Joule Thief

[gadgetmall]

@all

I also know this now ...

What could i have new to say ?

Nut much , but if i was to try this i would first try to find the best gauge for the jt side (bigger wire ) then try the match them gram for gram , since they will have the same mass and materiel they will share resonance at any freq.

The smaller you go on the secondary side , bigger resistance higher turn ratio for mass , same mass smaller gauge .

I think this will make sure that the current is not lost due to unmatched weight ...

Depending on the winding direction you get different sine wave .

Winding rotation direction , can help setting kick generation (+or-), when working with multiple core.

I hope this will help

Mark

I always work on lowest miilamp input .Mark, being were flashing to the past maybe post the best cap charger you made . this is second stage Level two . how fast can we charge LARGE  super /ultra caps .
Gadget

[Mk1]

@gadget

You know it ...

Many turns on the jt side usually reduces the amp needed, i think the longer they are more chances to trap some energy within the coil between kick .

When i us the short ones is to make insure that the will be flushed out.
I believe that way the kick is not slowed down from the slow emptying of the longer ones .

So i do it to get a clearer kick.

I hope this makes sense to you .

I did get really low mili amps input on both types .

Now the same mass issue , you have the two jt coils kicking , how much energy can be stored in a coil(like a cap) the secondary needs to have the same potential , to minimize the losses .

That could be done many ways but the coils are from the same material and same weight , will have the same natural resonant response at any freq .

Like guitar strings tuned together pick one the other will move , if you had 2 exact same diameter strings you can tune them to any note pick one and the other will react much more violently , you get the idea ?

I still have not used your tank circuit .

I study coils for now ,lol i will get to other stuff like trany and circuit soon.

Mark

The kick is the same but the the loses form the secondary close to eliminated .


Edit btw i don't super caps or any thing close to it , but any cap will do.

you test for speed , smaller cap help wit faster evolution waiting over 10h to get results is my thing , but i can also compare the secondary  output compared to the pickup .

[xee2]

@ jeanna

Thanks xee2,
I was there yesterday, but I was unable to find a starting point of reference.
The tor-60 was not one of their numbers, because they discontinued it, and the dimensions 3.38" are no longer used for the same reason, and I don't have enough info to start.

You were the person who wrote way back what the mu value for this toroid is.
I did not save that,

I am glad you have shown up today.
What is the mu value for that bog toroid?

thank you,

jeanna

Part number for the 3.38" diameter toroid is:  OW48613TC which is their W material.

Most of the data I have was in the design guide which use to be at following URL (but now must have a different address for a new guide). This is the old URL which does not work now for me: http://www.mag-inc.com/ferrites/fc601.asp

Here is some data:

[Mk1]

Next step in basic jt true ringing .

Find a core made for metal ring , not any toroid shape !

You hang it from a string then hit it with something hard , if it doesn't make a sound you can hear then find another one for now .

One you got one connect a microphone to your scope , find the ring freq.

Built the jt with that precise freq in mind , then ring it !

[innovation_station]

love it ! 

well said! 

ist!

mk1 you realize im gonna have to make a video of this now ... lol

i was just given a 1000 foot spool of 14ga solid coated green wire ..  i have like 40 of those steel cores ..  i will bang 1 and do as you reccomend ...