Second Stage Joule Thief Circuits

[Pirate88179]

Gary:

I got my 4 the other day of the part number you posted.  Their distributors have a much lower minimum so these appear to be available.  I am using two of them stacked together on my Jeanna Light replication.  Evidently, we can get more "samples" after a week's time or so.  I really think that if I asked for 10 of them, they would have sent 10.  I just didn't want to be greedy since they were free and all and I actually would have preferred to pay for them but, as you said with their minimums, it is not easy.

Bill

[resonanceman]

Gary:

I got my 4 the other day of the part number you posted.  Their distributors have a much lower minimum so these appear to be available.  I am using two of them stacked together on my Jeanna Light replication.  Evidently, we can get more "samples" after a week's time or so.  I really think that if I asked for 10 of them, they would have sent 10.  I just didn't want to be greedy since they were free and all and I actually would have preferred to pay for them but, as you said with their minimums, it is not easy.

Bill

I guess  you  got  your sample  cores from  Magnetics   ...... not from one of their  distributors .
I spent  a good share of the day reaserching  what is  available .   

I put in a price  request for  the largest  one  I found  in  listed as  being  stocked by  a distributor .
3.3 in ......... we  see what happens


gary

[jeanna]

Has anyone  bought  some 0W48740TC toroids ?
....

It turns out that Magnetics  has a minumum  of $25000.
They  do have  distributers  that sell  small quantities .
.....
The largest  W core  I  have found  so far is 85.7 mm  OD 

The free samples  are great .......but they are kind of a dead end  if you want to make more than 1 or 2

Gary,
Yes, you are right about the dead end part.

That 0W48740TC  is the one I used.
I will be getting a J type to be sure the one I used was a W
I am also getting 2 that are 2.5 inches of the same 2  types to see if a smaller radius will be good enough for a cfl.

There is a distributor who sells with a $30 order size in Califurnia.
25,000 wow that is really high.
So, if one of us can buy from the distributor and sell to the rest of the joule thievers, it will be a good market.
I got a per piece price from the distributor of 2 cents to 2 dollars which means this would get a retail price of $4 or $5 plus shipping for the biggo.
I paid $3.50 plus shipping for mine from allelectronics, and 4 or 5 plus shipping is reasonable if someone wants to do this.

jeanna

[WattBuilder]

Hi,

Here’s a picture of my toroids that just came in today.
I may decide to use them for my loop back circuit or just make a joule thief attached to the turbine. I will still need to think it through before I get to that point.

Howard

[gadgetmall]

Hi,

Here’s a picture of my toroids that just came in today.
I may decide to use them for my loop back circuit or just make a joule thief attached to the turbine. I will still need to think it through before I get to that point.

Howard

Are These From Mag-inc samples also . I have got 4 jeanna core and they are super . I sent one to a good friend here on the internet for a Christmas present . As a matter of fact i sent quite a few packages out , more than i have bought for my own family  so far ! Just call me Santa Clause and I do love giving and it helps me get into the Spirit of Christmas . Speaking of which is only a wisp away so i got to get busy . i havent even put up the tree yet . The Yard Is UNDER WATER as with the Earthbatteries . 0  output . shorted . My drive way is now a pond /mud hole . you can imagine what my new White truck looks like