Joule Thief

[jeanna]

OK I found it on page 10 or so of Pirates circuits page. THANK YOU again, Bill!!

MK1's instructions done on Jesus' computer before his motherboard went south!

jeanna
edit
I changed the coil numbers here to J and K as they correspond with the schematic.

MK1 please correct me if I did this wrong. I think it is right.

[nievesoliveras]

Ah yes,

Before we go any farther, please change the names of the coils on your basic schematic to JKLM. Or, JK instead of AB for now.

That will help us and everyone who follows, and it is easier to change it today. You may not be ready to add the extra coils and wires today which is fine, but when you are, there will be this ABCD confusion built right into everything. So, please please change the names!

And,
No, you cannot simplify it to the point where the coil just goes in one direction.
MK1 did a very good job describing how to draw this. I have saved his drawing in the original on my computer. I will upload it now, but REMEMBER all the numbers must be changed from 1234,1234 to 1234,5678. OK?

I think making a MK1 is the best way to simplify this. I will look for a drawing if this, although I think there is not such a clear one. You can supply it once you understand the MK2. But I may try also.

I am tired of taking measurements that prove to be meaningless, so I may just like it.

thank you,

jeanna

pic follows of MK2 instrux for making the MK2.

I Changed the letters to J and K respectively.  We are on the first step of understanding the whole thing.

Jesus

[Mk1]

@all

I just tested a blue coated toroid a bit smaller 1 inch and got barely nothing from the mk type design , Also really important
some transistor work better the wrong way around the base stay the base, and most will work well both ways the jt led light just the same in both direction and the difference is the voltage output on the pickup coil it really make a huge difference in voltage , when testing the voltage on pickup coil always use bridge and remove the led on the jt side!!!
So always test both ways !

Mark

[jeanna]

@Jesus,

Good, now the drawing of the instructions for making a MK1 and the schematic for a MK1 are labeled similarly

We are on our way! What a team!

jeanna

[Mk1]

@all
I just finish a mk3 toroid .
I started testing some data,  first one coil alone 43 volts dc(bridge used), 2 coil in series one from each side 67 volts dc (bridge used).

The drawing is the winner on my toroid , but i did get other results ranging from 6 volt dc to 40 to 33 to 67 dc.

I consider the start being the one under and the end the last turn back down.

I hope this part could work for everyone.

Mark Now more testing on the bridge!