Joule Thief

[jeanna]

@xee2,
Try 2T,6T instead of 5T. I saw a big decrease in output going from 6T to 5T and maybe 7T is still better??

@All,
I think I have a pdf to share.
I made a chart to compare the mk1-jeanna hybrid with the plain solenoid.
The results are that the special winding shows slightly higher volts in each case, but not much.
What seemed to improve with this design was the stability, but it is hard to say on one example,
But, I keep thinking I am going to find something but when I devise a test, it is unclear.

In fact this winding has doubled the results over what I had been using more than a couple of times, until yesterday with the J type toroid.

I also tested the winding at a few points comparing the2N3904 transistor to a TIP31C.
This makes a really big difference in the volts output.

But again I was using the same transistor when I "discovered" the big difference in this winding.

Then I thought to be sure I was not showing lower volts on the solenoid type because the battery had been used a little I put in another newly charged battery.

Yikes, the newly charged battery showed half the volts 

I had 2 other newly charged batteries and they showed still different voltages, one even higher than my first trials. 

The battery voltages were not consistent with the results.
they were all over the place.
I did not chart them, but here they are.

1= the test battery 1.36v gave 411v in test
2=battery 2             1.43v, gave 147v in same test
3=battery 3             1.38v, gave 321v in same test
4=battery 4             1.37v, gave 520v in same test

go figure!! 

Here is the chart that compares the winding by steps to the same number of turns in a straight solenoid style wind.
Includes info on 2 different transistors.

Please let me know if it is unclear.

thank you,

jeanna

edit:
There is one more thing to report which is amps draw.
I only checked the ampsdraw on the TIP31C, but it is the very same 150-160mA that I have seen on each of my jeanna's lights that use that transistor.

If there is anyone else that uses both kinds of transistors, I would love to see some comparison data.

[Mk1]

@Jeanna

Interesting , can you see a difference in wave shape ?

Also can you light led for the jt and secondary at the same time , try the led both ways.

Anyway great test !

Mark

http://www.disclose.tv/action/viewvideo/35388/The_LightPhenomen_In_Norway_NEW_ANGLE_Video_Clip/

[jeanna]

@Jeanna

Interesting , can you see a difference in wave shape ?

Also can you light led for the jt and secondary at the same time , try the led both ways.

Anyway great test !

Thanks Mark,
The wave shape is singular and spiky on both kinds of winding styles.
I do not see the complex shape I always do with the MK1.
It was the first thing that startled me when I did the new winding.
(If you recall, I was trying to make a 3 phase winding.)

I will look. I doubt it since the spikes are all going one way, but I will come back and report.

jeanna
edit
No,  polarity is strong. The lights go on in one way.

[xee2]

@ jeanna

@xee2,
Try 2T,6T instead of 5T. I saw a big decrease in output going from 6T to 5T and maybe 7T is still better??

There are always more possibilities to try. But it seems to me that 2b & 10c or 3b & 13c provides largest output power with an 80 turn pickup coil. I will next try using a 250 turn pickup and see if they are still best.

I posted how to do the test so that you and others can try different combinations if desired.

[Pirate88179]

I am still attempting to tune my Jeanna Light large toroids (2) circuit for best output.  I have been removing the winds from my collector windings one at a time.  I started with 13 and am now down to 8 and each one I remove the output goes up... a lot.

When I first made the video about this, I found it strange that I could grab the connections to the CFL and not get zapped, even though this was already putting out more than my Fuji which has zapped me many times.  I didn't understand this, and still don't, I just figured that maybe the freq. was so much higher that it could not penetrate the skin on my fingers.

Well, now that I am down to 8 turns and still removing them, I touched the connections to the CFL and got one hell of a zap!!  So, if my original thoughts were correct, I guess this means the frequency is coming down and the output is still going up.  This does hurt.

I will continue to follow Jeanna's suggestions and keep removing them until I see it go the other way.  Right now, it is calling for a 45 ohm base resistor where I started with a 25 ohm.  I have about 330 turns on the pick-up coil and now only 2 on the base instead of 3.  Now I have to be careful not to get zapped again!!

Bill