Joule Thief

[jeanna]

Mark,
Please explain how you hook up your special coil?
I understand the coil itself has 3 wires, so unless they are connected in series or parallel, that makes 6 wire ends.
Then there is a secondary, which has 2 ends.

It is not clear to me at all how you are connecting the jt with this coil OR even if you are using the secondary.

Please explain.

[Later I will ask how to make one, because I do not have that big round of toilet paper. but for now, I want to conceptualize it. Also, I do have poster paper and could make my own tube.]

Thank you

Actually if it is like post 1185 where you show the 24 leds in parallel it looks like the special coil is added to the toroid like a secondary in series with the secondary of the toroid .
This is exactly how my cone pancake is added and it is amazing.
So, if this is the same idea please say so.

jeanna

[Mk1]

Mark,
Please explain how you hook up your special coil?
I understand the coil itself has 3 wires, so unless they are connected in series or parallel, that makes 6 wire ends.
Then there is a secondary, which has 2 ends.

It is not clear to me at all how you are connecting the jt with this coil OR even if you are using the secondary.

Please explain.

[Later I will ask how to make one, because I do not have that big round of toilet paper. but for now, I want to conceptualize it. Also, I do have poster paper and could make my own tube.]

Thank you

Actually if it is like post 1185 where you show the 24 leds in parallel it looks like the special coil is added to the toroid like a secondary in series with the secondary of the toroid .
This is exactly how my cone pancake is added and it is amazing.
So, if this is the same idea please say so.

jeanna

Good point Jeanna .

Ok first off this coil is supposed to be pulsed at around 30 v low amp , square wave , at low freq in the audio range more or less 1khz.
I deal condition should cause direct dc from the secondary , no diodes .

The design starts with one coil , the other two are fired in sequence 1-2-3
to cause rotation , 36 turn per coil but 3 turns per revolution .

Those are about the basic specs.

Now i mention to them about the jt for switching it , they most have laugh this one out , evidently they ignored me.

So i had to do it and learn about this new interesting coil , i have made many jt learned from it , so i made one , two, tree , they are all posted .

So to have a jt i needed pairs of coil , so i made 2 primary coil 18 turns spaced at 10 each at 45% degree angle , it worked good for a jt , connected the 2 coil the way a jt should .

They came time for adding secondary to the outside , i used the biggest gauge i could find , i need to try bigger.

Yesterday i put 2 more primary , at 5% mark between the 10% coil already there , so 4 coil of 18 turns , now running on 2 coil in series on the collector and base .

I could make more picture.

Ho btw i tuned the base and got the bulb even brighter , my sister confirmation to light is really brighter on the secondary then direct on the battery ..

I got more roll, janitor from high schools could be of help there .

diameter 87 mm by 95 mm
   

Edit , the toroid in the middle is not part of the circuit at all , my work bench is messy the only thing to note from that is the fact that i have 24 led on the secondary even if there is a red led in the basic jt .

I use to toroid at all.

[xee2]

@ Mk1

How many turns used for secondary?

[Mk1]

@ Mk1

How many turns used for secondary?

I had 22 1/2 copper , and 18 aluminum bifilar style , i can run the light connected to one end of each coil , no connected in the middle .

[resonanceman]

Mark,
Please explain how you hook up your special coil?
I understand the coil itself has 3 wires, so unless they are connected in series or parallel, that makes 6 wire ends.
Then there is a secondary, which has 2 ends.

It is not clear to me at all how you are connecting the jt with this coil OR even if you are using the secondary.

Please explain.

[Later I will ask how to make one, because I do not have that big round of toilet paper. but for now, I want to conceptualize it. Also, I do have poster paper and could make my own tube.]

Thank you

Actually if it is like post 1185 where you show the 24 leds in parallel it looks like the special coil is added to the toroid like a secondary in series with the secondary of the toroid .
This is exactly how my cone pancake is added and it is amazing.
So, if this is the same idea please say so.

jeanna

I would like to know more too.......

Looks like a really interesting  coil.

I  do not  plan on  using a cardboard tube.......... I was thinkjing more like a piece of plastic pipe ........or a connector made for gluing  2 sections of plastic pipe together

Plastic pipe is  available in MANY sizes.......Maybe this  kind of  coil will scale up  easily

gary