Joule Thief

[Mk1]

@ist

How are you stocking the kick back in a cap?.Unipolar charging? or put to work directly.

@all

Be creative in your winding its like art even knots may give interesting results have someone else do it you will never know.\
Like those bracelets made by little girls.

[rensseak]

Hi @all

today i built my first JT but not only with a toroid also with a ferrit rod (from a transistor radio). The result is the same as with the toroid.

just my 2 cents so that you have it easyer to wrap your coils. 

regards
Norbert

[innovation_station]

Hi @all

today i built my first JT but not only with a toroid also with a ferrit rod (from a transistor radio). The result is the same as with the toroid.

just my 2 cents so that you have it easyer to wrap your coils. 

regards
Norbert

that being said try a nail a screw lol how about air 

if you are lazy.........   lol


buy a relay ... 

i can teach you yet 1 more trick

lol

try to recover it in a  BIG CAP..... even bigger than it could posibly drain in 1 pulse.....

now tell me you dont get the mechinical work for free

never mind the extra electrical engery ... 

and well your at it tell me i didnt crack it 


ist! 

BTW  i dont got the CRACK POT AVITAR 4 nuttin 

[sparks]

Torroidal cores and ferrite cores can respond to highfrequency changes in voltage whereas laminated soft iron is for much slower transients.  Torroidal cores can also utilize eddy currents wheras laminated cores are insulated so as to discourage eddy currents.

[timmy1729]

@All

I was thinking(dangerous, I know) about how to improve our standard JT. Since we have a design that works(i.e. lights multiple LED's), I want to gather a list of what our more experienced posters think is wrong with the design and what would be the ideal to counter that flaw and how we might go about it. I know, you're probably saying "That's what this thread IS." Yeah, I know that, but after 77 pages and a camera circuit thrown into the mix, it's quite hard to keep it straight. But, creating a small summary like this every now and then, should help some of us that are organizationally challenged and don't have an extensive electrical background. The method where everyone blindly experiments when others have made improvements is recreating the wheel many times. Listing problems with the design and solutions that we have found should benefit everyone. This way we will not waste resources rediscovering improvements and can work on further improvements.

So, here is what I remember people saying so far(not necessarily from this thread):
1. The two-wire-at-a-time coil winding isn't the most efficient. What is the most energy efficient method and wire gauge? Is stranded or solid best?
2. Multiple ways energy is wasted. We could use a list of ways from the more experienced among us.I've heard complaints about the resistor, transistor, and other things.
3. Transistor selection. Apparently, some are more efficient for this purpose than others. Which are more efficient?


I am sooooo not trying to be bossy, pretentious, or anything. I'm just trying to help and this is one thing I think would help. I'm not trying to be communist about this either. So, I hope I'm not projecting the wrong idea.