AC from Joule Thief Secondary/pick-up

[stprue]

@Jeanna

Great work!  This is very interesting.  I think you should try to capture the extra voltage being produced by the spikes BEMF that feed to the inductors with a cap or a series of caps!

Good job 

[jeanna]

Thank you, Bill and Stprue.

Stprue,
I have been going at that issue in a different way.
I have been trying to capture what I can with leds instead of into a battery.
I want to use this live, so to speak.
I think batteries are OK, but they are dead in the water.
They only put out
dc then they need to be recharged.
Yes, Bedini is doing something more live, but I just have to try this.

Now,
I am at that very interesting and odd place I was when I started this whole thing with the 2 tiered circuit.

I made a transformer out of that filter... well, actually I made a new one.
I turned enough winds to give me the same inductance then wound a secondary with many more turns on it. but, instead of the transformer action I was looking for, the voltage went down. 
Imagine that.
There were many more turns but the voltage was lower.

I then decided to make an inductor/ignition coil type thing because that is the kind of thing that was turning the lights on in that 2 tiered circuit.

So, I made a bifilar like a joule thief primary and wound that over the secondary,
And then,
I attached one free arm of the RED secondary to the twisted pair.

This left me with 3 free arms.
1 free arm from the secondary. This is RED and
2 free arms from the bifilar; a BLACK one and a WHITE one.

I looked at this with the scope. There was a very sinusoidal wave of about 7.7volts, but at first I could only light one light.
Realizing that it was a true ac this meant I only had 3.35v on each side, so I split it.

I put 1 led on the black bifilar wire and
1 led on the free arm of the secondary,
then in between them I connected both to the white free wire of the bifilar.
Both leds went on.

And the other important part is that the remaining lights stayed the same brightness. This was NOT taking any volts or spikes or light from them.

These 2 lights are a little uneven.
I am glad to see this because I purposely made the bifilar uneven, and I believe this is showing this.
I suspect I can make this bifilar with many turns.
It is not turning the switch of transistor, so, I am just looking to make a more powerful ignition coil that uses the pulses from that distant switch.

BTW I did not lose any frequency this time. It stayed around 117KHz by eye. In fact I did not actually measure it.

I will be away for a few days. If I can do some more tonight I will, otherwize it has to wait til monday.

So... if there are any questions, please ask them tonight.

thank you,

jeanna

Here is a pic. It may or may not help! 

[jeanna]

@All,
I actually have managed to add a 4th light to the place I spoke about earlier today next door.
It is beyond the S1 circuit but maybe not completely across the S1 wires as a transformer. It is definitely beyond where I have been working so far.

Now, there was another obvious place to add lights which is where I did last week with some success, but this is really cool or strange, maybe both.

On the set of 4 from today I have been trying to make them brighter by adding higher value inductors and higher value caps.
I am up to 700uH tanked with a 1uFcap.
This is in series with the 4 lights.

I tried adding a couple of lights on the 'other' side of the filter for a plain transformer effect.
Now, this only worked marginally last week.
One light was fine 2 were fine also, but I had to rig up an exotic arrangement of wires and also I had to put the lights in opposite directions.
I am only mentioning this because it was OK but weak and it looked like the last amount I would be able to stretch this circuit to go.

The bottom of the pic on the previous post shows the 2 lights as they were last week.

Well, as I have added uH to the new place which is beyond the main part of this S1 circuit, the lights at the filter are all getting brighter. I now have 3 and they are again brighter than any others so, it is time to add one more! These lights are all going in one direction and it has a 'normal' look for a transformer.

I will draw a pic, but it might be as confusing as all these words.

I will post it tomorrow (or when it is done).
And, I am beyond the scope of the scope, too.
I cannot get a reading without putting out the lights.
So, if the lights go out, I do not know what the reading is about.
Is the scope taking from or adding to the amounts?

I am having fun, are you?

,

jeanna

OK I took a pic or 2
On the far right you can see the 4 new lights. (3 are bright, remember, and 4 was today's extra challenge.)
In the lower section held together with clips are 3 lights on the 'other' side of the filter as in last weeks pic seen above, but...
this time they are just in line with the same polarity.

also one in the dark.

[jeanna]

Hi everybody,

I just tried another thing and found another puzzle.

Whenever I remove the battery and the circuit is on 'drain' from the supercap, the 4 last lights first get brighter and then slowly dim to out. Ultimately, they outlast the rest.
I wondered if there was a polarity thing going on.

MMM I think so, but I am not sure
Here is what happened.

After I turned the 4 leds around, they went on very bright and
ALL of the rest of the leds that are coming from S1 became as dim as the 4 were.
Then I pulled the battery out and the drain time on these 4 now bright leds was about a minute (instead of 3 or 4 seconds).
All the rest of the leds on S1 and also S2 went out in the usual 3-4 seconds.

So there IS a lot going on here... I wonder what it is? 

jeanna

[Pirate88179]

Jeanna:

I think you are correct about the polarity issue.  It may well be that it is better to have different combinations of polarity with the leds as...1st one one way, next one the other way...etc.  I don't really know.

This reminds me of my experiments where when my leds went out, I touched the transistor and they all lit back up again very brightly.  The transistor (2N3904) as you know has a plastic case so, I never figured out why this happened.

My suggestion is to try this set-up you have using different polarities and see what happens.

All of this is great information to have and, as you said, adds to the puzzle.

Bill