Joule Thief

[jeanna]

It is interesting that the company trade-marked the name joule thief. I don't know if that was dumb or smart.

@Ist,

nice videoes jeanna !!

thanks.

Here is a question for today:
If you can figure out how to use pulses that are REALLY fast, (voltage ones) then make an earth battery. I hope your new place has some ground.
I am seeing waves of volts that are 5mV with a standard earth battery and ~35-65mV with stubblefield coils added to the outsides of the earth battery.
This is NOT shown on the DMM.
It is something that rides above the stuff the DMM picks up and calls dcvolts. It is pulses. The quickest I can see are 5.55MHz.
I am on it, but I think many of us should get on this and make something happen from these very high frequency pulses that have not very big voltages.
They COULD be taking the place of the transistor.

In the joule thief the transistor cuts up the 1.2 v into high frequency. then the back spike greatly amplifies the volts.
Would it not be very cool to use the free pulses to make high enough volts to run a secondary-joule thief? Or even a basic one.

I am starting to catalog my already existing inductors.
This earthquake swarm is making my head swim. Pic is a peek at some from today on the official site near the swarm..(I think)
I need to focus hard to stay on it.

jeanna

[jeanna]

Someone asked a while back if the toroid was special or could we use a straight cylinder.
I cannot compare the flux of these right now.
but
14 turns around an antenna makes an inductor of 4uH
14 turns around a high flux stick of ferrite makes the inductance 9uH
so fine that is more than double
but get this...
Using the same wire I wrapped it 14 times around a new toroid I just got
.495mH   (!)
Here is the really cool part.
If the wires are all jammed together on the antenna and on the ferrite stick, the inductance goes up by about 1uH so from 3uH to 4uH or 8uH to 9uH.  (aircore is 3uH to 4uH for these 14 turns)

On the toroid the wires can be jammed together or spread around the entire toroid and it changes NOTHING.

So, I think the answer is. There is something very special about the shape of the toroid.

I am psyched. This is going to really help.

jeanna

[innovation_station]

theres 180 acers 5 min from the beach!   just perfect for the largest GREEN ENGERY TECHONALGY EXPO 2010   

gotta get get GREEN

ist!

[Mk1]

@all

My latest build scalar jt , really directional both leads are going in the same direction but different spin direction , unlike the regular bifilar jt witch is reverse direction and reverse spin . You take both leads form one side to positive rail , not opposite like basic jt.

With interesting results ... more on that later . Once i test it one my regular toroid .

Also the 3jt , the secondary was put on first and is made of 40 turns 24 gauge bell wire, the 3 jt are going in the same direction reverse spin , i only tested on jt at a time , the secondary shows between 150 and 170 volts light neon really nice one side ...

And the last one not finished i posted a drawing of it once inspired by a picture posted by !ST

Mark

[resonanceman]

hello everyone

nice videoes jeanna !!

i have been packing and uncovering tresures .... lol 

so i found some big O  i had from when i built the IST CORK SCREW  unit ...  4 channel ..  any how i refound it .. 

cut 3 ribs off it and wound 2 coils on it like newman style but i was thinking of jt'int the 2 4" aircore coils ...    then i could do a few things with it  like put my inductor cap ring inside of it .. 

i used 28 gage 150 turns x2

ist



being that there is no iron in this ring feroite or anything like that it will set up an external feild ..  that will be expanding and on the colpase it will be contracting ... so  this is actually almost free if you use it as a jt ... i think just bringing a inductor close to the changeing electro magnetic feild ....  will cause engery to flow in the inductor winding ..

as the old formula says the closer the windings on the bobbon meaning the witdth of the electro  coil  the stronger the magnetics produced .. so if i used really fine wire and mannnnny turns ..  i could make a really strong feild from a really week source ...

then its only a speed thing ...

here is a pic of a cheeply made coil

IST

I am looking  forward to  seeing  how this  works out .


Do  you have any links  or anything  on  stuff along this line ?
What you  were talking about  sounds kind of like a project  I have been thinking  about for  a while .


gary