Joule Thief

[Mk1]

@TheNOP
Yes it is simple, except went you built on it ,lol. Welcome!

@ist

Glad to see you back! The geometry and the overall design , will produce so many variables, it hard to say what won't work when done right.

@ Jeanna

Its time to go the the diodes, i will post a new method of testing coil, so If you can't find one , i guess you should find some in recycling electronic equipment, they are every where,You will do good mother nature likes that.

[jeanna]

Hi NOP,

Have you been making this? It seems anything but simple.

C'mon... join the fun!

@All
About 2 hours ago I continued with the secondary I was winding last night. I had wound 26 turns 13 each way as mk1 describes. It looked to me that I had enough wire to finish if I continued. I figured this was the best way to not wind it backwards. ut, I ran out at 18 turnes.

So, 26 on the left side and 18 on the right, but not even. 13 turns on the first layer, and only 5 on the second layer.

I checked how it looked before I took it apart.

The lights went on nice and bright.

I had
0.6 VAC from Collector to + of battery
1.9 VAC from the emitter to the + battery
7.1 VAC across the whole array of 30 from the first - to the last +.

(This array voltage was already up from 4.3VAC which was just the 1 secondary on one side.)
The other part of this that is cool is this:

Remember how I could only get a reading across the neg to neg of the led pins of the array - or pos to pos, but not from neg of first to pos of the last?

Well, I checked with the DC side of the voltage after I saw that I had something AC across the whole thing, and I had  :

4.8VDC from - of 1 to the - of 30
and I also had
4.6 VDC from the + of 1 to the + of 30
as usual
0.00 VDC from neg of 1 to pos of 30.
These readings are DC voltage across the array in 2 directions.

So, to my mind, they rightly add up to 7.1VAC.

====

I must have turned it or something maybe shorted or not sanded, because with the rest of the 26 turns I am getting no lights, well just a squeek of 2 sets of lights.

I may start over with one longer piece so I can finish what I couldn't before.

jeanna

[Mk1]

@ist

I would probably keep a type of iron core, Its easier to play with coils polarity, we will have to test if attraction or repulsion creates difference in the magnetic output from pickup coil.

[Pirate88179]

@ All:

Another video from Pirate Labs:  http://www.youtube.com/watch?v=EcJG_6YF1X4

This is just the 48" tube lighting of the Fuji AA circuit.  I am still learning about this camera.

@ Jesus:

Thanks.  I just played it again here on youtube and it was plenty loud on my end.  I don't know what could be wrong there.

@ ist:

Welcome back!!!

@ Jeanna:

You are hard at work and I am playing with videos.

Bill

[Mk1]

@ all

This is a circuit i use do see what is happening in the coils(test unit), without scope it will never replace it but helps understanding the coils.

The red dots are the probes , you need to connect those to coils , then reverse the connections, getting those data , will help making some sense of what is happening and coil polarities. 

The out goes to the multimeter , Have fun!

Mark