Joule Thief

[jeanna]

  @ Crowclaw and All:
   Thanks for the reply.  If one was to make a very powerful Jt circuit, and then be able to reduce the HV and bring up the current instead, using a transformer.  So, lets say you have a Jt that can output 1000 volts, and you then convert that down to 120 volts (or to 12 volts), but now with higher amps. How many amps would you get? Has that it been done by anyone?
          NZ

Hi NickZ,

I would like to add a few comments to the excellent answers already given.

I tried to make a step down light a tiny filament bulb a few months ago.
(  what is time? I think sometime in the summer)
I got a 5 volt christmas bulb to light for a half a second from a 1000v secondary.
I awoke today with an idea about this combined with kooler's excellent use of additional inductors in SERIES with the JT circuit at the battery, but I have not tried it.
In Patrick Kelly pdf volume 10 I saw a clear circuit drawing of the way to change the spikes to a smooth dc current out of the secondary. I kept asking for this a while ago and got no clear (to me) reply, so I suggest reading it.
[It was a bridge followed by a capacitor going to the output. I guess the cap needs to be just the right size.]
I want to try this because it might give the arrow to the next path to try.

Mostly I am interested in what has not been done. Like lighting ones house using a Jt technology,  as in self running, self charging 12 volt Jt System that can light up a household with low voltage incandecent bulbs or warm whites Leds. The questions is, is it worth the extra work to accomplish it using the regular incandecent bulbs. Maybe it is a "Fools Errand" like Bill says... But CFLs and superbright cool white Leds are a very unpleasant lighting option for me, even if it were "free energy", but, possibly the warm white Leds will do.
            NickZ

Exactly!
I think we all are.
I learned a lot by the experiments I have done.
I am still wanting this and I imagine I will use my experience to get there.

As Gary mentioned I like the warm color added to the bright color.
It is remarkable how much difference it makes, but the warm led bulbs are so much dimmer, I am fiddling with adding the 2 together so I do not need to factor in how much light I lose when adding the warmth.

I was able to read for 3 hours when I added 5 series yellow leds to a 24 leds camping light. Neither was a jtc, so this is regular direct current lighting.

When using just the 24 leds camping light, I can barely see the page and can only read for 20 minutes max. So, I will be experimenting with a jtc with 2 secondaries. One with many white and the other with a few yellow.

-----

And finally,
I made a conical bifilar coil and found that when it was added to the secondary wires of a toroid the waveform was a ring.
It seems to self resonate.

The way I did this was I first made a jtc with secondary.
This secondary had only a few turns around the toroid.
Then, I  made the conical coil with 2 wires and connected the end of one to the beginning of the other.
This is now a lot like the pancake coil.
I connected the beginning of one cone wire to one side of the secondary, and the other end to the other wire of the secondary.
This makes a conical coil that is being pulsed from the jt toroid as any other secondary is, but, the results while lower voltage ring.

I think this should be scaled up.
the cone of wires is really hard to make. and harder to show because it needs to be taped down or it springs away.

jeanna

edit
It was chapter 12 page24.
I took a screen shot.

[NickZ]

   Jeanna:
   Thanks for the very usefull information about the warm whites being dimmer. Maybe, then the 12 volt Warm Whites would be the bulbs to use, for more light. The 12v warm whites (Straw Hat) 140 degree, come in 0.5 watt, 1.0 watt, 3 watt, 10 watt sizes.  I have not gotten my hands on any yet.   I may have to order some from Ebay or...
   http://cgi.ebay.com/20-PC-0-5-Watt-StrawHat-8mm-140-WARM-White-LED-90Kmcd-/250448852092?pt=LH_DefaultDomain_0&hash=item3a4fea347c
     Has anybody tried them?    I'm not concerned about their higher current consumption, as I plan on providing steady input to the run batteries (or caps) and to the Jtc, from adequate solar panel(s).  Although I'm still very interested in a device that self runs, even without the solar panel. Possibly by just using a single run capacitor to start and run,  and also self charge itself , with no second charge batteries, at all.  Yes... No?
                        Nick

[Pirate88179]

Pirate, thanks for starting such a great thread, unfortunately in the last 2 weeks I've only got to page 79 
So I'll catch up with you all..... sometime next year 

Mostie:

Thank you for your kind words but, the credit belongs to all that have participated, experimented and shared here, and are still doing so.

I do not envy your reading from the beginning but, there is a lot of great info there as well as detailed, successful experiments done by our many members.  You can also follow our paths to discovery as we learned newer and better ways to make the JT what it is at this moment.  This all started with the MK-1 circuit.

Welcome to our group.

Bill

[resonanceman]

   Jeanna:
   Thanks for the very usefull information about the warm whites being dimmer. Maybe, then the 12 volt Warm Whites would be the bulbs to use, for more light. The 12v warm whites (Straw Hat) 140 degree, come in 0.5 watt, 1.0 watt, 3 watt, 10 watt sizes.  I have not gotten my hands on any yet.   I may have to order some from Ebay or...
   http://cgi.ebay.com/20-PC-0-5-Watt-StrawHat-8mm-140-WARM-White-LED-90Kmcd-/250448852092?pt=LH_DefaultDomain_0&hash=item3a4fea347c
     Has anybody tried them?    I'm not concerned about their higher current consumption, as I plan on providing steady input to the run batteries (or caps) and to the Jtc, from adequate solar panel(s).  Although I'm still very interested in a device that self runs, even without the solar panel. Possibly by just using a single run capacitor to start and run,  and also self charge itself , with no second charge batteries, at all.  Yes... No?
                        Nick

Nick

I have not tried  those  particular LEDs
I just got some  of these.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=390226502032
I chose 10mm because I think  they will dissipate the heat better than a smaller sized LED.

I have not built anything  with them yet.......


About  your  self charging   system.
I do think it is possible....... but  lets not  start using the OU word  alot  around here.
If you  claim  over unity  the OU  vultures swoop  in  and take over the thread........they make lots of requests  and spend alot of  time telling why there viewpoint is the only  one that can possibly work.

A typical vulture request goes something like this........of course I am paraphrasing a little.  " would    you please  do  these  expensive and time consuming  tests  ?  I want to discredit you and make  you look like a fool  but I don't want to spend my own time and money doing it.... "






Quite a while ago I spent months   playing  with  adding  extra coils  and  feeding  the output  from them  back to the  battery.
I got  it to recharge ...........but  it  usually took  about  9 extra coils...... it also was not stable........ I had to adjust the  resistance of  my pot every few  hours to keep it self charging.
I now  believe I know  why that adjustment was needed.........and I am working on a more compact design.

I hope that you keep working on  it.
JTs create lots of  back EMF.......conventional  education will teach you how to avoid the back EMF but it  will not  teach you how to use it to your  advantage.

If you wish to experiment with the  feedback  stuff I have just talked about........ start  with a  good strong JT.......then  drive a load  with it......I usually  used a LED array...   
Then   try  adding   inductors  in series  between the  JT and the load.
Each inductor  should have a secondary.... the secondary  will  be hooked to a bridge ......the bridge then connected back to the battery.
I used a meter on  both the  JTs secondary voltage and the  battery voltage.
After I had  put 8 or 9 inductors  into the  circuit  both the battery voltage and the  secondary  voltage both start to rise.
Keeping the  power level  low seemed  to raise the effiency  of the circuit.........
I hope to  get  it down to one  coil for the JT and one  coil for feedback........

One  thing........do not try the feedback  circuit  with no load..............for  it to work  you MUST have a good current  flowing through  the extra coils.


gary

[NickZ]

  Gary: 
   You just blew my fuse...  I'll have to reset and let it soak in...
                                                               NZ