Joule Thief

[resonanceman]

Really!?!

What is not happening?
The amps draw is higher with it as 2 tier. I think I posted it. Part of that extra is because the bjtl of the jt on the first level with the transistor is in its place. That always takes a big draw.

I suspect you have a file with the information I gave along with it?

In a general way, there is one circuit that involves the whole (second tier) thing - all 3/4 wires. The 2 secondary wires and the upper tier primary bifilar that goes around that toroid.

There is another circuit that involves just the base coil of the second tier and the pickup (secondary) of the first level

and a third that uses just the collector coil of the upper level and the  pickup (secondary) of the first level.

Of course, they all use all 3 circuits and the pulse from the one transistor etc.

But they give out different amounts of light and turning a led around can shut off all or just one of the others.

the bjtl on the first level with the transistor is effected by only one change in the upper level. I will need to review this to give you more info.

jeanna

Jeanna

Sorry

I was focusing on other things  when  you  came up  with the idea

Then  I switched to my LMs
The LMs are a bit  different ......  I am sure it is these  differences   that are the problem.
I do understand   how  your 2 tier works     
Maybe I coiuld get it  working if I was  trying single  LEDs ..........but I am  working  with  a LM that  is  about 200V  with no load .......  With my  LED array it is  usually  around  100 V  ......  The  tank circuit  sets a narrow  range  where the  LEDs  will light ..... IF I could   get  them  to light with no tank  I  think your  2 tier  might work .
I am  going to stay  with LMs because  I have  things I want to try that  would not  be practical with toroids

gary

[altrez]

Pretty funny, Bill. 

Of course that is possible. But without some kind of description, it is really hard.

So, now you have the base resistor in the right place.
It is attached to the base of the transistor and to one side of the coil. That side is what is called the base coil.

Do you have the twisted pair going into the pos battery rail?

The other wire from the bifilar goes to the emitter of the transistor and remember to jumper that to the neg side of the battery rail.

Is that what you have been doing?

jeanna

Yes I have the twisted ends plugged into the positive battery rail I have the other wire of the coil going to the collector and the negative battery rail going to the emitter? Is that wrong?

-Altrez

[Thaelin]

   Since we are off on a tangent so to speak about EB's. How many here remember the old 35mm projectors? They used carbon rods to make the arc. They are cased in copper clad but can be pealed off to expose the carbon. Very few in use today but you can still get them. You may get lucky and the place give you a real deal just to take the box.

thay

[WilbyInebriated]

Here is my container for my replication of Wilby's Light.  I just got it today but, it is full and I will have to work on emptying it.  This is the part of experimentation that most people don't see.  It is all of the hard work that goes on behind the scenes that never gets put into any video.  This will be my sacrifice to our JT topic.  When I get it done, and get it built, I will make a video.  I could not find a Coor's keg so it will not be an exact replication.  I hope it works anyway.

Bill

cheers to your behind the scenes hard work and dedication bill. i think you should make it part of a video
i am still looking for a o'doule's keg to swap for the coors... carefully change the 'd' to a 'j' for a o'joules light 
thanks for that idea jeanna!

[altrez]

@all

I wound a new toroid and its working well. I can light a neon now at full brightness! Here is a pic of my mini lab setup that I used this weekend.

Its back to work tomorrow but I feel with everyone's help on here and a very special thanks to jeanna! I have made some good progress!

-Altrez