Joule Thief

[guruji]

guruji

I  added each  diode one at a time as I built my Jesus charger .
The voltage should go up  a little  as you add  each diode .

The  Jesus  charger alone is not  enough  to  get the circuit to self charge .
I am working on  getting the part count down .........but my firsr tries required  about 9 coils  most of  them hooked up to provide both  feedback  and flyback .
Most  of those coils  were JT  coils .
I hooked  one  winding  on each  toroid in series  for flyback ........I connected each  of  the other windings  on those coils  to the cap on the Jesus charger . 

Often I connected the   secondary for flyback because it was larger .........but  sometimes  I  used the secondary for  feedback ...... it  all depends on the circuit  and the  coil .
I just  tried connecting   it and checked  the results .




gary

Hi Resonanceman thanks for your help about the Jesus charger. Do you know of a good schematic for charging same battery or can you please show me how I can modify the Jesus charger?
Thanks

[resonanceman]

Hi Resonanceman thanks for your help about the Jesus charger. Do you know of a good schematic for charging same battery or can you please show me how I can modify the Jesus charger?
Thanks

Do  you  have  at least 6 JT coills laying around?
Other coils may do but I have used mostly JT  coils .

I  have not taken  any pictures   if  my setups because I connect all the  coils with alligator clip leads .    They tend to be  a  mess by the time they are done .......

I   think  the way to go about   drawing  the schematics is to draw  the flyback  and feedback   connections in  separate drawings  ....... It might take me a day  or 2 to get  the drawings done .
(  they are not  that complex ........but time is limited )

gary

[gadgetmall]

@IST .
Hey Ist . Iam repeating an Experiment for you and verify that Yes a standard Jt using the transistor and torroid you ordered does indeed Charge a 650f cap . I am running one now for about an hour and 15 mins the bcap is at 613 V . Started was a little under 450 . So yes and probable can improve it a bit . i just wound 11 turns Bi on one  . its drawing 14 ma and lighting a secondary with two half watt leds about half bright . Again only about 22 turns on a secondary and can be improved . I'll let you know tomorrow what the V is .
Gnight
gadget

***PS*** forgot to say its running an a rechargeable  EverReady 2500mah and its volts are 1.295 and the cap is taking a 100th of a volt (last number)hit every 30 seconds its 630v now  and now its 647 about a 10th of  a volt every 5 minutes .
l8r
Edit###this morning at 7 est the v is 1390 . Jt still half bright and volts are 1.292!!! lost 3 100ths of a volt . Nothing

[resonanceman]

Hi Resonanceman thanks for your help about the Jesus charger. Do you know of a good schematic for charging same battery or can you please show me how I can modify the Jesus charger?
Thanks

guruji

Here  is a drawing of the flyback  part of the  circuit
I have added to  the  inductor  on most but not all the  extra coils .  The longer coil should  be thought of as the secondary .
Notice  that  in most cases I  have connected  the  secondary for flyback.
With 2 of the coils  I left  the windings the same  size .    I call  a 1 to 1 coil  a splitter . ( in this circuit )   It sends about half the signal back for feedback . 

Notice  there is a load.  This circuit  has to be loaded to work  properly .
My favorate load is a 90 LED array ..........but  I am outgrowing it ....... I need to find a bigger load before I burn this array out .

I am  out of time for this tonight

I will try to do the  feeback  side tomorow .

In the drawing the  JT and  the JT ciols are black
The Jesus charger is blue
Wires to the  coils are red


gary


Edit

Bill

Sorry  the  drawing is so big .
I am not that good at drawings like this
It is late , I tried to crop  the  image but can't find a way to do it with paint .
I  usually crop  with  a image program from HP ......it won't  find  it.

Please feel free to crop  the image or  shrink it down so it  fits better

[innovation_station]

thats great news gadget!

i cant wait to hear more of the tests you are doing with that big cap and aa battery ...

a simple jt powering a few leds  and chargeing a big cap that can supply massive amps ... if need be ..

just perfect!

bill you gonna join in and anyone who may have bought the HUGE CAPS...

i will use 1 " gold mines to start  and ill whip up a few diffrent ones ..

probally be like a week or so yet till everything arrives .. 

then im a wind a few good ones 

ist