Joule Thief

[Mk1]

@pirate

thanks again


@all

The mk8 is look like a xmas ornament , looks good on my green Gem toroid , copper red mag wire 216 turns on each side hum , only took 25 min to do hum , say what , yep , how you say , real simple , i like simple things less is more , i always try to get it so anyone could do it !
Since i don't have much faith on the selling power , of america , yes small a , like small e .

Mark

[Goat]

@ Mk1

All the newer and better proven circuits and suggestions should be added at the beginning of Bill's new thread in order to keep everyone up to date.

Edit: MK1 you had a good suggestion of putting the link to the thread and location of the original circuits. Good one!

Regards,
Paul

[Goat]

@ All

One thing I have a problem with in the JT thread is the components used in the circuits.  Could I ask everyone to post as much information as possible on the toroid used in the circuit, there's just too many discrepancies among toroid material and size out there.

Regards,
Paul

[Pirate88179]

@ Paul:

Mark made a very good point.  If I put all of the "new" stuff at the beginning of the topic and then, a few weeks later there is newer "new" stuff...I can't go back and add that in first.  I think I have to do this in the order we originally did it to be consistent with future advances and entries.  As for the page ref.  I can do that but it will take me a lot longer.  Probably be good to have though.

I think folks have been pretty good about the details of components....when they have any.  Some of the problem might be that, like me, a lot of folks salvage components from other circuit boards, devices, etc. and this information is not available. I have many components from cfls for example, that have no markings on the capacitors, or transistors or the diodes.  None at all.  This makes it hard to replicate and kind of blows the scientific approach for sure.  But, I agree with you, whenever possible, folks should label and document everything they use.

Bill

[timmy1729]

Just wanted to let everyone know I'm still alive 

When they started producing this new product here at work, I had to take over some additional duties. They actually want me to work! Can you believe that? 




So, I've gotten uber-behind on the thread. I did manage to play with Stevesrd's pulse motor(from Youtube). I've gotten some WICKED power using two AA batteries in series, using a tiny DC motor(don't know the minimum voltage), and a transformer from an OLD calculator. Just the BEMF from this lights two high-brightness LED's and two regular LED's all in series! And, when the motor is running, DO NOT TOUCH THE BEMF alligator clips! It's a shocking experience! 
I think General Jim would say it was "biting the pinkies."

I will need to go back and re-meter this thing, but the BEMF I measured when the motor is running from two AA's seems wrong. I hooked the meter up correctly, but I was getting things like 20Amps AC and a few hundred volts from the BEMF in little bursts. I have a DC motor that runs on a minimum of 6v DC. If I can ever get the damn thing open, I will turn it into a pulse motor and see what I can get from it. Maybe, I can use a JT to get it to run on less and see what BEMF I can get from that. Unfortunately I don't know how much of a step-up the transformer is. The mains plug ran into the big side and stepped down so I turned it around. I'll see if I can post a video of it this week. Seeing those LED's running like that from 3v dc, a pulse motor, and a transformer is just COOL 

I'll try to catch up on the thread this weekend.