AC from Joule Thief Secondary/pick-up

[jeanna]

Hi All,

I do not have a finished report. My computer got too hot last night and I just shut it down. I won't put up the drawings that caused the problem yet, because I have not finished making the complete set, but I would like to share a couple of things I noticed.

1- The S1 and S2 will take turns lighting up their loads unless I have an inductor on the S1 load.
This makes this more complicated than I thought it was.

2- The S1 and S2 are two secondary wires wound on the same toroid. S2 must be connected to S1 in order to work at all.

This could mean they are really one complicated secondary with one connection.
But this may be a connection that acts like a "ground" to the circuit, instead of a direct link to each other. I may want to re-draw the drawing again to keep this possibility open.

My reason for saying this is:
These 2 circuit paths seem to work independently, but they must be connected to each other; but, only connected by 1 wire.

--
I have a couple of 'known value' inductors and they work very well and light up more than 2 leds on the S2 circuit. The better one has more turns thinner wire and is 220uH where the one that works less well has fewer turns thicker wire and is 22uH
It may be a resonance thing not an amount thing because there is a clear ring on the scope with the 220uH choke.

I only need to add the drawing of these. When they are finished I will show all drawings and research. (But that might be tomorrow.)

jeanna

[jeanna]

Here are the pics.
1-First just Berry as inductor using just its secondary pickup to connect L1 with L2.
2-Just zebraK as inductor, just its secondary again, but I am using zebraK because this has the same number of turns as the Xtree primary bjt...just to see.

Since these are stronger today, I used 2 leds in series and tested each inductor with 1 and 2 leds. The inductor is the same one in both sides of the drawing. I am just "saving paper".

3- 18T on a tor-23 core (like the other cores) - light is bright.
4- 220uH inductor THIS ONE RINGS
5- 22uH inductor Cannot support the second light.

[jeanna]

Hi everybody,


Today, I had the thought that the Line called L2 is really a 'ground' and not comparable to any part of a dc circuit.
For instance, when all the connections are made to the L1,  I can let things hang in the air or connect them to L2 either way.
Sometimes something like a meter on one wire connected to L2 will affect the others on the other S, but usually not.

This is a mental breakthrough for me.

I may redraw the circuit, but I may not. It will be good to realize for now that L2 is possibly the ground and the S1 connections are made to L1 and the S2 connections are made to L3, but any connections to L2 can be to the earth or wall or the air.

They are all getting the pulse from the transistor through their magnetic connection to the Xtree toroid.

Today I looked at the 7T S2 and added inductors and capacitors to find a tank, then...

I decided 7Turns was too few and cannot tell much.
So, I removed the 7T S2 and remade it with 21 turns.
It was all I could fit.

So now, this new S2 with 21T,  turned on 4 leds in series and had no effect on the leds in S1 circuit.
The amps draw seems to be the same too.
It seems not to be changed by how many leds on S1 or S2 but only by the resistor at the battery.
The voltage at the base of the transistor is about .59v with the battery resistor at 33r but .725v with no battery resistor. All that seems regular.

As I am saying this, I want to repeat that the
Xtree primary bifilar is 11T,11T
Battery is 1.35vAAA
2N3904 tuned with
246r base resistor
S1 =  74T 104v no load, no battery resistor
S2 =  21T   25v no load, no battery resistor

So here is an almost blank new picture. It will be the beginning place for any new test I will describe. (until I change it again! )

thank you ,

jeanna

[jeanna]

I have some plain data today.
I watched some youtube links that wilby sent me, thanks wilby! and it got me trying to make a tank in each connection.

So far, I have not seen any reaction except putting out the lights from the caps so I am first  zeroing in on the inductor part.

I used a couple of bought inductors and a few wound secondaries from the tor-23.

Of course, if you have been following this, you have seen some of this.

But here is just some straight data. If it works without constructing a table I will be done. Here it is:
BJT
xtree
2N3904
246r base resistor
2 secondaries
74T 18leds 30 awg RS mag
21T 4 leds  26awg mag


using 33r batt resistor for protection

please see table below

jeanna

[jeanna]

What I am finding sooo cool about this is that these 2 circuits are quite independent of each other.

They can have different color leds on them and do not effect each other.

I am thinking I will make something out of it for right now.

I will make a 45 bright white led array out of the hi voltage one.

Then I will make one  with 2 or 3 yellow/orange leds for warmth of color.

I will make the leds go out and around in a spiral facing out. Then I will put it all into that very big globe diffuser.
In there, it should be so bright I will not need another light in the room. 

jeanna