Joule Thief

[gadgetmall]

@ gadgetmall et al

I edited the post already a page back at http://www.overunity.com/index.php?topic=6123.msg156351#msg156351

Can we use the voltage at the LED as the driving voltage for a 24 LED JT without affecting the Solar Panel circuit?

Regards,
Paul

it depends on the ma's of the output circuit  and if your Jt is modded with the Jeanna secondary and GM current mod . its possible . is your cell going to cut off the leds in the day ? is then yea it should . i have ran jeanna s circuit now almost 3 weeks and it still is lighting the whites and red .. the green and rainbows are not lighting anymore .  on that ring are heavy current eaters . 1 watt each . they are bright . but i got it modded on My jt circuit with jeannas secondary lighting all of them for weeks on a Nicad . so its very possible if your circuit shuts down the jt during the day ..i day of charge should give you days of light with one jt .

[gadgetmall]

About a month ago?? maybe Jan 1 or so, I posted a pic of my jt lighting 30 leds off the secondary only.

This would have no effect on the circuitry for the solar panel, I believe.

I was using a basic toroid wound with 11 bifilar wires and 20 turns max. 1Kohm resistor at the base of a 2N3904 transistor

I stopped at 30 because I ran out of leds. These were 10 in series and 3 deep. So, it was good either way.

In fact, I just came to report more disappointing results. I have yet to improve on that first circuit.

jeanna

this is the one with one loop secondary . thats the one i have ran for three weeks off one half dead battery . good circuit  folks .. !! .

[innovation_station]

in the cfl curcuit what if we changed the cap on the input of the curcuit...  to a lower value ...  also ...  it has 2 hv outputs  .... 

how many strings of 100 leds might 1 light now ??   it may draw more from the source but we are not done with this little gem yet ...


ist
 

[TheNOP]

@ gadgetmall et al

I edited the post already a page back at http://www.overunity.com/index.php?topic=6123.msg156351#msg156351

Can we use the voltage at the LED as the driving voltage for a 24 LED JT without affecting the Solar Panel circuit?

Regards,
Paul

if it has an equivalent circuit then my garden lamp, no.
not without modification or you risk damaging the switching circuit.

yes, if the diode in your garden lamp can withstand the reverse voltage the jt create.


Edit
i managed to pass 270 miliamp trough the switching circuit, untill the battery showed .9 volt, without frying it.

the ni-mh stated 300 miliamps but a can only get 270 max out of it, cheap stuff, but for 2$ i won't sue the maker.  ^^

[Goat]

it depends on the ma's of the output circuit  and if your Jt is modded with the Jeanna secondary and GM current mod . its possible . is your cell going to cut off the leds in the day ? is then yea it should . i have ran jeanna s circuit now almost 3 weeks and it still is lighting the whites and red .. the green and rainbows are not lighting anymore .  on that ring are heavy current eaters . 1 watt each . they are bright . but i got it modded on My jt circuit with jeannas secondary lighting all of them for weeks on a Nicad . so its very possible if your circuit shuts down the jt during the day ..i day of charge should give you days of light with one jt .

Yes gadgetmall the solar panel has a light sensor and will "cut off the leds in the day".