Joule Thief

[xee2]

@ MK1

I wonder what would happen if all 4 legs of the tube where connected , maybe 2 pickup coil ?

The two pins or shorted together inside the tube so it does not matter which one is used to supply the voltage.

[jeanna]

Ok so it's like an inside core diameter crossover and then on the outside you thread under loops previously made?  I do get the described look with one crossover in the front.  Is this right?

Sorry for all the large pics I just want to make sure I'm doing this right

Sorry for the time. I made 2 pics with the xolaptop then photoshoped em with captions.

The first one shows 2 crosses inside and the beginning of the next one coming out. But it is on the other side so I turned around to the camera and

the second shows making the change to the next slot while still underneath and before coming back out.

It is like what you show and the switch to the next slot happens before you make the turn to go back out.
jeanna

[jeanna]

@jeanna

The only thing that can vibrate a core is it own resonant freq , if its not right is will not vibrate even at very high hz , but with those freq other core could start to look interesting .

I don't understand. but maybe I will later.

Also when you test the coils with a led , is this with the led connected to bridge output of just to the pickup coil . It make a big difference .

There is no bridge here at all.

I am using the scope for voltage peak to peak and frequency measurements.
I am using the dmm with a 10 ohm resistor in series with the probe for mAmps measurements.

There are 2 different places where I put the LED for the test.
I put it at the ends of the pickup. (so there is no frequency or voltage test here.
I also have it in the Basic Joule Thief Spot.BJTS. And, when it is there, I can check all 3 voltage, frequency and mAmps with the led in that spot.

It makes a difference; and that is why I am testing it there. I want to see and share the difference that it makes.

With the LED running off the pickup there is a bright light and the amps draw changes with the various caps.

I guess it is clear the the base coil is under the influence of the collector coil , i started to have issues with that an i am looking for solutions .

Yes, and tonight I will be switching the 4T and 3T around to see the difference this makes because this is the very issue here.

thank you,

jeanna

[jeanna]

Ok so it's like an inside core diameter crossover and then on the outside you thread under loops previously made?     

I think I got it!!

I think what you are doing is you are trying to make the wire switch slots on both sides.
That sounds dumb. I am sorry this is very hard to describe.

Now, Here is what I do.
After the wire has crossed inside and it is in a slot between 2 wires keep it there until you get to OVER the top.
thread it through inside and let it cross there.
at the bottom, turn it back up and stop and look at it . Holding everything really tight except for the end of the wire, push against the wire as though you were going to push it back out again. You will see where the last 'slot' was, because it tries to move.
Now that you know where the last one was, you can skip one wire and go into the next slot and up and around...

Maybe this try will help.
I will try again if it still isn't clear.

jeanna

[stprue]

YES I think I got it.  It is late fro me but when I get a chance I will post through Pics' how to wind an Mk1 style coil (I think). 

Thank you Jeanna for your patience with my non-stop questions that have probably been answered in the past 500+ pages. 

I have been looking at this site for a few years now but only just starting to get into the meat and potato's of building.