Joule Thief

[gadgetmall]

Wilby:

I was also thinking that.  Basically what I have been doing is going back and recreating all of my Fuji experiments only using the EB instead of the AA battery.  So.....the 200 leds, 300 and yes....400 are on my list.  I am probably going to hit the wall soon with these two 10 farad caps.  Once work picks up again, hopefully, I can get that 3,000 F cap and then....look out.  Thanks for watching it and also for the rating.

Bill

Bill Great Going . I figured a super cap would run all that stuff . Now i guess i need to make us a Flip Flopper to file from the dead cap to a Charged one . This only applies to the little suoer caps . the ULTRA cap will run them for days on end . I now have several Monster 650 farad caps that run jts for 4 days . I have also built a regulator to carry the 2.7 volts down to 1.6 to run fugi stuff. I am a little disapointed at my hazens replication because this would have been refined by me to the least amount of input but that ain't the problem . it just dont work with the amount of turns on the primary Jt . Now the LPJT has 100 turns primary center tapped and works on a lot of different toroids . I might hook this one up backwards and see what it does

@electricme . I love Australia !! your too cool man .
@ mark . Less? ok ill go 3 x3 and see !!


Gadget

[mikem_2au]

it's a bit late but i think I've got it write. if not,
let me know.

Fuji Transformer as i see it.. (looking down on to it)

[Pirate88179]

@ Gadget:

Thank you!

Wow man, 4 days is too cool!  I really want to get a 3,000 farad cap but, work has been a little slow lately (which is why I have time for these experiments) and it will be a while before I can afford one.  In the meantime, I might want to order one of your caps.  That is a good price you have on them.  I am only using 20 farads now so the jump to 650 F would be significant.

I feel like I am cheating a little by going back to the Fuji but since others on here have hand wound toroids that exceed the Fuji (not me)  I feel like I can eventually learn to do that and switch later on.

Don't give up on your Hazens replication just yet.  It is probably something simple that is wrong like Jim said.  I have no idea as I am not that far along yet.

Thanks again and keep us posted on your lighting project.

Bill

[xee2]

@ mikem_2au

@xee2, yes, the pickup is connected to the base.
( the end not the start of the winding)
i have sacrificed 2 Fuji transformers to find out what
went where, so i could try and replicate with a toroid.
I will try and post same pics of what i found soon.

mike..

Thanks for doing this. It is exactly what someone has needed to do but everyone was too lazy and my vision is not good enough to let me do it. Your diagrams are great.

[Mk1]

@gadget

Before undoing every thing try putting a bifillar coil in the basic jt way starting and ending at the same spot the pickup coil does .

Connect it to the jt circuit ( make sure to use a 2n2222 or 2n3409 so i could get a idea , resistor should be under 1k)if you cant get more then 30 volts then its a bad toroid.