Joule Thief

[drodenbe]

hello    conradelektro

I have to stand corrected about the value of the inductance of the coils.  My friend replicated my circuit and coil and his does not work as mine.  He has same number turns wound directly on a AA nicad battery.  He brought over today his board and coil.  we wanted to see if his problem was the board or the coil.  I installed my coil on his board and it worked ok.  I put his coil on my board and it did not work.  wave form not the same.  We were wondering why my incuctance readings and his did not match up.  I found that my new meter is way out in left field for some  reason.  So I have new values to report.  The 50t coil is 14.4 uh the 125t is 131 uh and the 250t is 1.456 mh.  So we have found that the inductance of the coil is evidently critical.  Also I found out something else about this set up that I discovered.  I have wound a couple hundred joule thief coils and never ran into a situation where it made a difference how the coil was hooked up.  Now I know that the phasing has to be 180 out from one winding to the next and if I didn't get oscillation I would reverse one of the windings but not both.  Then it would take off.  So I would mark the wires and that is how I hooked up the coil from then on.  But With this coil if I would hook up the secondary one way and have the primary 180 out it would oscillate around 1.5 mhz.  with a different looking waveform more like a sign wave.  If I would reverse both windings keeping the phasing the same in relation to the two coils it would oscillate around 2-400 khz with a pulse wave form.  I guess you can always learn something new.  I have not tried this with any toroid winds.  May not be that way with a standard toroid, but I am going to find out.  This would change a lot things as far as how something works. 

My kacher coil is 182 turns and 10.  and draws 18ma at 13.2 volts.   I can't get a reading at 5 volts.  Will have to install resistor and measure voltage drop to get current.   

One last thing.  I noticed since I have been on this forum all others have not been posting.  Only you.  I did not mean to scare every one away!  My original intent in the beginning was to give you guys this info and you could play with it and maybe you would have same results.  I was just going to dump it and go.  So since no one is posting but conradelektro I will no longer post and you guys can go back to what you were doing before I  rudely interrupted.  So good luck with your work!

[conradelektro]

hello    conradelektro
One last thing.  I noticed since I have been on this forum all others have not been posting.  Only you.  I did not mean to scare every one away!  My original intent in the beginning was to give you guys this info and you could play with it and maybe you would have same results.  I was just going to dump it and go.  So since no one is posting but conradelektro I will no longer post and you guys can go back to what you were doing before I  rudely interrupted.  So good luck with your work!

@drodenbe: Again, why are you so touchy, like an old virgin. Give people time to do something. How can you expect that people sit around till you show up and the spring into action just because it is you.

Calm down, give us your measurements and your observations and over time things start to happen. Have patiance, stay calm. You have nothing to defend and nobody owes you anything. People will show up when you report interesting things, but will not act on your whim.

Greetings, Conrad

[NickZ]

  There may be some guys waiting for further replications, to prove the point of the self runner, or very efficient JT coil made over the battery core.
I have my doubts and would need more confirmation. Most any coil will work to a some degree, but a true self runner?
  We have been at this a long time, to no avail as far as a useable self running JT type device. All such devices have failed in time. At least from what I've seen, heard about , or made myself. Or have been uselessly blinking an led, for a long time.
  You will not get much of a a response from us by being impatient. You need to prove and demonstrate the fact that you think that you have a valuable and unique device, which has been able to be replicated, before it merits much attention.

[totoalas]

HV NEGATIVE DC CHARGER 200113   YT  imtotob
Same function as a  fly swatter   I think this can be looped

totoalas

[NickZ]

  Totoalas:
   Is this the same device that burnt out the components and you mentioned that you were not going to further experiment with it? Or not?