Second Stage Joule Thief Circuits

[resonanceman]

So Gary,
Will you be connecting the end of one wire with the beginning of the other to make it a JT primary?

I am confused right now, because I do not understand where the secondary will be?
Is the outside secondary going to be sharing a little of the cores of these? I think it must, mustn't it?
It is a similar question I have with my conical wound secondary... or whatever that is.

jeanna

Jeanna

Yes   I will be connecting  one start end  with the other finishing end  ....... standard  bifilar  JT conncetions .

WIth this configuation  if I was going for  high volts  I would  use the  external  windings  as  the primary  .

I am  going  for  MAX current  this time .
So  I  am trying to get the most volts I can from  flyback in the primary .
SO  I am using the  stack of  toroids as primary .

Once  I get my primary  wound   and  get  a good voltage from it   I  then  go to the  external windings ........the secondary
I  then tune the secondary  to get  the required  output voltage  at  the desired power level .
My  goal  is to have   2.5 V across a small cap  and bridge when I am done .

I want to have all the higher  voltage  transformed  into current .........except for 2.5 V

I can then replace the small cap with my Ultracap and I am ready to go .


Once  it is set ..... I should  be able to let it run with no risk of blowing a cap 

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

By the way .......   the bad blues are still bad .   I could not  get any real voltage out of them even with  25 winds per toroid


gary

[Pirate88179]

Hey, it works!!

I still have some adjustments to make and then I will do a video.  I am using a D cell in these photos but, the cool thing about my magnetic battery holder is that it will work with AAA, AA, C or D cells with no adjustments needed. It is not as bright as I had hoped but, since I used 2 toroids I may have to adjust the primary winding numbers a bit.  Jeanna told me to bench test this first before I put it in the box in case I had to change a few things but did I listen?  No.  Oh well.  I think I can improve upon my light output if I mess with it some.

My camera is still not clear and I need to look into why that is.  Anyway, more later.

Bill

[gadgetmall]

Jeanna

Yes   I will be connecting  one start end  with the other finishing end  ....... standard  bifilar  JT conncetions .

WIth this configuation  if I was going for  high volts  I would  use the  external  windings  as  the primary  .

I am  going  for  MAX current  this time .
So  I  am trying to get the most volts I can from  flyback in the primary .
SO  I am using the  stack of  toroids as primary .

Once  I get my primary  wound   and  get  a good voltage from it   I  then  go to the  external windings ........the secondary
I  then tune the secondary  to get  the required  output voltage  at  the desired power level .
My  goal  is to have   2.5 V across a small cap  and bridge when I am done .

I want to have all the higher  voltage  transformed  into current .........except for 2.5 V

I can then replace the small cap with my Ultracap and I am ready to go .


Once  it is set ..... I should  be able to let it run with no risk of blowing a cap 

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

By the way .......   the bad blues are still bad .   I could not  get any real voltage out of them even with  25 winds per toroid


gary

Gary  I had some bad blue also . a magnet would not stick to them  and they were like made of alu or something else . . Good job shooting for max current but do not over saturate you transistor or you waste valuable battery current

gadget

[gadgetmall]

Hey, it works!!

I still have some adjustments to make and then I will do a video.  I am using a D cell in these photos but, the cool thing about my magnetic battery holder is that it will work with AAA, AA, C or D cells with no adjustments needed. It is not as bright as I had hoped but, since I used 2 toroids I may have to adjust the primary winding numbers a bit.  Jeanna told me to bench test this first before I put it in the box in case I had to change a few things but did I listen?  No.  Oh well.  I think I can improve upon my light output if I mess with it some.

My camera is still not clear and I need to look into why that is.  Anyway, more later.

Bill

Hey !! Allright this is a nice setup . I really like those boxes also . the closest  thing i have seen are expensive cigar box full of expensive cigars . over a hundred bucks so i won't go there . The light looks good . and i like the poor mans battery holder It's high tech !

Albert

[gadgetmall]

***DELETED*** Information in this thread already .