Joule Thief

[nievesoliveras]

@all

It would be good to make a toroid like this one:
http://in.youtube.com/watch?v=CHvuty37bTE&feature=related
Any ideas?

Jesus

[Mk1]

@nievesoliveras

Don't worry about the tpu,that will come in time, lets let people get the basics first, Then the sky won't seems so far after all.
I think we could make a better one , there is to much energy , it needs to more efficient in picking up excess losses , that way its not going to heat up. The main difference , in the 3 coil is the way the use them. It could be one of tow things , first way of doing this.

The first coil magnetize the core dc , second coil pulses with ac , the third one is the pickups coil. Steven never said there was no battery(he said no big battery. By tuning the ac freq close to the core resonant freq,to close will destroy the core.
(so one could take a magnet to replace the first coil, and make a good pickup coil to get a decent operative heat generation.)

The second way we are working on it as it is.Now we have 1 freq going on my double jt i had 2. One step at a time 

Remember it takes very little energy to create a magnetic field.The limits of the magnetic field are not calculated in volts or amps.
In that state magnetic is only limited by the pickup coil.

[jeanna]

@jesus,

yup

I can't see the youtube videos this week but I saw it was steven marks.

Hey, One for each home 120v 20A or so...

We just need to do it in public so everybody can make their own. We need to make em so everyone has instrux... etc.

lets keep dreaming and making turns. sounds like a dance.

@MK!

Without the neon, or diodes, I only have my dmm.

What does your toroid show when it is just the first bunch of turns? (the 2 sets of 26 and the 2 sets of 7) VAC . My dmm has never really been able to display much in the way of vac, but with this it shows up right away.

What I am asking for, is your dmm results from just the thing you and jesus drew last night.

I need to sand the ends and take some more measurements and I will share mine.

ooo la la.

jeanna

[innovation_station]

@nievesoliveras

Don't worry about the tpu,that will come in time, lets let people get the basics first, Then the sky won't seems so far after all.
I think we could make a better one , there is to much energy , it needs to more efficient in picking up excess losses , that way its not going to heat up. The main difference , in the 3 coil is the way the use them. It could be one of tow things , first way of doing this.

The first coil magnetize the core dc , second coil pulses with ac , the third one is the pickups coil. Steven never said there was no battery(he said no big battery. By tuning the ac freq close to the core resonant freq,to close will destroy the core.
(so one could take a magnet to replace the first coil, and make a good pickup coil to get a decent operative heat generation.)

The second way we are working on it as it is.Now we have 1 freq going on my double jt i had 2. One step at a time 

Remember it takes very little energy to create a magnetic field.The limits of the magnetic field are not calculated in volts or amps.
In that state magnetic is only limited by the pickup coil.

@ mk1 ......  and i thought i was nuts ... 


ist

so let me get this right    speeker magnet core..    7.8hz resonant freq   control coil wound around magnet  pulsed ac ...  not too close and a heavy gage  pick up coil....

my question is make the control long ?  like many times around the ring ?   on top each other?  all 1 dirrection or just 1 lap ?

i might just whip 1 up dubble time ...

sure makes wicked sence to me!


nice post!

[TheNOP]

the joule thief look like a simple voltage amplifier to me.

someone tryed to light a led(s) and see how much current it draw at various frequencies ?

might also worte trying high voltage while limiting current too.