Second Stage Joule Thief Circuits

[resonanceman]

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

Gadget 

I  had not thought to check the blue  toroids with a magnet
The magnet  does stick .....but just barely
I have no idea what they are made of.
If they were aluminum the magnet would  not stick  at all
They also seem a little  hard for  aluminum

I  then tune the secondary  to get  the required  output voltage  at  the desired power level .

I was thinking  about  the  current when I wrote that post ........maybe  I should  have  said at the desired current level .......but  power seemed like  a more accurate choice.



Your  big toroid looks really good .............but I would like to see you put about  a half pound more  wire on  your primary . 
More  wraps  will make more flux with the same power ....... the  toroid can  handle  the  power ......and  you have lots  free space left on the toroid  .

Scale it up!!!!!!!.

I say fill up that space ......then fasten your seatbelt ....... you aint seen nothin yet



gary

[Groundloop]

Albert,

Mail me your JT drawing in a bigger size that was in your document.
I will update the word document and mail it back to you.

I will also need a nice picture of the JT you will use in this project.

Alex.

[jeanna]

@Gary,
Thanks, I will stand by and watch.
I am not clear how you are using the external thing and how it is called a secondary if it is external??

Hey, it works!!


... 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.

Nice, Bill.
I like the magnet idea.
I wonder what it does to the juice?
I wonder if it improves it?

If I get the chance today, I will try to take an induction test on 2 toroids stacked. This could help.
The trouble is I have 1 without windings, but the other 2 are already wound.

jeanna

[innovation_station]

@Gary,
Thanks, I will stand by and watch.
I am not clear how you are using the external thing and how it is called a secondary if it is external??

Nice, Bill.
I like the magnet idea.
I wonder what it does to the juice?
I wonder if it improves it?

If I get the chance today, I will try to take an induction test on 2 toroids stacked. This could help.
The trouble is I have 1 without windings, but the other 2 are already wound.

jeanna

the external secondary ...  this is your load in a jt ...lol  the led ... lol

you can chain them toagther as  MY CASCADE AMP STYLE UNIT ...  hummmm

dont close the loop  ..  SOME SAY IT GOES TIC TIC BANG ..LOL

ist!

this is how this one works ... insted of the led or cap or battery ...  srtight run through with a fet ...

next coil is tuned to the FREQ OF THE JT...  the jt it rings the big coil ...  the second sw ... opens and closes the door as desired by freq genny

hehehehe

B T OVERDRIVE!   ...     YOU AINT SEEN NUTTIN YET!   BBBBBB  BABY .... YOU JUST AINT SEEN NUTTIN YET!

http://www.youtube.com/watch?v=7miRCLeFSJo

thank you

[jeanna]

IST,

The video link is incomplete. Please fix it!

the external secondary ...  this is your load in a jt ...lol  the led ... lol

you can chain them toagther as  MY CASCADE AMP STYLE UNIT ...  hummmm

I am asking where it is wrapped to the toroid of the primary.
It is only a secondary if the wires go around some of the same core that the primary is around.

That was my question.

thank you,

jeanna