Joule Thief

[innovation_station]

verry nice coil mk1..

i did notice when i reverse polarity on the neo ..  it pops into a great place all  by its self .. and if i reverse the polarity of the neo it is a little off center ...  hummmm

1 way it fits on its own this seams natural to me the other it wants to move from the center of the neo ...

could be that my angles are not just perfect on the cut

ist!

so many ways to play ...  but it all comes back to the off and on ... aka THE KICK 

[nievesoliveras]

Are you looking for this?
I think this is the transformer Freezer used a while back. I always wondered why he made his light then left. Oh well, different styles.

Are you looking to find it? or are you wondering if I would try using it?

jeanna

I bought it last year, but it was now that I put it to work and I got very impressed on the bright output of the cfl.
I tried to run it with a joule thief using the technique you taught me to get leds lighting and I made the toroid to give 15 volt on the pickup coil and tried to run the tad170.
The voltage on the meter dropped to about 1 volt.
I increased turns and kept increasing the voltage to 120 volts according to my DMM.
I connected the circuit again and the voltage dropped again to about 2 volts and the circuit did not work.
I added a 2200uf 50v capacitor to the rectifier and tried again.
The spike produced by the capacitor burnt the 2 transistors of the tad170.
I began to repair the tad170 with a writing in wood iron I have and while I was repairing the circuit it seems that I left the power supply on and the two wires with alligators on them got together for a long time, that is why I dont have a power supply now.

I would like to learn how that tad170 transformer works on the inside, because it turns a cfl on brightly an with just a few parts, that I asked you if you knew about its windings, because you are always experimenting with transformers, earth batteries and wires.

Maybe I did not answer your question with all these words I wrote here.

@ nievesoliveras

Can you post a link to the circuit diagram or post it here? I think that to be fair in comparing performance the total input power (amps times volts) should be compared with how bright the bulb gets. Maybe you have found a better performing circuit than the JT.

I dont have the circuit. It is the Tdk Tad170 that @jeanna posted here: http://www.overunity.com/index.php?topic=6123.msg195824#msg195824

@ Jesus:

Just to point out that, as shown in Jeanna's posting of the circuit board, it is a CCFL not a CFL.  Wilbyinebriated made a nice light from a small beer keg and some CCFL bulbs.  It is way back on here but you might pm him and see what circuit he used for it.

Bill

The one I lighted is a gutted screw like cfl bulb. Maybe it is called ccfl instead.
What I am interested is on getting the way the Tad170 transformer is winded because it is very powerful.


Jesus

[Yucca]

playing with my flyback I seem to be measuring slight OU measuring Pin and Pout with low inductive resistor and a digital storage scope when operating in very low power mode, COP appears to be approximately 1.5? This will be seen as nonsense and hot air unless I can close the loop. How to downconvert to selfrun? I will set about making a switched capacitance power module to get back down to 4V from 1kV, this will incur maybe 10% loss to drive said circuit, but if what I am seeing is true then it should slefrun after a kickstart, it would be no where near 1W excess so the OU prize will be out of reach, more like 10mW excess (if it works). My only worry is that inductuve aspects of the 1ohm shunt resistor is skewing power measurement? but I will see, it is damned efficient if nothing else.

[jeanna]

@all

I included a download in this post , on multiple core transformer , really interesting ...

hmmm
Thank you Mark,

this really is interesting.
I was trying things yesterday and for the last 2 weeks.
I think I got to about page 4, but I didn't know what it was.

Thank you, now I know where to go next!

jeanna

[jeanna]

I bought it last year,
...


I would like to learn how that tad170 transformer works on the inside, because it turns a cfl on brightly an with just a few parts, that I asked you if you knew about its windings, because you are always experimenting with transformers, earth batteries and wires.

...

I dont have the circuit. It is the Tdk Tad170 ...

Jesus

OK
Since you bought it last year you know that it came from the goldmine. so that is answered.

I believe freezer would know.
He may have even answered the question of the transformer. He used it to light a fluoro in late december or ealry january. He provided some kind of schematic, but ... it is way back there.

I understand what happened to you.

The joule thief produces an ac.pulsed dc output.
It will not ever be a good input for another joule thief or similar transformer unless it is rectified. As you found out once rectified it acts like a battery input with very high voltage. When that is run through another amplifier it will melt things if they are too close!

thank you for sharing these results,

jeanna