Joule Thief

[resonanceman]

I would like to thank everyone that has  spoken up  in the safety issues  relating to  the  MOT 
Please  feel  free to  remind  us  often



Anyone  dealing  with these kinds  of  voltages needs to  stay aware of all the ways  things can go wrong  .......... 




~~~~~~~~~~~~~~~~~~~~~~~~~

I  am  currently  demoting    a microwave .
Hope to  be back in  an hour or so .



Jim  and IST

Just  to be sure ......   are you both saying I  should   put the  2 MOTs   back to back  ........so I will be   boosting the  voltage with the first .......feeding that  into  the   HV of the second .......in effect  lowering   the voltage back down ?

Then  a  spark  gap  with a  Neo magnet     between  the  MOTs  should   boost the current ?

I am  also  wondering  if   my  coils would  make  more flyback  or less  at the higher  voltage .         I am guessing more ....




gary 

[the_big_m_in_ok]

electricme said and drew this:

@Gary and All
Now get another MOT, and connect it back to back.

                    MOT 1                                                                MOT 2
           --------------------                                          -------------------------
           | secondary HV Out |                                         |     secondary HV in       |
           |  -----------------------------------------------------------------------  |
           | ----------------   |  out                              in  | ---------------------   |
           | ----------------   |                                         | ---------------------   |
           | ----------------   |                                         | ---------------------   |
           | ----------------   |                                         | ---------------------   |
           | ----------------   |  out                              in   | ---------------------   |
           | -----------------------------------------------------------------------   |
           |   primary              |                                         |       primary LV Out       |
    -----------------------   |                                         |  -----------------------------
    IN    | ----------------   |                                         | ---------------------   |    out
    -----------------------  |                                         |  ------------------------------
           |                          |                                         |                                  |
           |________________|                                          |_____________________|

                                                                                                             
      Connect above MOT to JT                                           This MOT to your LOAD

@electricme,

I read the rest of your post and agree wholeheartedly. 
Very good drawing; I was thinking of doing something similar and re-drawing Tesla's patent drawings in ASCII like you did above in modern symbols---in a new thread forum in Half Baked Ideas---but readibility in the Windows Operation System is going to be an issue for me to deal with.
(I have a whole book on Tesla's inventions to use as a reference.)

Next thought,
Your drawing above is something I had considered in the past to be able to step up voltage(s) partially for certain applications requiring specific voltage(s).  But in regard to CEMF, is there counter-counter EMF in the second transformer to contend with?  Will it work against itself? 

I admit ignorance:  Was this even a consideration you might have had?  It was just something that crossed my mind.

--Lee

[resonanceman]

@MK1,
About adding a magnet to a joule thief toroid...

My first joule thief, which I made in the winter of '07'08 was made on a toroid-shaped ferrite magnet. It worked, but not as well as some others, and after a week it gave out.

It seems, the magnet had done something to the silicon transistor, or to the doping, or something.

I reused that transistor just to be sure, and it worked fine, but I had to take it off the magnet and wait a while.

BTW, it was this experience which gave me the impression that the 3904 was not as good as the 2222. But what was really happening was something to do with the magnet.

I do not know if it is correct to say that the magnet had "saturated" the transistor, but it was a sort of saturation effect.

So, please keep a magnet stuck onto a toroid joule thief for a week or 2 and let us know if it changes your joule thief operation.

All information on this is very helpful.

thank you,

jeanna

Jeanna

Interesting idea to gest .

If   you are right  and the magnet  does  affect  the  transitor  I think  you may have found  a  different  kind of energy ....  not  exactly magnetic ,,,,, not exactly electric

Do  you still have   any of that setup ?
I am  wondering    ....... the leads of some parts  are  iron rather  than copper ....... can  you find out if the leads  to the parts in that circuit  were copper or iron ?
If they were  iron and  in  direct  contact with eachother  ......it could  have made a  flux path  for the magnetic  flux through the transistor .

I am  assuming  if it can  affect the transitor ....... we should  be able to  find a way to  use it to our advantage ..........maybe something  trying to create a flux path in  one leg of the transistor  at a time .....  it is possible  that  it might work  better  in some way  with  the  right magnetic  flux flowing .


gary
gary

[jeanna]

If   you are right  and the magnet  does  affect  the  transitor  I think  you may have found  a  different  kind of energy ....  not  exactly magnetic ,,,,, not exactly electric

Do  you still have   any of that setup ?...
If they were  iron and  in  direct  contact with eachother  ......it could  have made a  flux path  for the magnetic  flux through the transistor .

I am  assuming  if it can  affect the transitor ....... we should  be able to  find a way to  use it to our advantage ..........maybe something  trying to create a flux path in  one leg of the transistor  at a time .....  it is possible  that  it might work  better  in some way  with  the  right magnetic  flux flowing .
gary

Hi Gary,
I do have one of them. I made 2 right away but after they both stopped working, I remade one and the other is still on the magnet toroid.

I dunno.

I think magnetism and electricity are the left and right sides of the same body.

If the flux stops because the whole thing is too much magnet, the electric part won't do anything.

The reason I think it is stopping the transistor, is only because it took a week to stop working.

The fact that it never worked as well as later ones is probably caused by the lack of pulsing from too much steady magnetism... coming from inside the toroid.

The wires and leds etc are all the same parts I have used in these tests. The led is the original white from the 30led array vintage.
These are cheap ferrite magnets from RS.

Whatever you have in mind please try it.

jeanna

[resonanceman]

Whatever you have in mind please try it.

This  will have to wait  for a while
I am pretty sure the effects will be  small .........but  could be helpful

Just  wondering     ...........if  some  magnetic affect  does  affect  transistors   what can be done with this ?

If  a magnetic  circuit  was  created  using   ONE of he  legs of the  transistor   it might have some affect ........   switching  the   direction of the poles could  change the  effect.

I am thinking of the peltier effect  ,   if   electrons  crossing  a PN  junction  create a  temperature difference   ......  it is possible  that  this  flux effect  might do the same thing ...... if it did  we would have  a magnetically  cooled transistor .


gary