in it??? also in the circuit diagram... what is the 104k?? is it a capacitor ceramic type or a resistor???
i am trying to replicate i....
thanks
shubham......
------------------------------------------------------------------------

Thank you @shubhamforme !

Yes you can use a smaller capacitor with more than 16volts.
The 104k is a ceramic capacitor that has on its face a 104 printed. Sometimes it has printed a 104k instead.

Jesus

nievesoliveras

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Re: Feedback To Source
« Reply #550 on: May 28, 2009, 06:57:03 PM »
just built it jesus. my source battery was @ 1.11v.
as soon as i connected it, it dropped to about .37v. it climbs to .58 or so and then drops back to .36 or.37 and repeats. i will let it run and see what happens.

@ shubham
104k is a disc capacitor.

Make a test.
Disconnect the two diodes going to the battery's positive.
Take an LED and connect it between the first diode coming out of the transistor's collector and ground.
It must light if your battery and the circuit are okay.
Then connect the diodes back, if everything is okay. Remember it must be a working joule thief.

Jesus

WilbyInebriated

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Re: Feedback To Source
« Reply #551 on: May 28, 2009, 07:34:14 PM »
sorry. i should have edited my first post. i got it operating properly. i think i had a bad battery, i swapped it out for another and it's fine. this one is @ 1.24V. i will let you know what it reads in a few hours.

shubhamforme

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Re: Feedback To Source
« Reply #552 on: May 28, 2009, 07:35:04 PM »
hi i have tried evrything...but this is nt working....and my battery voltage  fell from 1.23v to .7v and its gradually decreasing...also i had use 800 ohms insted of 1 k but still it does not chargs up the battery....

i dont think this circuit is a slf chaging circuit......
dd your charged up the battery???? i dont think that this will charges up.......
kindly tell me that what should be don....

thanks

Make a test.
Disconnect the two diodes going to the battery's positive.
Take an LED and connect it between the first diode coming out of the transistor's collector and ground.
It must light if your battery and the circuit are okay.
Then connect the diodes back, if everything is okay. Remember it must be a working joule thief.

Jesus

nievesoliveras

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Re: Feedback To Source
« Reply #553 on: May 28, 2009, 07:59:42 PM »
hi i have tried evrything...but this is nt working....and my battery voltage  fell from 1.23v to .7v and its gradually decreasing...also i had use 800 ohms insted of 1 k but still it does not chargs up the battery....

i dont think this circuit is a slf chaging circuit......
dd your charged up the battery???? i dont think that this will charges up.......
kindly tell me that what should be don....

thanks

Mine is still charging.
Because I cant put my camera to work for the time being, I will make some step schematics to clarify the whole thing.

Jesus

nievesoliveras

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Re: Feedback To Source
« Reply #554 on: May 28, 2009, 09:35:37 PM »
@all

Here are the promised schematics.

The complete self charger only have three diodes and a ceramic 104k or 0.1uf and it works just like that.
The other stuff is overkill.

Jesus