Joule Thief

[Mk1]

@pirate

On the test i just performed , a germanium gave me 40 volt compared to 35 volts. For voltage germanium is the way to go. But for emf we will need something that can handle high voltage spikes , schottky nte585 diodes may work better.

[jeanna]

MK1,

I am wondering why your design has 2 sides to it, each one being a bifilar with a secondary.

What is the advantage of splitting  into 2 groups when the single produces a big effect.

Maybe this question only comes up for me because I have not explored the limits of the single toroid jt yet.


Do you think I should make one half of this in the reverse of what it is? Have you any idea what happened to make the secondary drop so drastically in power?

This toroid has a lot of space in the center. I will be able to get many more turns.

Did you say you have got one that pulls lots of amps as well as volts?

Thank you,

(I need some sleep. I will wait a bit for an answer, then tuck in.)

jeanna

[Mk1]

@jeanna

There is a lot of thing i cant see,but don't confuse your self coils are coils , be concern of the direction only when connecting.

There are no bifilar in this design.One jt wire (7turns)on one side the other on the other side taking as little space as possible.
Leaving all the space for the 26 turn coil.

The reason why this is more effective is that it creates a bigger field from one side to the other. The regular joule thief creates only a field between the bifilar wire.

Plus you get more space for the pickup coil.Do only single wire coil for the 26 turns.

Also look at the picture .
It may be easier to put 2 tierap at 180 from each other ,and stat from there make the big coils first, you go from the bottom tierap winding all the way to the top and back down . same thing on the other side.

Then remove the tierap and make 7 turn coil single wire in the hole left by the tierap.

That should do it!

[Pirate88179]

@ all:

Here is yet another youtube video I made tonight.  http://www.youtube.com/watch?v=cqESU5w39xY&feature=channel

In this one, I am using the Fuji AA JT circuit to illuminate 100 leds.  Still nothing really astounding but, I am getting there.

@MK1:

Thanks for your reply.

Bill

[Freezer]

@ all:

Here is yet another youtube video I made tonight.  http://www.youtube.com/watch?v=cqESU5w39xY&feature=channel

In this one, I am using the Fuji AA JT circuit to illuminate 100 leds.  Still nothing really astounding but, I am getting there.

@MK1:

Thanks for your reply.

Bill

Good video Bill.  Perhaps you could build a circuit to automatically charge the AA from a solar panel during the day, while powering a light during the night.

I made a video powering a small dc computer fan.  I'm using a 400v 4amp rectifier, with a tip 3055, using a resistance of 24ohms.

http://www.youtube.com/watch?v=dChpI5lvvMw&feature=channel_page