AC from Joule Thief Secondary/pick-up

[jeanna]

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different combinations of polarity with the leds as...1st one one way, next one the other way...etc.  I don't really know.

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

I haven't been able to make that work in a straight line like that.
The way I have been able to reverse the polarities is to have a wire in the middle and to have the polarities 'go out' from that central wire.

That is what I had to do last week to get 2 leds to light at the filter
where today I have 3 very bright at that spot.

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. 

Yes, I thought of that when I let go of the secondary at the end of the dim lights. and they got brighter. so strange.

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I am wondering which of these inductors is making this happen.
I never changed the 1.82mH inductor after I got the 4 lights to turn on at the end.
It was the tanked one that I changed.
First, I increased the inductance then added the cap then increased the cap then increased the inductance even more.
With each additional increase in either cap or inductor, the lights behind= to the left of these components got brighter.

If the end lights got brighter, they did only a very little.

So, what is added at the right end is effecting what is to the left of it.

BTW there is NO change to the S2 lights at all.
To me, this means there is an excellent separation now from S1 to S2.
It might mean that what I am now doing is not effecting the xtree toroid at all.
The mA draw from the battery are  just a little less, which is perhaps from battery use.

It may be time to re-read Tesla's description of the hairpin lights

thank you,

jeanna

[IotaYodi]

Just a thought wave. These led diodes are subject to different voltage and current changes on a regular basis when you experiment with the same group of leds. From what Ive read their characteristics can change with too high or too low voltage or current/heat. If you add new leds to the group or independently they may behave differently as they haven't been under the gun yet.
If they are just PN I find it odd also that they light up. What could create a bypass and come around in the opposite direction? Maybe some type of external aerial induction.

[jeanna]

... These led diodes are subject to different voltage and current changes on a regular basis when you experiment with the same group of
...

If they are just PN I find it odd also that they light up.

As a matter of fact I changed some just to see, but it does seem to be the placement that is making the effect happen.

I think what you said is indeed relevant to the PN type or the PN part of the leds.
The superbrights are all made from blue leds then painted with phosphor paint which makes them mini fluorescent bulbs.


This is why I believe they can go both ways. BUT, they do not always go both ways, nor are they the same brightness both ways.
It is why I like to check from time to time.

I have had the regular leds choke the system out and I have also had them shine beautifully and have no effect on the other parts of the circuit.

What could create a bypass and come around in the opposite direction? Maybe some type of external aerial induction.

And, please remember I am running this circuit at above 100KHz.
The frequency is coming down as I add more leds etc, but it is still at 133khz at the moment.
I think it is the frequency that is making the lights light up, so it doesn't matter what direction too much.

I am not too sure what I am finding yet, but I do now have 3, maybe 4 sections of this circuit that produce different amounts of light and appear to be independent of the other parts.
They are not because with only a small change they all effect each other again.

To me that is a very curious and interesting thing.

[IotaYodi]

The superbrights are all made from blue leds then painted with phosphor paint.
I have had the regular leds choke the system out and I have also had them shine beautifully and have no effect on the other parts of the circuit.

I did not know that about the superbrights. If the superbrights are the only ones that do this,then the odds are that there is an interaction with the phosphor which is curious in itself. There is another question in my mind about breadboards. Seeing how the terminals are laid out, they may be acting like an antenna which may include unused terminals. What Im seeing is a magnetic field being induced into the terminal blocks. I guess you could do a Jt on a pcb and/or perfboard to see if it changes. A lot more work but it may tell you if the breadboard itself is interacting with the circuit other than the direct connections to it. If the breadboard is adding to the circuit the rabbit hole gets a little deeper.

[kooler]

hello,
i needed anwsers for my aircoil jt that give 2.05 volts dc but light 4-8 of those 265,000 mcd 100ma leds
so i really liked jeanna scope she had so i went and got me one like hers
http://www.tequipment.net/Velleman_hps10se.html
and you guys were right on the money ...
at 2.05 vdc it had spikes of 80vac at 5.31 khz
but i also have some of those 3'' tor-23 from alleletronics and they spike at 360vac (75vdc) and still don't light my led's of the 265,000 type
i just thought it was interesting.. but i am weird

oh jeanna don't fear the scope you got i was running 1600vac (458vdc) thru it for 10 min's no current of course

i love this little portable thingy